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  • 1.
    Ahlberg, Ernst
    et al.
    Predictive Compound ADME & Safety, Drug Safety & Metabolism, AstraZeneca IMED Biotech Unit, Mölndal, Sweden.
    Winiwarter, Susanne
    Predictive Compound ADME & Safety, Drug Safety & Metabolism, AstraZeneca IMED Biotech Unit, Mölndal, Sweden.
    Boström, Henrik
    Department of Computer and Systems Sciences, Stockholm University, Sweden.
    Linusson, Henrik
    Department of Information Technology, University of Borås, Sweden.
    Löfström, Tuve
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics. Department of Information Technology, University of Borås, Sweden.
    Norinder, Ulf
    Swetox, Karolinska Institutet, Unit of Toxicology Sciences, Sweden.
    Johansson, Ulf
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics. Department of Information Technology, University of Borås, Sweden.
    Engkvist, Ola
    External Sciences, Discovery Sciences, AstraZeneca IMED Biotech Unit, Mölndal, Sweden.
    Hammar, Oscar
    Quantitative Biology, Discovery Sciences, AstraZeneca IMED Biotech Unit, Mölndal, Sweden.
    Bendtsen, Claus
    Quantitative Biology, Discovery Sciences, AstraZeneca IMED Biotech Unit, Cambridge, UK.
    Carlsson, Lars
    Quantitative Biology, Discovery Sciences, AstraZeneca IMED Biotech Unit, Mölndal, Sweden.
    Using conformal prediction to prioritize compound synthesis in drug discovery2017In: Proceedings of Machine Learning Research: Volume 60: Conformal and Probabilistic Prediction and Applications, 13-16 June 2017, Stockholm, Sweden / [ed] Alex Gammerman, Vladimir Vovk, Zhiyuan Luo, and Harris Papadopoulos, Machine Learning Research , 2017, p. 174-184Conference paper (Refereed)
    Abstract [en]

    The choice of how much money and resources to spend to understand certain problems is of high interest in many areas. This work illustrates how computational models can be more tightly coupled with experiments to generate decision data at lower cost without reducing the quality of the decision. Several different strategies are explored to illustrate the trade off between lowering costs and quality in decisions.

    AUC is used as a performance metric and the number of objects that can be learnt from is constrained. Some of the strategies described reach AUC values over 0.9 and outperforms strategies that are more random. The strategies that use conformal predictor p-values show varying results, although some are top performing.

    The application studied is taken from the drug discovery process. In the early stages of this process compounds, that potentially could become marketed drugs, are being routinely tested in experimental assays to understand the distribution and interactions in humans.

  • 2.
    Aidemark, Jan
    et al.
    Linnaeus University.
    Askenäs, Linda
    Linnaeus University.
    Nygårdh, Annette
    Jönköping University, School of Health and Welfare, HHJ, Dep. of Nursing Science. Jönköping University, School of Health and Welfare, The Jönköping Academy for Improvement of Health and Welfare.
    Strömberg, Anna
    Linköping University.
    User involvement in the co-design of self-care support systems for heart failure patients2015In: Procedia Computer Science, ISSN 1877-0509, E-ISSN 1877-0509, Vol. 64, p. 118-124Article in journal (Refereed)
    Abstract [en]

    In this paper the nature of user involvement in a co-design process will be explored. The outlines of a research project aiming at developing support systems for self-care inpatients suffering from chronic heart failure will be presented. The project is planned to perform a co-design effort where users (patients and healthcare professionals) will be given the opportunity to influence the development of support systems. We will discuss a number of possibilities and challenges that lie in the design of this kind of project and also some findings from its early stages. This report presents the experiences of users’ input, which are discussed in the context of previous research on benefits of user contributions in systems development.

  • 3.
    Ajegunma, Solomon
    et al.
    Jönköping University, Jönköping International Business School, JIBS, Business Informatics.
    Onoberhie, Kennedy
    Jönköping University, Jönköping International Business School, JIBS, Business Informatics.
    Pasupathy, Ramadevi
    Jönköping University, Jönköping International Business School, JIBS, Business Informatics.
    Exploring the Integration of Enterprise Systems Solutions Within A Supply Chian2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Over the decades, as organizations begin to move globally there has been a sporadic flow of information in their supply chain. Competition today is forcing companies to integrate tightly with their suppliers and customers, in order to reduce the time available to flex the supply chain (SC) (Koh S.C, Saad S, Arunachalam S, 2006). The integration of firms and departments and information is getting more and more complicated. Regardless of enterprise system solutions being introduced as “integrated suites” they have failed to accomplish application and supply chain integration (Themistocleous, M. Irani, Z. O‟Keefe, and R. 2001). Therefore, this thesis aims to explore, gain better understanding and to explain the balance that may occur between the challenges and benefits gained from integrating enterprise resource planning and supply chain management.Our topic of interest could be view from both developers and user perspective. Developer/consultant‟s perspective is based on the viewpoint of those involved in and responsible for developing enterprise solutions. User‟s perspective, this perspective gives insight to how the integration process is perceived by organisations actually using the solutions. We chose the User perspective because we consider the user to be the direct beneficiary of whatever outcome is gotten from both the business solutions and its integration.In order to achieve a purposeful thesis. We decided to use an interpretive perspective which focus on exploring and gaining insight into issues of integrating enterprise system solution. We used both the inductive and the deductive approaches in our research. This would be advantageous due to the nature of our research topic, as there is little existing knowledge about the integration of enterprise systems solution within supply chain and there are lots of literatures related to the enterprise system solutions (ERP and SCM) been observed. The inductive approach would guide us to choose one or a few specific interactions to explore in-depth, while the deductive approach would aid us when making an hypothesis, since we would be collecting ideas about previous research and theories in order to guide us and make comparison.Conclusively, we found that the balance between challenges and benefits of ERP and SCM are unequivocal, as the benefits surpass the challenges and the effect of challenges on organisation‟s benefit is that it prolongs the short term benefit.

  • 4.
    Albertsen, Thomas
    et al.
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Sandkuhl, Kurt
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Tarasov, Vladimir
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Towards Competence Modeling and Competence Matching for Network-Based Defense2008In: Stockholm contributions in Military-Technology 2007 / [ed] M. Norsell, Stockholm: Swedish National Defence College , 2008, p. 9-22Chapter in book (Other academic)
  • 5.
    Al-Ghareeb, Meelad
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics.
    Vibration exposure model for human operators working with chainsaw equipment.2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
  • 6.
    Alirezaie, Marjan
    et al.
    Örebro University.
    Hammar, Karl
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics.
    Blomqvist, Eva
    SICS - East Swedish ICT.
    SmartEnv as a Network of Ontology Patterns2018In: Semantic Web, ISSN 1570-0844, E-ISSN 2210-4968, Vol. 9, no 6Article in journal (Refereed)
    Abstract [en]

    In this article we outline the details of an ontology, called SmartEnv, proposed as a representational model to assist the development process of smart (i.e., sensorized) environments. The SmartEnv ontology is described in terms of its modules representing different aspects including physical and conceptual aspects of a smart environment. We propose the use of the Ontology Design Pattern (ODP) paradigm in order to modularize our proposed solution, while at the same time avoiding strong dependencies between the modules in order to manage the representational complexity of the ontology. The ODP paradigm and related methodologies enable incremental construction of ontologies by first creating and then linking small modules. Most modules (patterns) of the SmartEnv ontology are inspired by, and aligned with, the Semantic Sensor Network (SSN) ontology, however with extra interlinks to provide further precision and cover more representational aspects. The result is a network of 8 ontology patterns together forming a generic representation for a smart environment. The patterns have been submitted to the ODP portal and are available on-line at stable URIs.

  • 7.
    Allahyari, Hiva
    et al.
    Blekinge Institute of Technology, Karlskrona, Sweden.
    Lavesson, Niklas
    Blekinge Institute of Technology, Karlskrona, Sweden.
    User-oriented Assessment of Classification Model Understandability2011Conference paper (Refereed)
    Abstract [en]

    This paper reviews methods for evaluating and analyzing the understandability of classification models in the context of data mining. The motivation for this study is the fact that the majority of previous work has focused on increasing the accuracy of models, ignoring user-oriented properties such as comprehensibility and understandability. Approaches for analyzing the understandability of data mining models have been discussed on two different levels: one is regarding the type of the models’ presentation and the other is considering the structure of the models. In this study, we present a summary of existing assumptions regarding both approaches followed by an empirical work to examine the understandability from the user’s point of view through a survey. The results indicate that decision tree models are more understandable than rule-based models. Using the survey results regarding understandability of a number of models in conjunction with quantitative measurements of the complexity of the models, we are able to establish correlation between complexity and understandability of the models.

  • 8.
    Ambrose, William
    et al.
    Jönköping University, Jönköping International Business School, JIBS, Business Informatics.
    Athley, Samuel
    Jönköping University, Jönköping International Business School, JIBS, Business Informatics.
    Dagland, Niclas
    Jönköping University, Jönköping International Business School, JIBS, Business Informatics.
    Cloud Computing: Security Risks, SLA, and Trust2010Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    With Cloud Computing becoming a popular term on the Information Technology (IT) market, security and accountability has become important issues to highlight. In our research we review these concepts by focusing on security risks with Cloud Computing and the associated services; Software, Platform and Infrastructure (SPI) and connecting them with a social study of trust.

    The method that was conducted during our research was reviewing secondary literature, interviewing different experts regarding Cloud Computing and relating standards already established by ENISA, NIST, and CSA to the interviews.

    The result of this study shows connections between the specific SPIs, both how they compare, but also how they differ. In the end we were also able to rank the top security risks from interviews with experts and see which SPI could be the most insecure one and  what countermeasures could be applied.

    This was further related to trust and Service Level Agreement (SLA) in Cloud Computing to show how the security risks we discuss are related to these two specific areas. By highlighting this we wanted to present useable information for both clients and providers in how to create a better Cloud Computing environment.

  • 9.
    Andersson, Martin
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Strand, Niklas
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Virtualisering för en effektivare laborationsmiljö2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    IT-companies today need to experiment with the technology they deliver to their customers. A laboratory environment with little or no planning behind it can have a quite low efficiency. The term “efficiency” is used, in this work, as a measure-ment of how much time it takes to complete a certain work-task. However, effi-ciency also means reducing the useage of resources. Increased efficiency means that less time is used to complete one or more tasks. Today, IT-companies nor-mally utilize a fraction of their total server capacity. To utilize the servers more efficiently, and be more economic, virtualization is a good solution. TDC, who delivers communication solutions, has a laboratory environment at their office in Växjö. The work includes, among other things, time-consuming reinstallation of servers. Another problem is that people currently often need to be in the envi-ronment, physically. This limits the use of the environment because people in oth-er offices have no chance of using it. The purpose of this work is to develop guidelines as to build efficient laboratory environments for servers and network-units, and to reduce the need of physical access to the laboratory equipment.

    During the work a workshop was conducted, regular telephone reconciliations were held, experiments were done and a literature research was made. The exper-iments dealt with virtualization and external storage. The goal has been to develop guidelines on how to build efficient laboratory environments. Through the litera-ture research, in multiple databases, sources were found that support the theory and the results.

    The guidelines developed show how to reduce the need of physical presence by allowing remote access and having a well-planned network structure. By configur-ing the remote access properly the equipment can be accessed even if some parts of the network structure are not fully functional. Servers can be accessed via a special expansion card as long as they have power and network access. This way, you can start and stop the server and even reinstall its operatingsystem, all of it remotely. It is essential in a laboratory environment to be able to restore the con-figuration of a device to a initial state, or known working state. For networking units this is accomplished by storing (and getting) configurations from a central server. Virtualization is a good option when it comes to restoring servers, because it is easy to save snapshots of virtual machines. The whole environment and its routines should be well documented.

  • 10.
    Argyrou, Argyris
    Hanken School of Economics, Helsinki, Finland.
    Auditing journal entries using extreme value theory2013In: ECIS 2013 - Proceedings of the 21st European Conference on Information Systems, Association for Information Systems, 2013Conference paper (Refereed)
    Abstract [en]

    While a wealth of statutory and auditing pronouncements attest to the importance of the auditing of journal entries for preventing and detecting material misstatements to financial statements, existing literature has so far paid inadequate attention to this line of research. To explore this line of research further, this paper proposes a bipartite model that is based on extreme value theory and Bayesian analysis of Poisson distributions. The paper assesses the veracity of the model via a series of experiments on a dataset that contains the journal entries of an international shipping company for fiscal years 2006 and 2007. Empirical results suggest the model can detect journal entries that have a low probability of occurring and a monetary amount large enough to cause financial statements to be materially misstated. Further investigations reveal that the model can assist auditors to form expectations about the journal entries thus detected as well as update their expectations based on new data. The findings indicate that the model can be applied for the auditing of journal entries, and thus supplement existing procedures.

  • 11.
    Backofen, Rolf
    et al.
    Friedrich-Schiller-Universität Jena, Germany.
    Badea, Liviu
    National Institute for Research and Development in Informatics, Bucharest, Romania.
    Barahona, Pedro
    Universidade Nova de Lisboa, Portugal.
    Berndtsson, Mikael
    University of Skövde, Sweden.
    Burger, Albert
    Heriot-Watt University/MRC Human GeneticsUnit, Edinburgh, UK.
    Dawelbait, Gihan
    Technische Universität Dresden, Germany.
    Doms, Andreas
    Technische Universität Dresden, Germany.
    Fages, Francois
    INRIA Rocquencourt, Paris, France.
    Hotaran, Anca
    National Institute for Research and Development in Informatics, Bucharest, Romania.
    Jakoniené, Vaida
    (Linköping University, Department of Computer and Information Science, IISLAB - Laboratory for Intelligent Information Systems.
    Krippahl, Ludwig
    Universidade Nova de Lisboa, Portugal.
    Lambrix, Patrick
    (Linköping University, Department of Computer and Information Science, IISLAB - Laboratory for Intelligent Information Systems.
    McLeod, Kenneth
    Heriot-Watt University/MRC Human GeneticsUnit, Edinburgh, UK.
    Nutt, Werner
    Heriot-Watt University/MRC Human GeneticsUnit, Edinburgh, UK.
    Olsson, Bjorn
    University of Skövde, Sweden.
    Schroeder, Michael
    Technische Universität Dresden, Germany.
    Schroiff, Anna
    University of Skövde, Sweden.
    Royer, Luc
    Technische Universität Dresden, Germany.
    Soliman, Sylvain
    INRIA Rocquencourt, Paris, France.
    Tan, He
    (Linköping University, Department of Computer and Information Science, IISLAB - Laboratory for Intelligent Information Systems.
    Tilivea, Doina
    National Institute for Research and Development in Informatics, Bucharest, Romania.
    Will, Sebastian
    Friedrich-Schiller-Universit¨at Jena, Germany.
    Requirements and specification of bioinformatics use cases2005Report (Other academic)
    Abstract [en]

    This deliverable specifies use cases based on bioinformatics research carried out by members ofA2. The use cases involve the use of rules to reason over ontologies and pathways (Dresden,Edinburgh, Paris, Linköping) and rules to specify workflows to integrate bioinformatics data (Lisbon, Skövde, Jena, Bucharest). The use cases are designed as a reference point to foster the take up of A2 use cases by I-work packages. Most notably, many of the use cases specify the need for querying and reactivity with languages like Xcerpt (I4), Erus (I5) and Prova (I5). The use cases range from basic research applications to fully deployed software with an international user base.

  • 12.
    Backofen, Rolf
    et al.
    Albert-Ludwigs-universität Freiburg, Germany.
    Burger, Albert
    Heriot-Watt university Edinburgh, UK.
    Busch, Anke
    Albert-Ludwigs-universität Freiburg, Germany.
    Dawelbait, Gihan
    TU Dresden, Germany.
    Fages, Francois
    INRIA Rocquencourt Paris, France.
    Jakoniené, Vaida
    Linköping University, Department of Computer and Information Science, IISLAB - Laboratory for Intelligent Information Systems.
    Lambrix, Patrick
    Linköping University, Department of Computer and Information Science, IISLAB - Laboratory for Intelligent Information Systems.
    McLeod, Kenneth
    Heriot-Watt university Edinburgh, UK.
    Soliman, Sylvain
    INRIA Rocquencourt Paris, France.
    Tan, He
    Linköping University, Department of Computer and Information Science, IISLAB - Laboratory for Intelligent Information Systems.
    Will, Sebastian
    Albert-Ludwigs-universität Freiburg, Germany.
    Implementation of prototypes2007Report (Other academic)
  • 13.
    Backofen, Rolf
    et al.
    Friedrich-Schiller-Universität Jena, Germany.
    Mike, Badea
    Victoria University of Manchester, UK.
    Barahona, Pedro
    FCT-UNL, Lisbon.
    Burger, Albert
    Harriot-Watt University, Edinburgh, UK.
    Dawelbait, Gihan
    Technical University of Dresden, Germany.
    Doms, Andreas
    Technical University of Dresden, Germany.
    Fages, Francois
    INRIA Rocquencourt, France.
    Hotaran, Anca
    National Institute for Research and Development in Informatics, Romania.
    Jakoniené, Vaida
    Linköping University, Department of Computer and Information Science, IISLAB - Laboratory for Intelligent Information Systems.
    Krippahl, Ludwig
    FCT-UNL, Lisbon.
    Lambrix, Patrick
    Linköping University, Department of Computer and Information Science, IISLAB - Laboratory for Intelligent Information Systems.
    McLeod, Kenneth
    Harriot-Watt University, Edinburgh, UK.
    Möller, Steffen
    Universität Rostock, Germany.
    Nutt, Werner
    Harriot-Watt University, Edinburgh, UK.
    Olsson, Björn
    University of Skövde, Sweden.
    Schroeder, Michael
    Technical University of Dresden, Germany.
    Soliman, Sylvain
    INRIA Rocquencourt, France.
    Tan, He
    Linköping University, Department of Computer and Information Science, IISLAB - Laboratory for Intelligent Information Systems.
    Tilivea, Doina
    National Institute for Research and Development in Informatics, Romania.
    Will, Sebastian
    Friedrich-Schiller-Universität Jena, Germany.
    Usage of bioinformatics tools and identification of information sources2005Report (Other academic)
    Abstract [en]

    Bioinformatics is an important application area for semantic web technologies as much of the data is online and accessible in XML format, as some sites already support web services, and as ontologies are widely used to annotate data. In this deliverable, we give a survey over 18 of the most important bioinformatics resources and discuss their availability and accessibility, which are two of the main criteria for these resources to act as bases for later demonstrators.

  • 14. Baptista, Ana Alice
    et al.
    Linde, PeterBlekinge Tekniska Högskola, Biblioteket.Lavesson, NiklasBlekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation.Brito, Miguel Abrunhosa de
    Social Shaping of Digital Publishing: Exploring the Interplay Between Culture and Technology - Proceedings of the 16th International Conference on Electronic Publishing2012Collection (editor) (Other academic)
    Abstract [en]

    Since the advent of the Web, the processes and forms of electronic publishing have been changing. The open access movement has been a major driver of change in recent years with regard to scholarly communication; however, changes are also evident in other fields of application such as e-government and e-learning. In most cases these changes are driven by technological advances, but there are also cases where a change in social reality pushes technological development. Both the social and mobile web and linked data are currently shaping the edge of research in digital publishing. Liquid publishing is on the more daring agendas. Digital preservation is an issue that poses great challenges which are still far from being solved. The legal issues, security and trust continue to deserve our full attention. We need new visualization techniques and innovative interfaces that will keep pace with the global dimension of information. This is the current scenario, but what will follow? What are the technologies and social and communication paradigms that we will be discussing in ten or twenty years? ELPUB 2012 focuses on the social shaping of digital publishing, exploring the interplay between culture and technology. This makes the fact that it is being held in the European Capital of Culture for 2012, Guimarães, Portugal, all the more appropriate. 52 submissions were received for ELPUB 2012, from which 23 articles and 10 posters were accepted after peer review. Of the accepted articles, 11 were submitted as full articles and 12 as extended abstracts. These articles have been grouped into sessions on the following topics: Sessions 1 and 4 – Digital Scholarship & Publishing; Session 2 – Special Archives; Session 3 – Libraries & Repositories, Session 5 – Digital Texts & Readings, and Session 6 – Future Solutions & Innovations. The programme features two keynote speeches. Kathleen Fitzpatrick's speech is entitled “Planned Obsolescence: Publishing, Technology, and the Future of the Academy”, that of Antonio Câmara is entitled “Publishing in 2021”. Finally we call your attention to the panel on e-books, which is entitled “Academic e-books – Technological hostage or cultural redeemer?”. We believe this is another great edition of the ELPUB conference. We would like to take this opportunity to thank both the members of the ELPUB executive committee and the members of the local advisory committee, for making it happen. Together they provided valuable advice and assistance during the entire organization process. Secondly we would like to mention our colleagues on the program committee, who assured the quality of the conference through the peer review process. Last but not least, we wish to thank the local organization team for ensuring that all this effort culminates in a very interesting scientific event on the 14th and 15th of June. Thank you all for helping us to maintain the quality of ELPUB and merit the trust of our authors and attendees. We wish you all a good conference and we say farewell, hoping to see you again in Sweden in 2013!

  • 15.
    Barkhuus, Louise
    et al.
    University of California, San Diego, California, USA.
    Lecusay, Robert
    University of California, San Diego, California, USA.
    Social infrastructures as barriers and foundation for informal learning: Technology integration in an urban after-school center2012In: Computer Supported Cooperative Work, ISSN 0925-9724, E-ISSN 1573-7551, Vol. 21, no 1, p. 81-103Article in journal (Refereed)
    Abstract [en]

    In this paper we explore the relationship between social learning environments and the technological ecologies that practitioners, learners, and researchers develop to sustain them. Through an examination of ethnographic research conducted at an urban after-school learning program we show how social, technological and power infrastructures influence learning and interaction in this setting. Adopting a holistic approach we examine how technologies are integrated into activities in this program to support the learning of the after-school youth. We emphasize both positive and negative infrastructures that contribute to the learning environment and discuss how identifying these infrastructures are one of the first steps towards understanding and informing technology design in informal learning settings.

  • 16.
    Bengtsson, Tomas
    et al.
    Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Kumar, Shashi
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering. Jönköping University, School of Engineering, JTH. Research area Robust Embedded Systems.
    Ubar, R.
    Jutman, Artur
    Peng, Zebo
    Test methods for crosstalk-induced delay and glitch faults in network-on-chip interconnects implementing asynchronous communication protocols2008In: IET Computers and Digital Techniques, ISSN 1751-8601, Vol. 2, no 6, p. 445-460Article in journal (Refereed)
  • 17. Beyene, Ayne A.
    et al.
    Welemariam, Tewelle
    Persson, Marie
    Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik.
    Lavesson, Niklas
    Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik.
    Improved concept drift handling in surgery prediction and other applications2015In: Knowledge and Information Systems, ISSN 0219-1377, E-ISSN 0219-3116, Vol. 44, no 1, p. 177-196Article in journal (Refereed)
    Abstract [en]

    The article presents a new algorithm for handling concept drift: the Trigger-based Ensemble (TBE) is designed to handle concept drift in surgery prediction but it is shown to perform well for other classification problems as well. At the primary care, queries about the need for surgical treatment are referred to a surgeon specialist. At the secondary care, referrals are reviewed by a team of specialists. The possible outcomes of this review are that the referral: (i) is canceled, (ii) needs to be complemented, or (iii) is predicted to lead to surgery. In the third case, the referred patient is scheduled for an appointment with a surgeon specialist. This article focuses on the binary prediction of case three (surgery prediction). The guidelines for the referral and the review of the referral are changed due to, e.g., scientific developments and clinical practices. Existing decision support is based on the expert systems approach, which usually requires manual updates when changes in clinical practice occur. In order to automatically revise decision rules, the occurrence of concept drift (CD) must be detected and handled. The existing CD handling techniques are often specialized; it is challenging to develop a more generic technique that performs well regardless of CD type. Experiments are conducted to measure the impact of CD on prediction performance and to reduce CD impact. The experiments evaluate and compare TBE to three existing CD handling methods (AWE, Active Classifier, and Learn++) on one real-world dataset and one artificial dataset. TBA significantly outperforms the other algorithms on both datasets but is less accurate on noisy synthetic variations of the real-world dataset.

  • 18.
    Bhattacharyya, Prantik
    et al.
    Department of Computer Science, University of California, Davis, USA.
    Rowe, Jeff
    Department of Computer Science, University of California, Davis, USA.
    Wu, Felix
    Department of Computer Science, University of California, Davis, USA.
    Haigh, Karen
    Intelligent Distributed Computing Group, BBN Technologies, USA.
    Lavesson, Niklas
    School of Computing, Blekinge Institute of Technology, Sweden.
    Johnson, Henric
    School of Computing, Blekinge Institute of Technology, Sweden.
    Your Best might not be Good enough: Ranking in Collaborative Social Search Engines2011Conference paper (Refereed)
    Abstract [en]

    A relevant feature of online social networks like Facebook is the scope for users to share external information from the web with their friends by sharing an URL. The phenomenon of sharing has bridged the web graph with the social network graph and the shared knowledge in ego networks has become a source for relevant information for an individual user, leading to the emergence of social search as a powerful tool for information retrieval. Consideration of the social context has become an essential factor in the process of ranking results in response to queries in social search engines. In this work, we present InfoSearch, a social search engine built over the Facebook platform, which lets users search for information based on what their friends have shared. We identify and implement three distinct ranking factors based on the number of mutual friends, social group membership, and time stamp of shared documents to rank results for user searches. We perform user studies based on the Facebook feeds of two authors to understand the impact of each ranking factor on the result for two queries.

  • 19.
    Billig, Andreas
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    A TRIPLE-Oriented Approach for Integrating Higher-Order Rules and External Contexts2008In: Web Reasoning and Rule Systems, Second International Conference, RR 2008, Karlsruhe, Germany, October 31-November 1, 2008, Heidelberg: Springer , 2008, p. 214-221Conference paper (Refereed)
    Abstract [en]

     

     

    In recent years, many researchers in the area of reasoning have focussed on the adoption of rule languages for the Semantic Web that led to remarkable approaches offering various functionality. On one hand, this included language elements of the rule part itself like contexts, higher-orderness, and non-monotonic negation. On the other hand, the proper integration with ontology languages like RDF and OWL had to consider language-speci c properties like disjunctivity as well as the demand for using existing external components. The paper proposes a T

     

    riple-oriented hybrid language that integrates the mentioned language elements.

     

     

  • 20.
    Billig, Andreas
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Blomqvist, Eva
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Lin, Feiyu
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Semantic Matching based on Enterprise Ontologies2007In: Proccedings of OTM 2007: ODBASE - The 6th International Conference on Ontologies, DataBases, and Applications of Semantics, Vilamoura, Algarve, Portugal, November 25-30, 2007, 2007Conference paper (Refereed)
  • 21.
    Björkman, Lucas
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Erixon, Jimmy
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Produktkonfigurator2010Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Rapporten presenterar skapandet av en produktkonfigurator och flera förslag på hur den kan förbättras. Uppdraget gavs av System Andersson till två studenter på Jönköpings Tekniska Högskola som genomförde detta som sitt examensarbete.

    Rapporten diskuterar möjliga lösningar på en produktkonfigurator och visar ett resultat som utgår från dessa lösningar. Produktkonfiguratorn i rapporten består av två delar.

    Dels konfigurationsdelen som hjälper användaren att skapa nya produkter utifrån valda artiklar. Artiklarna sorteras automatiskt av produktkonfiguratorn så att endast kompatibla artiklar kan sättas ihop. Detta sker med ett ”drag and drop” gränssnitt.

    Dessutom innehåller produktkonfiguratorn en kompatibilitetsdel, vars uppgift är att underlätta vid definierandet av kompatibilitet mellan artiklar. Detta kan göras löpande under tiden en produkt konfigureras om så önskas. Användaren kan välja på två eller flera artiklar som ska vara kompatibla med varandra, eller hela kategorier.

    Sist i rapporten diskuteras de val som gjorts under arbetets gång och möjliga förbättringar som kan göras på produktkonfiguratorn.

  • 22.
    Blomqvist, Eva
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Case-based Reasoning for Ontology Engineering2008In: Tenth Scandinavian Conference on Artificial Intelligence - SCAI 2008, Amsterdam: IOS Press , 2008, p. 36-43Conference paper (Refereed)
    Abstract [en]

    When developing semantic applications, constructing the underlying ontologies is a crucial part. Construction of both Semantic Web and enterprise ontologies need to be semi-automatic in order to reduce the effort required and the need for expert ontology engineers. Another important issue is to introduce knowledge reuse in the ontology construction process. By basing our semi-automatic method on the principles of case-based reasoning (CBR) we envision a novel semi-automatic ontology construction approach and also a novel application of case-based reasoning. The development of OntoCase is still ongoing work, in this paper we report mainly on the motivation for using CBR and the possible benefits of this.

  • 23.
    Blomqvist, Eva
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    OntoCase - A Pattern-based Ontology Construction Approach2007In: Proccedings of OTM 2007: ODBASE - The 6th International Conference on Ontologies, DataBases, and Applications of Semantics, Vilamoura, Algarve, Portugal, November 25-30, 2007, 2007Conference paper (Refereed)
  • 24.
    Blomqvist, Eva
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Pattern Ranking for Semi-automatic Ontology Construction2008In: Proceedings of the 2008 ACM symposium on Applied computing: Track on Semantic Web and Applications (SWA), 2008, p. 2248-Conference paper (Refereed)
    Abstract [en]

    When developing semantic applications, the construction

    of ontologies is a crucial part. We are developing a semiautomatic

    ontology construction approach, OntoCase, relying

    on ontology patterns as additional resources. A crucial

    part of this approach is how to select the appropriate patterns

    based on the input representation extracted from a

    text corpus. In this paper, we suggest a pattern ranking

    and selection approach with the ability to partially bridge

    the gap between abstract patterns and specific terms, as well

    as being specifically tuned to the characteristics of ontology

    patterns. Compared to existing ontology ranking schemes

    our approach adds indirect matching of terms as well as relation

    matching. An initial experiment indicates that Onto-

    Case ranking performs better, especially when ranking small

    and abstract patterns, than existing ranking approaches.

  • 25.
    Blomqvist, Eva
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Semi-automatic Ontology Engineering using Patterns2007In: Proceedings of ISWC07 Doctoral Consortium, Busan, Korea, November 11-15, 2007, 2007Conference paper (Refereed)
  • 26.
    Blomqvist, Eva
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering. Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    State of the Art: Patterns in Ontology Engineering2004Report (Other academic)
    Abstract [en]

    This report brings together three different areas, Ontology Learning, ontology reuse and patterns in Computer Science in general. These three areas may not seem to have much in common but the report aims to illustrate the potential of bringing them together and to outline research possibilities in the field. Patterns have been successfully applied as a means for facilitating reuse and managing complexity in many areas. So far not many pattern approaches have emerged in Ontology Engineering especially when considering patterns for use with Ontology Learning systems or patterns to facilitate reuse of ontologies. This report is concluded by a discussion about future research possibilities in the field. Among other things more exchange between Ontology Engineering and Software Engineering is suggested. Researchers should draw from already existing knowledge when creating ontology patterns. The most interesting applications of ontology patterns in the future are to further facilitate Ontology Learning, by for example using the patterns as construction templates, and to facilitate reuse of ontologies by using the patterns to search and sort ontology libraries.

  • 27.
    Blomqvist, Eva
    et al.
    Linköping University, Department of Computer and Information Science; STLab, ISTC-CNR.
    Gangemi, AldoSTLab, ISTC-CNR.Hammar, KarlJönköping University, School of Engineering, JTH, Computer and Electrical Engineering. Jönköping University, School of Engineering, JTH. Research area Information Engineering.Suárez-Figueroa, Mari CarmenOntology Engineering Group, Universidad Politécnica de Madrid.
    WOP 2012: Proceedings of the 3rd Workshop on Ontology Patterns2012Conference proceedings (editor) (Refereed)
  • 28.
    Blomqvist, Eva
    et al.
    Linköping University, Linköping, Sweden.
    Hammar, Karl
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics. Jönköping University, School of Engineering, JTH. Research area Computer Science and Informatics.
    Presutti, Valentina
    ISTC-CNR, Rome, Italy.
    Engineering Ontologies with Patterns - The eXtreme Design Methodology2016In: Ontology Engineering with Ontology Design Patterns / [ed] Pascal Hitzler, Aldo Gangemi, Krzysztof Janowicz, Adila Krisnadhi, Valentina Presutti, IOS Press, 2016, p. 23-50Chapter in book (Refereed)
    Abstract [en]

    When using Ontology Design Patterns (ODPs) for modelling new parts of an ontology, i.e., new ontology modules, or even an entire ontology from scratch, ODPs can be used both as inspiration for different modelling solutions, as well as concrete templates or even “building blocks” reused directly in the new solution. This chapter discusses how ODPs, and in particular Content ODPs, can be used in ontology engineering. In particular, a specific ontology engineering methodology is presented, which was originally developed for supporting ODP use. However, this methodology, the eXtreme Design (XD), also has some characteristics that set it apart from most other ontology engineering methodologies, and which may be interesting to consider regardless of how much emphasis is put on the ODP usage. Towards the end of the chapter some XD use cases are also reported and discussed, as well as lessons learned from applying XD. The chapter is concluded through a summary and discussion about future work.

  • 29.
    Blomqvist, Eva
    et al.
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Levashova, Tatiana
    Öhgren, Annika
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Sandkuhl, Kurt
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Smirnov, Alexander
    Tarasov, Vladimir
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Configuration of Dynamic SME Supply Chains Based on Ontologies2005In: Holonic and Multi-Agent Systems for Manufacturing: Second International Conference on Industrial Applications of Holonic and Multi-Agent Systems, HoloMAS 2005, Copenhagen, Denmark, August 22-24, 2005. Proceedings / [ed] V. Marik, R. W. Brennan & M. Pechoucek, Springer Berlin/Heidelberg, 2005, p. 246-256Conference paper (Refereed)
    Abstract [en]

    Due to the increasing implementation of agile and networked manufacturing, supply chain has entered a new phase, virtual supply chain. The phase is characterized by the integration of activities, operations, and functions carried out at different and geographically distributed supply chain stages. The paper proposes an approach to the configuration of a network of small and medium-sized enterprises (SMEs) being integrated into a supply chain. The SME supply chain configuration is based on a shared domain ontology for supply chain management, offering the configuration task as a function of supply chain management. Principles of the development of the shared ontology and possible ways of matching between enterprise and domain ontologies are considered.

  • 30.
    Blomqvist, Eva
    et al.
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Sandkuhl, KurtJönköping University, School of Engineering, JTH. Research area Information Engineering.Scharffe, FrancoisSvatek, Vojtek
    Proceedings of the Workshop on Ontology Patterns (WOP 2009): at 8th International Semantic Web Conference, Washington D.C., October 25-29, 20092009Conference proceedings (editor) (Other (popular science, discussion, etc.))
    Abstract [en]

    High-quality and reusable ontologies are considered as key element of the Semantic Web and for successful semantic applications. Ontology Design Patterns (ODPs) are addressing these quality and reusability issues by providing different types of patterns supporting ontology designers. ODPs are collected in various repositories, such as the catalogue maintained by the University of Manchester and the ODP portal at small and do not cover all types of patterns and all domains. Semantic Web applications could also benefit from additional types of patterns, such as enterprise model patterns and specialized software patterns for semantic applications.

    Patterns are an approach to knowledge reuse that proved feasible and very beneficial in various areas, such as software engineering and data modeling. Reuse has been an important research subject in ontology engineering and the semantic web community for many years. Patterns need to be shared by a community in order to provide a common language and stimulate pattern usage and development. Hence, the aim of this workshop was twofold

    - providing an arena for proposing and discussing good practices, patterns, pattern-based ontologies, systems etc

    - broadening the pattern community that will develop its own “language” for discussing and describing relevant problems and their solutions.

    The workshop included a track for research papers addressing various aspects of ontology patterns and investigating application areas, and a pattern track focusing on presentation and discussion of actual ontology patterns.

  • 31.
    Blomqvist, Eva
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering. Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Öhgren, Annika
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering. Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Constructing an enterprise ontology for an automotive supplier2008In: Engineering applications of artificial intelligence, ISSN 0952-1976, E-ISSN 1873-6769, Vol. 21, no 3, p. 386-397Article in journal (Refereed)
    Abstract [en]

    This paper presents experiences and conclusions from ontology engineering applied in the automotive suppliers domain. The work focuses on construction of enterprise ontologies to support structuring of enterprise information and knowledge management. Two methods for ontology construction, developed by previous research activities, were used in parallel when developing an ontology for a company in automotive supplier industries. One method is automatic and the other method is a manual approach. A conclusion was that the developed ontologies complemented each other well and therefore the decision was made to merge them for use in the project. The resulting ontology will now be used in several pilot applications.

  • 32.
    Blomqvist, Eva
    et al.
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Öhgren, Annika
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Sandkuhl, Kurt
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Comparing and Evaluating Ontology Construction in an Enterprise Context2008In: Enterprise Information Systems: 8th International Conference, ICEIS 2006, Paphos, Cyprus, May 23-27, 2006, Revised Selected Papers, Berlin-Heidelberg: Springer , 2008, Vol. 3, p. 221-240Chapter in book (Other academic)
    Abstract [en]

    Structuring enterprise information and supporting knowledge management is a growing application field for enterprise ontologies. Research work presented in this paper focuses on construction of enterprise ontologies. In an experiment, two methods were used in parallel when developing an ontology for a company in automotive supplier industries. One method is based on automatic ontology construction, the other method is a manual approach based on cookbook-like instructions. The paper compares and evaluates the methods and their results. For ontology evaluation, selected approaches were combined including both evaluation by ontology engineers and evaluation by domain experts. The main conclusion is that the compared methods have different strengths and an integration of both developed ontologies and used methods should be investigated.

  • 33.
    Boeva, Veselka
    et al.
    Computer Systems and Technologies Department, Technical University of Sofia, branch Plovdiv, Plovdiv, Bulgaria.
    Ivanova, Petia
    Computer Systems and Technologies Department, Technical University of Sofia, branch Plovdiv, Plovdiv, Bulgaria.
    Lavesson, Niklas
    School of Computing Blekinge, Institute of Technology, Ronneby, Sweden.
    A Hybrid Computational Method for the Identification of Cell Cycle-regulated Genes2010Conference paper (Refereed)
    Abstract [en]

    Gene expression microarrays are the most commonly available source of high-throughput biological data. They have been widely employed in recent years for the definition of cell cycle regulated (or periodically expressed) subsets of the genome in a number of different organisms. These have driven the development of various computational methods for identifying periodical expressed genes. However, the agreement is remarkably poor when different computational methods are applied to the same data. In view of this, we are motivated to propose herein a hybrid computational method targeting the identification of periodically expressed genes, which is based on a hybrid aggregation of estimations, generated by different computational methods. The proposed hybrid method is benchmarked against three other computational methods for the identification of periodically expressed genes: statistical tests for regulation and periodicity and a combined test for regulation and periodicity. The hybrid method is shown, together with the combined test, to statistically significantly outperform the statistical test for periodicity. However, the hybrid method is also demonstrated to be significantly better than the combined test for regulation and periodicity.

  • 34.
    Boldt, Martin
    et al.
    Department of Systems and Software Engineering, School of Engineering, Blekinge Institute of Technology, Ronneby, Sweden.
    Jacobsson, Andreas
    Department of Systems and Software Engineering, School of Engineering, Blekinge Institute of Technology, Ronneby, Sweden.
    Lavesson, Niklas
    Department of Systems and Software Engineering, School of Engineering, Blekinge Institute of Technology, Ronneby, Sweden.
    Davidsson, Paul
    Department of Systems and Software Engineering, School of Engineering, Blekinge Institute of Technology, Ronneby, Sweden.
    Automated Spyware Detection Using End User License Agreements2008Conference paper (Refereed)
    Abstract [en]

    The amount of spyware increases rapidly over the Internet and it is usually hard for the average user to know if a software application hosts spyware. This paper investigates the hypothesis that it is possible to detect from the End User License Agreement (EULA) whether its associated software hosts spyware or not. We generated a data set by collecting 100 applications with EULAs and classifying each EULA as either good or bad. An experiment was conducted, in which 15 popular default-configured mining algorithms were applied on the data set. The results show that 13 algorithms are significantly better than random guessing, thus we conclude that the hypothesis can be accepted. Moreover, 2 algorithms also perform significantly better than the current state-of-the-art EULA analysis method. Based on these results, we present a novel tool that can be used to prevent the installation of spyware.

  • 35. Borg, Anton
    et al.
    Boldt, Martin
    Lavesson, Niklas
    Blekinge Institute of Technology, School of Computing, Karlskrona, Sweden.
    Informed Software Installation through License Agreement Categorization2011Conference paper (Refereed)
    Abstract [en]

    Spyware detection can be achieved by using machinelearning techniques that identify patterns in the End User License Agreements (EULAs) presented by application installers. However, solutions have required manual input from the user with varying degrees of accuracy. We have implemented an automatic prototype for extraction and classification and used it to generate a large data set of EULAs. This data set is used to compare four different machine learning algorithms when classifying EULAs. Furthermore, the effect of feature selection is investigated and for the top two algorithms, we investigate optimizing the performance using parameter tuning. Our conclusion is that feature selection and performance tuning are of limited use in this context, providing limited performance gains. However, both the Bagging and the Random Forest algorithms show promising results, with Bagging reaching an AUC measure of 0.997 and a False Negative Rate of 0.062. This shows the applicability of License Agreement Categorization for realizing informed software installation.

  • 36.
    Borg, Anton
    et al.
    Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik.
    Boldt, Martin
    Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik.
    Lavesson, Niklas
    Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik.
    Melander, Ulf
    Boeva, Veselka
    Detecting serial residential burglaries using clustering2014In: Expert systems with applications, ISSN 0957-4174, E-ISSN 1873-6793, Vol. 41, no 11, p. 5252-5266Article in journal (Refereed)
    Abstract [en]

    According to the Swedish National Council for Crime Prevention, law enforcement agencies solved approximately three to five percent of the reported residential burglaries in 2012. Internationally, studies suggest that a large proportion of crimes are committed by a minority of offenders. Law enforcement agencies, consequently, are required to detect series of crimes, or linked crimes. Comparison of crime reports today is difficult as no systematic or structured way of reporting crimes exists, and no ability to search multiple crime reports exist. This study presents a systematic data collection method for residential burglaries. A decision support system for comparing and analysing residential burglaries is also presented. The decision support system consists of an advanced search tool and a plugin-based analytical framework. In order to find similar crimes, law enforcement officers have to review a large amount of crimes. The potential use of the cut-clustering algorithm to group crimes to reduce the amount of crimes to review for residential burglary analysis based on characteristics is investigated. The characteristics used are modus operandi, residential characteristics, stolen goods, spatial similarity, or temporal similarity. Clustering quality is measured using the modularity index and accuracy is measured using the rand index. The clustering solution with the best quality performance score were residential characteristics, spatial proximity, and modus operandi, suggesting that the choice of which characteristic to use when grouping crimes can positively affect the end result. The results suggest that a high quality clustering solution performs significantly better than a random guesser. In terms of practical significance, the presented clustering approach is capable of reduce the amounts of cases to review while keeping most connected cases. While the approach might miss some connections, it is also capable of suggesting new connections. The results also suggest that while crime series clustering is feasible, further investigation is needed.

  • 37.
    Borg, Anton
    et al.
    Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation.
    Lavesson, Niklas
    Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation.
    E-mail Classification using Social Network Information2012Conference paper (Refereed)
    Abstract [en]

    A majority of E-mail is suspected to be spam. Traditional spam detection fails to differentiate between user needs and evolving social relationships. Online Social Networks (OSNs) contain more and more social information, contributed by users. OSN information may be used to improve spam detection. This paper presents a method that can use several social networks for detecting spam and a set of metrics for representing OSN data. The paper investigates the impact of using social network data extracted from an E-mail corpus to improve spam detection. The social data model is compared to traditional spam data models by generating and evaluating classifiers from both model types. The results show that accurate spam detectors can be generated from the low-dimensional social data model alone, however, spam detectors generated from combinations of the traditional and social models were more accurate than the detectors generated from either model in isolation.

  • 38.
    Boström, Henrik
    et al.
    Department of Computer and Systems Sciences, Stockholm University, Kista, Sweden.
    Linusson, Henrik
    Department of Information Technology, University of Borås, Borås, Sweden.
    Löfström, Tuve
    Department of Information Technology, University of Borås, Borås, Sweden.
    Johansson, Ulf
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics. Jönköping University, School of Engineering, JTH. Research area Computer Science and Informatics.
    Evaluation of a variance-based nonconformity measure for regression forests2016In: Conformal and Probabilistic Prediction with Applications, Springer, 2016, p. 75-89Conference paper (Refereed)
    Abstract [en]

    In a previous large-scale empirical evaluation of conformal regression approaches, random forests using out-of-bag instances for calibration together with a k-nearest neighbor-based nonconformity measure, was shown to obtain state-of-the-art performance with respect to efficiency, i.e., average size of prediction regions. However, the use of the nearest-neighbor procedure not only requires that all training data have to be retained in conjunction with the underlying model, but also that a significant computational overhead is incurred, during both training and testing. In this study, a more straightforward nonconformity measure is investigated, where the difficulty estimate employed for normalization is based on the variance of the predictions made by the trees in a forest. A large-scale empirical evaluation is presented, showing that both the nearest-neighbor-based and the variance-based measures significantly outperform a standard (non-normalized) nonconformity measure, while no significant difference in efficiency between the two normalized approaches is observed. Moreover, the evaluation shows that state-of-theart performance is achieved by the variance-based measure at a computational cost that is several orders of magnitude lower than when employing the nearest-neighbor-based nonconformity measure. 

  • 39.
    Buanahagi, Edelson da Glória Baltazar
    et al.
    Jönköping University, Jönköping International Business School, JIBS, Business Informatics.
    Odoko, Akpotareghe
    Jönköping University, Jönköping International Business School, JIBS, Business Informatics.
    Knowledge Management as a Strategic Resource to gain Competitive Advantage2012Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Even though knowledge management has progressed from an embryonic to an increasingly recognized discipline over the course of the last decade, the bulk of studies in knowledge management have been descriptive and focused on definitions and integrating existing definitions. There have been relatively few studies (mostly surveys) that focus on knowledge management in relation to other organizational factors (Zack, McKeen & Singh, 2009), and work in the area of knowledge management and competitive advantage has been found to be theoretically and empirically immature and underdeveloped (Chuang, 2004).

     

    Therefore, aim of this research was to fill in the identified gaps by utilizing the resource-based view of a company to conduct an exploratory qualitative study to provide empirical and practical evidence regarding the relationship between knowledge management and competitive advantage. This was done mainly through interviews with knowledge management academics and practitioners in an attempt to have multiple perspectives on the matter to gain deeper understanding.

     

    From the interviews, a number of observations were made. First, knowledge management can be used strategically to gain competitive advantage but this can only be done by introducing a successful knowledge management initiative. This calls for an implementation approach based on focus and measurement as principles and that takes into account strategy, organizational learning, culture and systems and technology as pre-conditional dimensions for a successful knowledge management project. In addition, these principles and preconditions all have to take the people into consideration as the people play a centre role in this system, being the ones that actually establish, run and maintain these mechanisms.

     

    These findings are then synthesized into a knowledge management implementation model that may serve as a starting point for further research in successful knowledge management implementation. Practitioners may also use these findings and model as a tool for successful knowledge management implementation.

  • 40.
    Cardoso, Jorge
    et al.
    SAP Research Dresden.
    van der Aalst, Wil
    Eindhoven University of Technology.
    Bussler, Christoph
    Merced Systems.
    Sheth, Amit
    Wright State University.
    Sandkuhl, Kurt
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Inter-enterprise System and Application Integration: A Reality Check2008In: Enterprise Information Systems: 9th ICEIS 2007, Revised Selected Papers, Heidelberg: Springer , 2008, p. 3-15Chapter in book (Other academic)
    Abstract [en]

    This paper structures the summary of the panel held at the 9th International Conference on Enterprise Information Systems, Funchal, Madeira, 12-16 June 2007 that addressed the following question: "Are you still working on Inter-Enterprise Systems and Application Integration?" The panel aggregated distinguished experts from the areas of process management, workflow, Web services, SOA, and Semantic Web.

  • 41.
    Carlsson, Lars
    et al.
    Drug Safety and Metabolism, AstraZeneca Innovative Medicines and Early Development, Mölndal, Sweden.
    Ahlberg, Ernst
    Drug Safety and Metabolism, AstraZeneca Innovative Medicines and Early Development, Mölndal, Sweden.
    Boström, Henrik
    Department of Systems and Computer Sciences, Stockholm University, Stockholm, Sweden.
    Johansson, Ulf
    School of Business and IT, University of Borås, Borås, Sweden.
    Linusson, Henrik
    School of Business and IT, University of Borås, Borås, Sweden.
    Modifications to p-Values of conformal predictors2015In: Statistical learning and data sciences, Springer, 2015, p. 251-259Conference paper (Refereed)
    Abstract [en]

    The original definition of a p-value in a conformal predictor can sometimes lead to too conservative prediction regions when the number of training or calibration examples is small. The situation can be improved by using a modification to define an approximate p-value. Two modified p-values are presented that converges to the original p-value as the number of training or calibration examples goes to infinity. Numerical experiments empirically support the use of a p-value we call the interpolated p-value for conformal prediction. The interpolated p-value seems to be producing prediction sets that have an error rate which corresponds well to the prescribed significance level.

  • 42.
    Chemnitz, Chris
    et al.
    Jönköping University, Jönköping International Business School, JIBS, Business Informatics.
    Borg, Carl
    Jönköping University, Jönköping International Business School, JIBS, Business Informatics.
    Elgquist, Oscar
    Jönköping University, Jönköping International Business School, JIBS, Business Informatics.
    VMI: A study of benefits with a VMI system2006Independent thesis Basic level (degree of Bachelor), 10 points / 15 hpStudent thesis
    Abstract [en]

    Abstract

    Today, the market is getting tougher and tougher and organisations need to concentrate more on the organisations core competence, to become successful and gain competitive advantage. One way to get this competitive advantage for an organisation is to start using Vendor Managed Inventory (VMI) system. A VMI system, with the help of Electronic Data Interchange (EDI), manages the informational and material flow between the distributor and the supplier by automation. This means that the supplier receives accurate information from the distributor, and can thereby plan deliveries of products when needed and at the right amount. These deliveries are done by automation and are based on the distributor’s shared information such as inventory- and sales figures. We have as a goal for this thesis to examine if the positive benefits described by literature do reflect those benefits with the benefits experienced by organisations.

    The following question will be discussed and answered during this thesis:

    • Do the benefits of a VMI system described in theories, match the benefits experienced by an organisation?

    To answer our question, we have interviewed two managers about their companies’ way to use VMI. One interview was performed at a store working in the retail market and the other interview was performed at a grocery store. The interviews were performed to receive a deeper understanding of what the managers think about VMI, and also to understand how these benefits have been beneficial for their company. After the interviews, we started to compare and analyse the benefits gathered from literature with the benefits experienced by the managers for the companies. The analysis and comparison proved that there is a similarity between the benefits gathered from literature and the benefits experienced by the interviewees. We decided to categorise the benefits into three different categories: costs, service and inventory. Believing that this categorization was a good way to get you as a reader to have a lucid overview of which the benefits are, and which area of business they are beneficial in. Many of the gathered benefits could affect more than one area of business, and many cases benefits are created through chain reactions, benefits breeds new benefits.

    The similarity of the benefits collected from the empirical findings compared with the benefits from theories, are striking, and we can thereby concluded that the experienced benefits by an organization using a VMI system highly represents the benefits described in the theories from literature.

  • 43.
    Coppens, Sam
    et al.
    Ghent University.
    Hammar, KarlJönköping University, School of Engineering, JTH, Computer and Electrical Engineering. Jönköping University, School of Engineering, JTH. Research area Information Engineering. Jönköping University, School of Engineering, JTH. Research area Information Engineering.Knuth, MagnusUniversity of Potsdam.Neumann, MarcoKONA LLC, New York, USA.Ritze, DominiqueUniversity of Mannheim.Sack, HaraldUniversity of Potsdam.Vander Sande, MielGhent University.
    WaSABi 2013: Semantic Web Enterprise Adoption and Best Practice: Proceedings of the Workshop on Semantic Web Enterprise Adoption and Best Practice Co-located with 12th International Semantic Web Conference (ISWC 2013), Sydney, Australia, October 22, 20132013Conference proceedings (editor) (Refereed)
  • 44.
    Creignou, Nadia
    et al.
    Aix-Marseille Université, France.
    Meier, Arne
    Leibniz Universität, Hannover, Germany.
    Müller, Julian-Steffen
    Leibniz Universität, Hannover, Germany.
    Schmidt, Johannes
    Linköpings universitet, Programvara och system.
    Vollmer, Heribert
    Leibniz Universität, Hannover, Germany.
    Paradigms for Parameterized Enumeration2013In: Mathematical Foundations of Computer Science 2013 / [ed] Krishnendu Chatterjee, Jirí Sgall, Springer Berlin/Heidelberg , 2013, p. 290-301Conference paper (Refereed)
    Abstract [en]

    The aim of the paper is to examine the computational complexity and algorithmics of enumeration, the task to output all solutions of a given problem, from the point of view of parameterized complexity. First we define formally different notions of efficient enumeration in the context of parameterized complexity. Second we show how different algorithmic paradigms can be used in order to get parameter-efficient enumeration algorithms in a number of examples. These paradigms use well-known principles from the design of parameterized decision as well as enumeration techniques, like for instance kernelization and self-reducibility. The concept of kernelization, in particular, leads to a characterization of fixed-parameter tractable enumeration problems.

  • 45.
    Dahlbom, Anders
    et al.
    Högskolan i Skövde.
    Maria, Riveiro
    Högskolan i Skövde.
    König, Rikard
    Högskolan i Borås, Akademin för bibliotek, information, pedagogik och IT.
    Johansson, Ulf
    Högskolan i Borås, Akademin för bibliotek, information, pedagogik och IT.
    Brattberg, Peter
    Högskolan i Borås, Akademin för bibliotek, information, pedagogik och IT.
    Supporting Golf Coaching with 3D Modeling of Swings2014In: Sportinformatik X: Jahrestagung der dvs-Sektion Sportinformatik, Hamburg: Feldhaus Verlag , 2014, 10, p. 142-148Chapter in book (Refereed)
  • 46.
    Dahlquist, Victoria
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics.
    En jämförelse mellan native-, hybrid- och webbapplikationer: En undersökning om applikationernas prestandaskillnader i användargränssnittet.2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Abstract

    Purpose – The purpose of this thesis is to examine which parameters may affect application rendering of the user interface and how it differs in web application, hybrid application and native application. This thesis intends to answer the following research questions:

    1. Which parameters can affect the rendering of the user interface on a mobile application?

     

    1.  How does the rendering of the user interface differ from web application, hybrid application and native application?

    Method – The study uses a literature study to answer the first research question and uses an experimental study in which a hypothesis and prediction are formulated and tested to answer the second research question.

     

    Results – The result of the study shows that the performance of the native application’s user interface does not always perform better when performing the same task as the corresponding web and hybrid application. The web application in general had the best performance in the user interface, while hybrid application often performed inferior to the corresponding application types.

     

    Implications – The study contributes to extend the knowledge of native application’s, hybrid application’s and web application’s performance in the user interface, and can give companies and developers reference data to base their decision on the choice of application type. The study shows that all application types are worth considering, but the web and native application performed slightly better.

     

    Limitations – No long-term tests could be compared because ADB does not read graphical data for web applications and Chrome DevTools cannot perform long running tests.

  • 47.
    Dasari, Siva Krishna
    et al.
    Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik.
    Lavesson, Niklas
    Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik.
    Andersson, Petter
    Engineering Method Development, GKN Aerospace Engine Systems Sweden.
    Persson, Marie
    Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik.
    Tree-Based Response Surface Analysis2015Conference paper (Refereed)
    Abstract [en]

    Computer-simulated experiments have become a cost effective way for engineers to replace real experiments in the area of product development. However, one single computer-simulated experiment can still take a significant amount of time. Hence, in order to minimize the amount of simulations needed to investigate a certain design space, different approaches within the design of experiments area are used. One of the used approaches is to minimize the time consumption and simulations for design space exploration through response surface modeling. The traditional methods used for this purpose are linear regression, quadratic curve fitting and support vector machines. This paper analyses and compares the performance of four machine learning methods for the regression problem of response surface modeling. The four methods are linear regression, support vector machines, M5P and random forests. Experiments are conducted to compare the performance of tree models (M5P and random forests) with the performance of non-tree models (support vector machines and linear regression) on data that is typical for concept evaluation within the aerospace industry. The main finding is that comprehensible models (the tree models) perform at least as well as or better than traditional black-box models (the non-tree models). The first observation of this study is that engineers understand the functional behavior, and the relationship between inputs and outputs, for the concept selection tasks by using comprehensible models. The second observation is that engineers can also increase their knowledge about design concepts, and they can reduce the time for planning and conducting future experiments.

  • 48.
    Davidsson, Paul
    et al.
    Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation.
    Gustafsson Friberger, Marie
    Technology and Society, Malmö University, Malmö, Sweden.
    Lavesson, Niklas
    Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation.
    Persson, Jan
    Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation.
    Towards a Prediction Model for People Movements in Urban Areas2013Conference paper (Refereed)
    Abstract [en]

    The aim of this work is to develop a new type of service for predicting and communicating urban activity. This service provides short-term predictions (hours to days), which can be used as a basis for different types of resource allocation and planning, e.g. concerning public transport, personnel, or marketing. The core of the service consists of a forecasting engine that based on a prediction model processes data on different levels of detail and from various providers. This paper explores the requirements and features of the forecast engine. We conclude that agent-based modeling seems as the most promising approach to meet these requirements. Finally, some examples of potential applications are described along with analyses of scientific and engineering issues that need to be addressed.

  • 49. Dunkel, Kalle Aid
    et al.
    Sandkuhl, Kurt
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Wißotzki, Matthias
    University of Rostock.
    Supporting Regulatory Compliance by Pattern Detection in Enterprise Models: Approach and Application2013In: Manufacturing Modelling, Management, and Control / [ed] Bakhtadze, Natalia; Chernyshov, Kirill; Dolgui, Alexandre; Lototsky, Vladimir, Elsevier, 2013, p. 987-992Conference paper (Refereed)
    Abstract [en]

    Many industries are facing a continuously changing business environment which partly is caused by new regulations and bylaws from regulating authorities. Ensuring compliance can cause substantial efforts, since conformance checks of business processes and organizational structures often have to be performed manually. The paper contributes to reducing these efforts by proposing tool support for analyzing enterprise models with the aim to use patterns for identifying potentially non-compliant parts of such models. Design patterns have been a fundamental tool for software development for many years. The approach of having predefined solutions can be beneficial for the purpose of compliance assessment as well. To this end a method to search and detect patterns within enterprise models is an important step. Based on a motivating scenario from automotive supplier industries, the paper proposes an approach and introduces a prototypical tool that finds similar matches to a given pattern by use of template matching with the normalized cross correlation as metric.

  • 50.
    Elovaara, Pirjo
    et al.
    Blekinge Tekniska Högskola, Sektionen för teknokultur, humaniora och samhällsbyggnad.
    Eriksén, Sara
    Blekinge Tekniska Högskola, Sektionen för teknokultur, humaniora och samhällsbyggnad.
    Ekelin, Annelie
    Blekinge Tekniska Högskola, Sektionen för teknokultur, humaniora och samhällsbyggnad.
    Hansson, Christina
    Blekinge Tekniska Högskola, Sektionen för teknokultur, humaniora och samhällsbyggnad.
    Nilsson, Monica
    Blekinge Tekniska Högskola, Sektionen för teknokultur, humaniora och samhällsbyggnad.
    Winter, Jeff
    Blekinge Tekniska Högskola, Sektionen för teknokultur, humaniora och samhällsbyggnad.
    Educational programs in e-government - An active, practice- and design-oriented network?2004In: 3rd International Conference on Electronic Government (EGOV 2004): Conference Proceedings, Berlin: Springer Berlin/Heidelberg, 2004, p. 457-459Conference paper (Refereed)
    Abstract [en]

    In the autumn of 2004, two higher educational programs in e-government will be starting up at Blekinge Institute of Technology in Southern Sweden. One of these is a Master’s level program, while the other is a more basic, two-year vocational education. Each will be the first of its kind in Scandinavia, and both will be offered as net-based distance education. The interdisciplinary group of researchers/teachers now developing the courses for these educational programs, in co-operation with several other research groups in Scandinavia, see this co-construction of distance education as the beginning of an active Scandinavian network of competence around higher education and ongoing research and development in the e-government area. We are currently exploring the possibilities of using distance education in this area as a way of networking around on-going e-government research and competence enhancement in Scandinavia. The Scandinavian tradition of Participatory Design, as well as ideas about e-government as constantly ongoing co-construction, have inspired us in our work with developing the new educational programs. A reference group consisting of representatives from a number of municipalities and various government agencies plays an important role in this work.

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