Decision making with linguistic information is a research hotspot now. This paper introduces a linguistic truth-valued concept lattice based on lattice-valued logic for dealing with decision making under uncertain linguistic information. For dealing with the different linguistic terms more formally, a unified set of linguistic terms is defined according to the features of linguistic terms, and this set is verified to be a bounded lattice and then to be a lattice implication algebra through the definitions of relevant operations on it. Based on the unified set of linguistic terms, a linguistic truth-valued formal context as the premise of linguistic truth-valued concept lattice is defined and the linguistic truth-valued decision method is provided.
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