  This paper is the continuation of our research work about linguistic
truth-valued concept lattice. In order to provide a mathematical tool for
mining tacit knowledge, we establish a concrete model of 6-ary linguistic
truth-valued concept lattice and introduce a mining algorithm through the
structure consistency. Specifically, we utilize the attributes to depict
knowledge, propose the 6-ary linguistic truth-valued attribute extended context
and congener context to characterize tacit knowledge, and research the
necessary and sufficient conditions of forming tacit knowledge. We respectively
give the algorithms of generating the linguistic truth-valued congener context
and constructing the linguistic truth-valued concept lattice.
