Linguistic-Valued Layered Concept Lattice with the Trust Degree.

In daily life, natural language can express uncertainty and vagueness better, so it plays an extremely significant role in reasoning and judgment. Therefore, this paper proposes the linguistic-valued formal context based on lattice implication algebra to handle the problems of linguistic values uncertain information with comparability and incomparability. Furthermore, to meet the requirements of different experts at different levels, we introduce linguistic-valued layered concept lattice with different trust degrees, which can be closed to the human thinking and avoided the lack of information. Then the corresponding model of the linguistic-valued layered concept lattice with the trust degree is given. At last, the effectiveness and practicability of this model are illustrated by an example of evaluating merit student.