Abstract: There are much open Web information, which are composed of true and false information and useful and harmful information, and much information are untrustworthy. hherefore, it is more and more important how to judge the text credibility to choose the trustworthy and useful information from much Web information. This article introduced a kind of j udgment method of Web text content trust based on trust pattern verification. First, the author defined the trust pattern of Web text and described trust pattern by the formal method, then the author modeled Web text, and finally checked the Web text model to judge whether Web verification model satisfies the trust pattern, and designed the algorithm of calculating Web text trustworthy degree according to the result of model checking. Experiment proves this method is effective.

Key words: Discoursive Web text, Trust pattern, Model checking, Web trustworthy degree