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Formal concept analysis has been applied as a tool for knowledge expression and acquisition. However, the huge concept lattice makes the hidden knowledge difficult to understand. This paper proposes a method to compress a concept lattice using K-means clustering. Firstly, the similarity measure between formal concepts is obtained through the importance degree of each attribute and object, and then,...
Formal decision context is a formal context with condition attributes and decision attributes, it is a generalization of formal context. For a weakly consistent formal decision context, we propose two methods to compress the condition lattice based on two new formal contexts, M-T class context and M-T extent context, respectively. These two compression methods are both based on decision lattice, and...
This paper firstly discusses the relationship between attribute concepts and join-irreducible elements of an object oriented concept lattice, based on which, all the join-irreducible elements of the object oriented concept lattice can be found. And then, we obtain the attribute characteristic judgment theorems and corresponding algorithm from the viewpoint of join-irreducible elements.
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