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Volker Stix

ao.Univ.Prof. Mag.Dr.rer.soc.oec. Volker Stix
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CV

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Expertise

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Activities

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Publications

Journal article

2014 Kayikci, Yasanur, Stix, Volker. 2014. Causal mechanism in transport collaboration. Expert Systems with Applications 41 (4): 1561-1575. (Details)
2013 Maier, Konradin, Stix, Volker. 2013. A Semi-Automated Approach for Structuring Multi Criteria Decision Problems. European Journal of Operational Research (EJOR) 225 (3): 487-496. (Details)
  Bernroider, Edward and Koch, Stefan and Stix, Volker. 2013. A Comprehensive Framework Approach using Content, Context, Process Views to Combine Methods from Operations Research for IT Assessments. Information Systems Management 30 (1): S. 75-88. open access (Details)
2012 Maida, Martina, Maier, Konradin, Obwegeser, Nikolaus, Stix, Volker. 2012. A Multidimensional Model of Trust in Recommender Systems. Lecture Notes in Business Information Processing 123 212-219. (Details)
2011 Bernroider, Edward, Obwegeser, Nikolaus, Stix, Volker. 2011. Analysis of Heuristic Validity, Efficiency and Applicability of the Profile Distance Method for Implementation in Decision Support Systems. Computers and Operations Research 38 816-823. open access (Details)
2010 Bernroider, Edward, Koch, Stefan, Stix, Volker. 2010. Elements of Comprehensive Assessments of IT Infrastructure Projects in the Austrian Ministry of Finance. Lecture Notes in Computer Science 6267 84-91. (Details)
  Bernroider, Edward, Maier, Konradin, Stix, Volker. 2010. Incomplete Information within Relative Pairwise Comparisons as Utilized by the AHP. Lecture Notes in Business Information Processing 57 39-50. (Details)
  Bernroider, Edward, Obwegeser, Nikolaus, Stix, Volker. 2010. The Profile Distance Method: Towards more Intuitive Multi Criteria Decision Making in Information Systems. Lecture Notes in Computer Science 6261 221-230. (Details)
  Obwegeser, Nikolaus, Stix, Volker. 2010. Introducing Complex Decision Models to the Decision Maker with Computer Software - The Profile Distance Method (PDM). Journal of Systemics, Cybernetics and Informatics 8 (3): 24-28. (Details)
  Bernroider, Edward, Obwegeser, Nikolaus, Stix, Volker. 2010. Introducing Complex Decision Models to the Decision Maker with Computer Software - The Profile Distance Method (PDM). Journal of Systemics, Cybernetics and Informatics 8 (3): 24-28. (Details)
2007 Bernroider, Edward, Stix, Volker. 2007. A method using weight restrictions in data envelopment analysis for ranking and validity issues in decision making. Computers and Operations Research 34 (9): 2637-2647. (Details)
2006 Reiner, Jürgen, Stix, Volker. 2006. IT transformation decision processes: A conceptual frame-work for efficiency/effectiveness optimization. Communications of the IIMA 6 (3): 51-62. (Details)
  Bernroider, Edward, Stix, Volker. 2006. On the Applicability of Data Envelopment Analysis for Multiple Attribute Decision Making in the Context of Information System Appraisals. Communications of the IIMA 6 (2): 107-118. (Details)
  Bernroider, Edward, Stix, Volker. 2006. Profile distance method - a multi-attribute decision making approach for information system investments. Decision Support Systems 42 (2): 988-998. (Details)
2005 Dür, Mirjam, Stix, Volker. 2005. Probabilistic subproblem selection in branch-and-bound algorithms. Journal of Computational and Applied Mathematics 182 (1): 67-80. (Details)
2004 Stix, Volker. 2004. Finding All Maximal Cliques in Dynamic Graphs. Computational Optimization and Applications, 27, 2, 173-186 (Details)
2003 Stix, Volker. 2003. Target-Oriented Branch and Bound Method for Global Optimization. Journal of Global Optimization, 26, 261-277 (Details)
1999 Bomze, I. M., Pelillo, M., Stix, Volker. 1999. Approximating the maximum weight clique using replicator dynamics. IEEE Transactions on Neural Networks, 11(6), 1228-1241 (Details)
  Bomze, I. M., Stix, Volker. 1999. Genetic engineering via negative fitness: Evolutionary dynamics for global optimization. Annals of Oper. Res., 89 , 297-318 (Details)

Chapter in edited volume

2008 Bernroider, Edward, Koch, Stefan, Stix, Volker. 2008. Das Public IT Assessment Framework. In: Evaluierung von öffentlichen IT-Investitionen, Hrsg. Promberger/Janko/Ihle, 97-132. Wien: NWV Neuer Wiss.Verl.. (Details)
  Bernroider, Edward, Koch, Stefan, Stix, Volker. 2008. Rahmenmodelle und Methoden zur Messung des Nutzens von IT-Investitionen. In: Evaluierung von öffentlichen IT-Investitionen, Hrsg. Promberger/Janko/Ihle, 33-95. Wien: NWV Neuer Wiss.Verl.. (Details)
2004 Janko, W.H., Stix, V.. 2004. Modelle zur Lernfortschrittskontrolle im E-Learning. In: Riedl, René, Auinger, Thomas (Hrsg.): Herausforderungen der Wirtschaftsinformatik. 179-191, Deutscher Universitäts-Verlag, Wiesbaden (Details)

Contribution to conference proceedings

2014 Bernroider, Edward and Obwegeser, Nikolaus and Stix, Volker. 2014. Dissemination and Impact of Multi-criteria Decision Support Methods for IT Project Evaluation. In Proceedings of the 47th Annual Hawaii International Conference on System Sciences, Hrsg. Computer Society Press, S. 1103-1112. Hawaii: Computer Society Press. (Details)
2013 Maida, Martina, Maier, Konradin, Obwegeser, Nikolaus, Stix, Volker. Erscheinend. Success of Multi Criteria Decision Support Systems: The Relevance of Trust. In 2013 46th Hawaii International Conference on System Science (HICSS), Hrsg. (Details)
2012 Maida, Martina, Maier, Konradin, Obwegeser, Nikolaus, Stix, Volker. 2012. The effect of sensitivity analysis on the usage of recommender systems. In Proceedings of the 2nd Workshop on Human Decision Making in Recommender Systems in conjunction with the 6th ACM conference on Recommender Systems (RecSys 2012), Hrsg. de Gemmis, M., Felfernig, A., Lops, P., Ricci, F., Semeraro, G. and Willemsen, M., 15-18. Dublin, Ireland: (Details)
2011 Maida, Martina, Maier, Konradin, Obwegeser, Nikolaus, Stix, Volker. 2011. Explaining MCDM acceptance: a conceptual model of influencing factors. In Proceedings of the Federated Conference on Computer Science and Information Systems, Hrsg. IEEE Digital Library, 297-303. Szczecin, Polen: open access (Details)
2010 Bernroider, Edward, Obwegeser, Nikolaus, Stix, Volker. 2010. The Profile Distance Method: Towards More Intuitive Multiple Criteria Decision Making in Information Systems. In Database and Expert Systems Applications, Hrsg. Pablo Garcia Bringas, Abdelkader Hameurlain, Gerald Quirchmayr, 221-230. University of Deusto, Bilbao, Spain: Springer Lecture Notes in Computer Science (LNCS). (Details)
2009 Bernroider, Edward, Obwegeser, Nikolaus, Stix, Volker. 2009. Introducing Complex Decision Models to the Decision Maker with Computer Software - The Profile Distance Method (PDM). In Proceedings of the 3rd International Conference on Knowledge Generation, Communication and Management, Hrsg. KGCM, 1-15. Orlando, Florida, US: (Details)
  Pucher, Hannes, Stix, Volker. 2009. Comparison of Nonlinear Optimization Methods on a Multinomial Logit-Model in R. In Proceedings of the IMETI, Hrsg. IIIS, 162-166. Florida: (Details)
  Bernroider, Edward, Obwegeser, Nikolaus, Stix, Volker. 2009. Introducing Complex Decision Models to the Decision Maker with Computer Software – The Profile Distance Method (PDM). In Proceedings of the IMETI, Hrsg. IIIS, 68-72. Florida: (Details)
2008 Koch, Stefan, Stix, Volker. 2008. Open Source Project Categorization Based on Growth Rate Analysis and Portfolio Planning Methods. In Open Source Development, Communities and Quality, Hrsg. WCC 2008, 375-380. New York: Springer. (Details)
2005 Janko, Wolfgang, Stix, Volker. 2005. Usage of the iso-knowledge curve and an information system for block wise testing. In Proceedings of Training, Education & Simulation International, Hrsg. TESI, 23-27. Phoenix: (Details)
2004 Stix, Volker. 2004. A Branch and Bound Method for Optimal Scenario Tree Reduction. Proceedings of the 22nd conference on Mathematical Methods in Economics 2004 (Details)
  Bernroider, Edward, Stix, Volker. 2004. Enrichment of a Utility Ranking Method Using Data Envelopment Analysis - a Case Study of an ERP Selection Problem. Proceedings of the IRMA 2004 (Details)
  Bernroider, Edward, Stix, Volker. 2004. Factors affecting the Type and Extent of Co-operation between Software Firms: An Economic Perspective. Proceedings of the IRMA 2004 (Details)
  Reiner, Jürgen, Stix, Volker. 2004. IT Appraisal Methods and Methodologies - A critical literature review. Proceeding of the IRMA 2004 (Details)
2003 Bernroider, Edward, Hahsler, Michael, Koch, Stefan, Stix, Volker. 2003. Data Envelopment Analysis zur Unterstützung der Auswahl und Einführung von ERP-Systemen. In: Geyer-Schulz, Andreas, Taudes, Alfred (Hrsg.): Informationswirtschaft: Ein Sektor mit Zukunft. Lecture Notes in Informatics (LNI), 11-26 (Details)
  Stix, Volker, Uren, Victoria. 2003. Semantic Structuring of Concepts Found in Scholarly Literature: An Empirical Study Using a Fuzzy Clustering Approach. Proceedings of the SCI 2003 (Details)
  Bernroider, Edward, Stix, Volker. 2003. The Evaluation of ERP Systems Using Data Envelopment Analysis. Proceeding of the IRMA 2003 (Details)

Paper presented at an academic conference or symposium

2011 Kayikci, Yasanur, Stix, Volker. 2011. Developing a Strategic Alignment Framework for Heterarchical Transport Collaboration Networks. 2nd Workshop on Young Academics' Management Science - YAMS, Graz, Österreich, 02.12.-03.12.. (Details)
  Kayikci, Yasanur, Stix, Volker. 2011. Understanding Influence Factors of System Structure in Transport Collaboration by Group Decision Support. Techno- Ökonomie- Forum 10. Forschungskolloquium, Graz, Österreich, 29.11.. (Details)
2010 Bernroider, Edward, Obwegeser, Nikolaus, Stix, Volker. 2010. The Profile Distance Method: Towards More Intuitive Multiple Criteria Decision Making in Information Systems. 21st International Conference, DEXA 2010, University of Deusto, Bilbao, Spanien, 30.08.2010-03.09.2010. (Details)
2009 Stix, Volker. 2009. Comparison of Nonlinear Optimization Methods on a Multinomial Logit-Model in R. World Multi-Conference on Systemics, Cybernetics and Informatics, Orlando, Vereinigte Staaten/USA, 09.07-12.07. (Details)
  Stix, Volker. 2009. Introducing Complex Decision Models to the Decision Maker with Computer Software – The Profile Distance Method (PDM). World Multi-Conference on Systemics, Cybernetics and Informatics, Orlando, Vereinigte Staaten/USA, 09.07-12.07. (Details)
2008 Stix, Volker. 2008. Open Source Project Categorization Based on Growth Rate Analysis and Portfolio Planning Methods. OSS 2008, Mailand, Italien, 07.09.-10.09.. (Details)
2006 Stix, Volker, Reiner, Jürgen. 2006. IT transformation decision processes: A conceptual frame-work for efficiency/effectiveness optimization.. IIMA, New York, Vereinigte Staaten/USA, Okt.. (Details)
  Bernroider, Edward, Stix, Volker. 2006. On the Applicability of Data Envelopment Analysis for Multiple Attribute Decision Making in the Context of Information System Appraisals. IIMA, New York, Vereinigte Staaten/USA, Okt.. (Details)
2005 Stix, Volker. 2005. The usage of (hyper-)graphs for modeling complex relations. International Workshop on Semanitc Engineering, Leipzig, Deutschland, July. (Details)
  Janko, Wolfgang, Stix, Volker. 2005. Usage of the iso-knowledge curve and an information system for block wise testing. Testing, Education and Simulation International, Maastricht, Niederlande, March. (Details)
  Stix, Volker. 2005. Variations of branch and bound methods. Workshop of Algorithms in OR, Linz, Österreich, September. (Details)
2004 Stix, Volker. 2004. A Branch and Bound Method for Optimal Scenario Tree Reduction. 22nd international conference on Mathematical Methods in Economics 2004 (Details)
  Bernroider, Edward, Stix, Volker. 2004. Enrichment of a Utility Ranking Method Using Data Envelopment Analysis - a Case Study of an ERP Selection Problem. IRMA 2004 (Details)
  Bernroider, Edward, Stix, Volker. 2004. Factors affecting the Type and Extent of Co-operation between Software Firms: An Economic Perspective. IRMA 2004 (Details)
  Reiner, Jürgen, Stix, Volker. 2004. IT Appraisal Methods and Methodologies - A critical literature review. IRMA 2004 (Details)
2003 Bernroider, Edward, Hahsler, Michael, Koch, Stefan, Stix, Volker. 2003. Data Envelopment Analysis zur Unterstützung der Auswahl und Einführung von ERP-Systemen. Fachtagung 'Informationswirtschaft: Ein Sektor mit Zukunft', WU-Wien, September (Details)
  Stix, Volker, Uren, Victoria. 2003. Semantic Structuring of Concepts Found in Scholarly Literature: An Empirical Study Using a Fuzzy Clustering Approach. SCI 2003 (Details)
  Bernroider, Edward, Stix, Volker. 2003. The Evaluation of ERP Systems Using Data Envelopment Analysis. IRMA 2003 (Details)
2002 Stix, V.. 2002. Fuzzy clustering using dynamic graphs. Invited talk at the scolonto semantic web seminar, Open University, June, Milton Keynes, UK (Details)
2001 Stix, Volker. 2001. Approximation of the MCP with target oriented branch and bound. Refereed conference paper at MAX-CLIQUE01, May/June, Klagenfurt (Details)
  Stix, Volker. 2001. Stochastic branch and bound using a target oriented branch and bound approach. Refereed conference paper at SP01, August, Berlin (Details)
2000 Stix, Volker. 2000. Target oriented branch and bound for the maximum clique problem. Refereed paper at the International Workshop on Statistical Mechanics and Graph Theory, May, Triest, Italy (Details)
1999 Stix, Volker. 1999. Approximating the maximum weight clique problem using replicator dynamics. Refereed conference paper at the International Conference on Global Optimization, September, Florence, Italy (Details)
1997 Stix, Volker. 1997. Implementation details using replicator dynamics. MAX-CLIQUE97, June, Triest, Italy (Details)

Working/discussion paper, preprint

2002 Dür, M., Stix, V.. 2002. Probabilistic Subset Selection in Branch-and-Bound Algorithms. Forschungsbericht Nr. 80 des Instituts für Statistik der WU Wien (Details)
2001 Stix, Volker. 2001. Finding All Maximal Cliques in Evolving Graphs. Department of Information Business, Technical Report, TR02/2002, Vienna University of Economics (Details)
  Stix, Volker. 2001. Stochastic branch and bound applying target oriented branch and bound method to optimal scenario tree reduction. Department of Information Business, Technical Report, TR03/2002, Vienna University of Economics (Details)
  Stix, Volker. 2001. Target Oriented Branch and Bound Method for Global Optimization. Department of Information Business, Technical Report, TR01/2002, Vienna University of Economics (Details)

Research report, expert opinion

2001 Stix, Volker. 2001. Design issues for a Catastrophic-Flood-Bond for the City of Vienna. Department of Statistics and Decision Support Systems, University of Vienna (Details)

Textbook

2006 Bernroider, Edward, Stix, Volker. 2006. Grundzüge der Modellierung. 2. erweiterte Auflage. Wien: Facultas. (Details)
2004 Bernroider, Edward, Stix, Volker. 2004. Grundzüge der Modellierung. Wien: Facultas. (Details)

Dissertation

2000 Stix, Volker. 2000. Global optimization of standard quadratic problems including parallel approaches. Ph.D. Thesis, University of Vienna (Details)

Diploma thesis

1997 Stix, Volker. 1997. The Maximum Clique Problem - A Fresh Approach: Empirical Evidence and Implementation in C++. Diploma Thesis, University of Vienna (Details)

Unpublished lecture

2009 Stix, Volker. 2009. Visualization of Complex Selection Problems. Invited Talk, Dallas, 24.07. (Details)
  Stix, Volker. 2009. Easy applications for complex selection problems. Invited Talk, Istanbul, 02.04. (Details)
  Stix, Volker. 2009. Introducing Complex Decision Models to the Decision Maker. Invited Talk, Münster, 12.03. (Details)
  Stix, Volker. 2009. Weitläufigkeit von BI Anwendungen. Workshop, Wien, 12.02. (Details)
2007 Stix, Volker, Pucher, Hannes. 2007. Potentials of R-Libraries for non-linear optimization problems. Workshop, Wien, 04.05. (Details)
  Stix, Volker. 2007. Einsatzmöglichkeiten von OR-Methoden im e-Tourismus. Präsentation, Innsbruck, 13.02. (Details)
2006 Taudes, Alfred, Stix, Volker. 2006. SAP & ROI. Tagung der SAP Public Sector User Group Austria, Wien, 27.04. (Details)

Projects

2010
High Acceptance Multi Criteria Decision Making (2010-2012) (Details)
2006
FLOSSMETRICS (2006-2009) (Details)
Public IT Assessment Framework (2006-2008) (Details)