The incomplete formal context is commonly used in formal concept analysis to show in-complete date.It can reflect three different relationships between object and attribute:"possessing","not possessing"and"not sure whether the object possessing the attribute".Under the framework of concept reduction,this paper proposes the three-way approximate concept reduction theory of in-complete formal context from the perspectives of object-induced three-way approximate concepts and attribute-induced three-way approximate concepts.Furthermore,by introducing the three-way approx-imate representative concept matrix and the three-way approximate representative concept functions,a method for calculating all of the three-way approximate concept reducts of an incomplete formal context is provided.
维普
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