Patent ID: 6845354

Claim:
An information retrieval system for finding corresponding information components according to an entered query word, comprising: a synonym block for finding indexed keywords according to the query word; an information indexing block for finding a corresponding information component based on the indexed keywords; and a component ranking-filtering block for ranking and filtering the found information components and for outputting the information components for selection; wherein the synonym block comprises: encoding means for encoding the query word and generating an encoded pattern of the query word, the encoded pattern of the query word corresponding to a feature of the query word; similarity means for comparing the encoded pattern of the query word with the encoded patterns of system synonyms, the latter generated by encoding a plurality of system synonyms, and generating corresponding similarity values, the similarity values representing the similarity between the query word and the system synonyms, each of the system synonyms corresponding to at least one of the system keywords, respectively; and correlation means for selecting the indexed keywords from the system keywords according to correlation values between the system synonyms and the system keywords, the similarity values generated by the similarity means and a predetermined threshold value for comparison.