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Fuzzy classiers are important tools in exploratory data analysis, which is a vital set of methods used in various engineering, scientic and business applications. Fuzzy classiers use fuzzy rules and do not require assumptions common to statistical classication. Rough set theory is useful when data sets are incomplete. It denes a formal approximation of crisp sets by providing the lower and the upper approximation of the original set. Systems based on rough sets have natural ability to work on such data and incomplete vectors do not have to be preprocessed before classication. To achieve better performance than existing machine learning systems, fuzzy classifiers and rough sets can be combined in ensembles. Such ensembles consist of a nite set of learning models, usually weak learners. The present book discusses the three aforementioned elds fuzzy systems, rough sets and ensemble techniques. As the trained ensemble should represent a single hypothesis, a lot of attention is placed on the possibility to combine fuzzy rules from fuzzy systems being members of classication ensemble. Furthermore, an emphasis is placed on ensembles that can work on incomplete data, thanks to rough set theory. .
- Format: Inbunden
- ISBN: 9783642306037
- Språk: Engelska
- Antal sidor: 132
- Utgivningsdatum: 2012-06-28
- Förlag: Springer-Verlag Berlin and Heidelberg GmbH & Co. K