System for automatically generating television program labels

The invention provides a system for automatically generating television program labels, which comprises a program information obtaining module used for grasping pages relevant to each program, pruning and filtering the pages and obtaining subject content of the program information, an information keyword extracting module used for summarizing the subject content and extracting keywords from the subject content, a knowledge base module used for establishing network relationships among entries and expanding the obtained key words, a keyword expanding module used for expanding the keywords to obtain a larger entry set by utilizing a network provided by the knowledge base module, and a label generating module used for processing the obtained key entry set of the keywords, filtering noise of the key entry set, computing the score of the key entry set and generating program label sets. The system has the advantages that the blank in the systems for automatically generating television program labels is filled; due to the introduction of a knowledge base, the system is not restricted to the network pages, has high expansibility and can better find out the labels; and the knowledge base can be established in an off-line manner, and a label generating algorithm is concise, so that the efficiency of the system is high.