Studies of Comprehensive Auto-Indexing System Based on Key Words' Subject Degree

Key words are expressions that indicate and express the subject concept of a text, the major property of key words is to denote subject. Based on the domainal inhomogeneity and critical region of key words, subject degree is brought up and calculated by statistical model to cue textpsila subject concept. Based on key words and itspsila subject degree, constructed a comprehensive auto-indexing system, which includes text categorization, key words indexing and text summarization.