| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To perform similarity retrieval even to a retrieval target document written in a natural language different from an inputted similarity-retrieving keyword or similarity-retrieving document. <P>SOLUTION: This multi-language similar document retrieval device previously calculates a concept vector of a word to n (n≥2) pieces of natural languages in each natural language, and stores it into a word concept base. The multi-language similar document retrieval device previously calculates a concept vector of a retrieval target document to a retrieval target document group by use of the word concept base to the natural language written with the retrieval target document, and stores it into a retrieval target document concept base. When an input key is inputted, the multi-language similar document retrieval device translates it into another natural language, creates a translation key, calculates an input document translation concept vector to the created translation key by use of the word concept base to each natural language, compares the input translation concept vector and the concept vector of the retrieval target document of the retrieval target document concept base to each natural language, and calculates similarity. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
