| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize a new definition method of related words. <P>SOLUTION: An information retrieval device (for example, an administrative server 100) retrieving service information about facilities, etc. corresponding to a designated character string from a prescribed information group (for example, information on the Internet) which is a retrieval object, performs following steps; acquiring a retrieval character string used for retrieval of variety of information; registering the acquired retrieval character string in a prescribed storage device (for example, a retrieval character string information administrative DB 21); determining a relation level between multiple registered retrieval character strings based on a registration frequency (for example, a retrieval frequency); specifying an associative character string which is a character string satisfying a prescribed condition of the relation level for the acquired retrieval character string (for example, one with the highest relation level); and outputting the specified association character string (for example, sending the association character string to a client terminal). <P>COPYRIGHT: (C)2012,JPO&INPIT |
