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Dr. Stephan Dlugosz

Labour Markets, Human Resources and Social Policy

Stephan Dlugosz studied Business Informatics at the University of Muenster. After having obtained his Master of Science in Information Systems, he worked as a researcher and postgraduate in the sector of Quantitative Methods in Information Systems at the Department of Information Systems at the University of Muenster. In 2008 he completed his doctorate, writing a thesis on the topic "Multi-Layer Perceptron Networks for Ordinal Data Analysis - Order Independent Online Learning by Sequential Estimation". Since October 2008 he works in the research department "Labour Markets, Human Resources and Social Policy" at the Centre for European Economic Research. His main area of research is statistical fault modelling in order to improve the analysis of administrative job market data.

Selected Publications

Publications in refereed Journals

Dlugosz, Stephan, Gesine Stephan and Ralf Wilke (forthcoming), Fixing the leak: Unemployment incidence before and after a major reform of unemployment benefits in Germany, German Economic Review.

Dlugosz, Stephan and Ulrich Müller-Funk (2009), The value of the last digit: statistical fraud detection with digit analysis, Advances in Data Analysis and Classification 3, 281-290. Download

Monographs, Articles in Anthologies

Dlugosz, Stephan (2010), Factor Selection in Observational Studies -- An Application of Nonlinear Factor Selection to Propensity Scores, in: Hermann Locarek-Junge, Claus Weihs, Classification as a Tool for Research, Proceedings of the 11th IFCS Biennial Conference and 33rd Annual Conference of the Gesellschaft für Klassifikation e.V., Dresden, March 13-18, 2009, Studies in Classification, Data Analysis, and Knowledge Organization Berlin-Heidelberg-New York, 361-369.

Dlugosz, Stephan and Ulrich Müller-Funk (2009), Predictive Classification Trees, in: Fink, A.; Lausen, B.; Seidel, W.; Ultsch, A., Advances in Data Analysis, Data Handling and Business Intelligence, Studies in Classification, Data Analysis, and Knowledge Organization 127--134.

Müller-Funk, Ulrich and Stephan Dlugosz (2008), Benford Analyse - Einfachheit oder Schlichtheit?, in: Jan vom Brocke, Jörg Becker, Einfachheit in Wirtschaftsinformatik und Controlling, München.

Dlugosz, Stephan (2008), Multi-layer Perceptron Networks for Ordinal Data Analysis, Advances in Information Systems Bd. 37, Logos, Berlin.

Ciechanowicz, Philipp, Stephan Dlugosz, Herbert Kuchen and Ulrich Müller-Funk (2008), Exploiting Training Example Parallelism With a Batch Variant of the ART 2 Classification Algorithm, in: Proceedings of the IASTED International Conference on Parallel and Distributed Computing and Networks 2008 (PDCN), 195-201.

Discussion Papers and Working Papers

Dlugosz, Stephan and Ulrich Müller-Funk (2012), Ziffernanalyse zur Betrugserkennung in Finanzverwaltungen – Prüfung von Kassenbelegen, Arbeitsberichte des Instituts für Wirtschaftsinformatik, 133, Münster.

Dlugosz, Stephan (2011), Clustering Life Trajectories - A New Divisive Hierarchical Clustering Algorithm for Discrete-valued Discrete Time Series, ZEW Discussion Paper No. 11-015, Mannheim. Download

Dlugosz, Stephan (2011), Combined Stochastic and Rule-based Approach to Improve Regression Models with Mismeasured Monotonic Covariates Without Side Information, ZEW Discussion Paper No. 11-013, Mannheim. Download

Dlugosz, Stephan, Gesine Stephan and Ralf Wilke (2009), Fixing the Leak: Unemployment Incidence Before and After the 2006 Reform of Unemployment Benefits in Germany, ZEW Discussion Paper No. 09-079, Mannheim. Download