Heuristic Search-Based Stacking of Classifiers

Heuristic Search-Based Stacking of Classifiers

Agapito Ledezma, Ricardo Aler, Daniel Borrajo
Copyright: © 2002 |Pages: 14
DOI: 10.4018/978-1-930708-26-6.ch004
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Currently, the combination of several classifiers is one of the most active fields within inductive learning. Examples of such techniques are boosting, bagging and stacking. From these three techniques, stacking is perhaps the least used one. One of the main reasons for this relates to the difficulty to define and parameterize its components: selecting which combination of base classifiers to use and which classifiers to use as the meta-classifier. The approach we present in this chapter poses this problem as an optimization task and then uses optimization techniques based on heuristic search to solve it. In particular, we apply genetic algorithms to automatically obtain the ideal combination of learning methods for the stacking system.

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