Journal
INFORMATION SCIENCES
Volume 185, Issue 1, Pages 114-127Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ins.2011.09.023
Keywords
Galois connection; Object-attribute data; Formal concept analysis; Frequent itemset mining
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Funding
- Czech Science Foundation [P103/10/1056, P202/10/P360]
- [MSM 6198959214]
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Fixpoints of Galois connections induced by object-attribute data tables represent important patterns that can be found in relational data. Such patterns are used in several data mining disciplines including formal concept analysis, frequent itemset and association rule mining, and Boolean factor analysis. In this paper we propose efficient algorithm for listing all fixpoints of Galois connections induced by object-attribute data. The algorithm, called FCbO, results as a modification of Kuznetsov's CbO in which we use more efficient canonicity test. We describe the algorithm, prove its correctness, discuss efficiency issues, and present an experimental evaluation of its performance and comparison with other algorithms. (C) 2011 Elsevier Inc. All rights reserved.
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