Jerzy Stefanowski

Main information

• My research interests
• Recent publications (with pdf files)
• More complete list of my publications
• Curriculum Vitae
• Teaching activities - for my students (In Polish!) Some of my last courses:
•     Machine Learning (In Polish! "Uczenie maszynowe i sieci neuronowe"),
            Coursebook on Machine Learning (In Polish! Podręcznik - skrypt "Uczenie maszynowe i sieci neuronowe" drugie wydanie)
  
•     Zaawansowana eksploracja danych (Advanced Issues of Data Mining -- dla specjalnosci TPD semestr 2 / also in Polish!)    
•     Introduction to Data Mining and Advanced Data Analysis   (Spec. Software Engineering / this course is offered in English language only!)    
• Medical Informatics (In Polish! Zastosowania informatyki w medycynie / together with Krzysztof Krawiec).
• Tutorials on Data Mining - ALGODEC COST project
• CFP: Combined Learning Methods and Mining Complex Data; Special Session at RSCTC'2010

Other WWW links

• Laboratory of Intelligent Decision Support Systems
• Institute of Computing Science at Poznan University of Technology
• Faculty of Computing and Management at PUT
• About my town - Poznan or Poznan MIM

Research Interests:

Machine learning and data mining. Proces of knowledge discovery. Induction of decision rules, classification trees. Mutliple classifiers (ensembles). Handling imbalanced data. Data pre-processing, in particular attribute selection and discretization methods. Mining asociation rules and sequence patterns. Data streams. Document clustering. Web-mining and text mining. Rough set theory. Applications in medicine, technical diagnostics, financial and management problems.

Major results are concerned with:

• induction of various types of decision rules for discovery and classification systems,
• creating multiple classifiers, including generalizations of bagging and pairwise coupling (multi-class n2-classifier)
• improving prediction of the minority class while learning from imbalance data,
• attribute selection for classification systems,
• handling numerical data in machine learning and data mining algorithms,
• descriptive clustering of text documents and Web pages,
• mining multi-dimensional, context sequence patterns,
• rough set theory and rough set based learning systems,
• generalized rough set approach to handle incomplete data tables,
• fuzzy-rough sets generalizations,
• application of machine learning and knowledge discovery approaches to medical data analysis,
  technical diagnostics, pattern recognition and financial analysis,

Other Scientific Activities:

• Member of Program Committees for conferences like: RSCTC (all editions); ISMIS 2009, 2008; ECML/PKDD 2008, 2007; DaWaK 2008, 2007, 2006; RSKT 2009, 2007; KNWS (since 2006); ICAISC 2008, 2006; RSEISP 2007; TPD 2007, 2005; Mini-Euro 2005; RSFDGrC 2003; IDDM-2002; SDP 2002; JSAI 2001 and others in the past.
• One of PC Chairs for JRS 2007, Toronto.
• Reviewed papers for journals like Information Sciences, ACM Transactions on Knowledge Discovery in Data, Journal of Knowledge and Information Systems, Journal of Intelligent Information Systems, Transactions on Rough Sets (Member of the Editorial Board), IEEE Transactions on Fuzzy Systems, Journal of Hybrid Intelligent Systems, Journal of Applied Intelligence, Journal of Multiple Criteria Decision Analysis, European Journal of Operational Research, Fundamenta Informaticae, Computational Management Science, Int. Journal of Intelligent Systems in Accounting Finance and Management, Computational Intelligence, Pattern Recognition Letters and FCDS (Previous Secretary of the Editorial Board) + many others.
• Reviewer of 15 Ph.D Theses and Habilitations.
• Research Supervision:
  • Current Supervision of Ph.D. Students: Magdalena Deckert, Krystyna Napierala
    
  • Past Supervision of Ph.D. Theses:
        Dawid Weiss: „Descriptive Clustering as a Method for Exploring Text Collections” (defended Oct 13, 2006)
        Radoslaw Ziembinski: „Mining Context based Sequential Patterns” (defended Sept 23, 2009)
  • I have been a supervisor of 51 Master Theses since 1994.

Contact

• call phone: +48 61 6652933 (my office)
• send a fax: +48 61 8771525,
• send me an e-mail message,
• or visit me at my office at the Institute of Computing Science - it is room 8 located in the building of the New Lecture Center of Poznan University of Technology.