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Search-based Class Discretization by Luís Torgo; João Gama is a book available to read on EtoBox.

What is Search-based Class Discretization about?

We present a methodology that enables the use of classification algorithms on regression tasks. We implement this method in system RECLA that transforms a regression problem into a classification one and then uses an existent classification system to solve this new problem. The transformation consists of mapping a continuous variable into an ordinal variable by grouping its values into an appropriate set of intervals. We use misclassification costs as a means to reflect the implicit ordering among the ordinal values of the new variable. We describe a set of alternative discretization methods and, based on our experimental results, justify the need for a search-based approach to choose the best method. Our experimental results confirm the validity of our search-based approach to class discretization, and reveal the accuracy benefits of adding misclassification costs.

Author

Luís Torgo; João Gama

Publisher

Springer Berlin Heidelberg : Imprint: Springer

Published

1997

Language

EN

ISBN

9783540687085

Subjects

Computer Science, Science, Mathematics