Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
396100 | Information Sciences | 2007 | 10 Pages |
Abstract
In this paper, the definition of a variable threshold concept lattice is introduced. Based on a Galois connection, three kinds of variable threshold concept lattices, in which diverse requirements of knowledge discovery can be satisfied by adjusting a threshold, are defined. The number of formal concepts in a variable threshold concept lattice is far less than that in a fuzzy concept lattice. The three kinds of variable threshold concept lattices are constructed between two crisp sets, between a crisp set and a fuzzy set, and between a fuzzy set and a crisp set. Their properties are analogous to that of the classical concept lattices, and can be induced by the fuzzy concept lattice.
Related Topics
Physical Sciences and Engineering
Computer Science
Artificial Intelligence
Authors
Wen-Xiu Zhang, Jian-Min Ma, Shi-Qing Fan,