Algorithm of the Sentence Clustering Based on Feature Selection;

Frege, while founding “logical semantics”, unintentionally opened up the research of presupposition that is a subject for pragmatics today, and laid aside “three types of sentences”, which Austin, Grice and Bar-Hillel later studied and established three theories known as speech act theory, conversational implicature theory and deixis theory in Pragmatics.

The former is used in describing text content by schema and optimized rules; the latter is used in sentence pattern constructing, language resource mapping and determining text specific form according to the sentence structure class, syntactic rules and lexical information.