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Erschienen in:
2005 | OriginalPaper | Buchkapitel
Formal Concept Analysis Constrained by Attribute-Dependency Formulas
verfasst von : Radim Bělohlávek, Vladimír Sklenář
Erschienen in: Formal Concept Analysis
Verlag: Springer Berlin Heidelberg
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An important topic in formal concept analysis is to cope with a possibly large number of formal concepts extracted from formal context (input data). We propose a method to reduce the number of extracted formal concepts by means of constraints expressed by particular formulas (attribute-dependency formulas, ADF). ADF represent a form of dependencies specified by a user expressing relative importance of attributes. ADF are considered as additional input accompanying the formal context 〈
X
,
Y
,
I
〉. The reduction consists in considering formal concepts which are compatible with a given set of ADF and leaving out noncompatible concepts. We present basic properties related to ADF, an algorithm for generating the reduced set of formal concepts, and demonstrating examples.