There are some undefined concepts in nursing diagnosis.

Fuzzy concept lattices with respect to a fuzzy formal context was derived,and their hierarchical structure,fuzzy concept generated from fuzzy set and the fix point of Wille operator were discussed.

Based on the special attributes of house goods,the (ration) and fuzzy concept formed during the process of modern house function design were introduced,the interaction was analyzed,and the (ration) of every function dividing area and the index connotation of the fuzzy concept in the house function design were proposed.

Fuzziness, fuzzy concept and theory of relative membership degree are detailed based on the perspective of dialectical materialism on difference and common dimension, medium transition and two poles.

The concepts in the logics must be clear,explicit,but there also exist some misty concepts in realistic language context.

The basic theory of the calculating model, the acceleration of depreciation will establish on setting out from the misty concept, calculating the depreciation by using the method of average time limit according to the basic calculation.

Aiming at the argument that private economy is a vague concept, this article believes that the private economy in narrow sense indicates the non-public owned economy such as sole proprietorship.

Research on implementation algorithm of fuzzy concept lattices based on different implication operator;

Rapidly constructive method of fuzzy concept lattice with computer actualization;

Ⅲ Inference Based on Fuzzy Concept Lattice;