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Please use this identifier to cite or link to this item: http://hdl.handle.net/2451/27768
Title: Aggregation-Based Feature Invention and Relational Concept Classes
Authors: Perlich, Claudia
Provost, Foster
Keywords: Relational learning;aggregation;Feature Construction;Constructive induction;Propositionalization
Issue Date: 24-Aug-2003
Publisher: SIGKDD
Citation: In Proceedings of the Ninth SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD-2003).
Series/Report no.: CeDER-PP-2003-03
Abstract: Model induction from relational data requires aggregation of values of attributes of related entities. This paper makes three contributions to the study of relational learning.(1) It presents a hierarchy of relational concepts of increasing complexity, using relational schema characteristics such as cardinality, and derives classes of aggregation operators that are needed to learn these concepts. (2) Expanding one level of the hierarchy, it introduces new aggregation operators that model the distribution of the values to be aggregated and (for classification problems) the differences in these distributions by class. (3) It demonstrates empirically on a noisy business domain that more-complex aggregation methods can increase generalization performance. Constructing features using target-dependent aggregations can transform relational prediction tasks so that well-understood feature-vector-based modeling algorithms can be applied successfully.
URI: http://hdl.handle.net/2451/27768
Appears in Collections:CeDER Published Papers

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