Browsing by Author "Widmer, Gerhard"

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  • Prediction of ordinal classes using regression trees

    Kramer, Stefan; Widmer, Gerhard; Pfahringer, Bernhard; de Groeve, Michael (Springer, Berlin, 2000)
    This paper is devoted to the problem of learning to predict ordinal (i.e., ordered discrete) classes using classification and regression trees. We start with S-CART, a tree induction algorithm, and study various ways of ...
  • Searching for patterns in political event sequences: Experiments with the KEDs database

    Kovar, Klaus; Fürnkranz, Johannes; Petrak, Johann; Pfahringer, Bernhard; Trappl, Robert; Widmer, Gerhard (Taylor & Francis, 2000)
    This paper presents an empirical study on the possibility of discovering interesting event sequences and sequential rules in a large database of international political events. A data mining algorithm first presented by ...