supported by National High-Tech Research & Development Program of China (Grant No. 2007AA-01Z325);National Natural Science Foundation of China (Grant Nos. 60496326,60573063,60573064,60773059)
Formal concept analysis (FCA) and description logic (DL) are meant to be formalizations of concepts.A formal concept in the former consists of its intent and extent,where the intent is the set of all the attribute...