| 摘要 |
PROBLEM TO BE SOLVED: To provide a content retrieval device for widely retrieving content relevant to a character string. SOLUTION: This content retrieval device is provided with a content storage means for storing a plurality of content relevant to one or more character strings; a thesaurus storage means for storing a thesaurus including vertical relation information showing the vertical relation of mutual character strings to be determined on the basis of the meaning of the character string; an input means to which the character string is input; an extraction means for extracting a relevant character string relevant to the input character string input by the input means on the basis of relevance information in which the relevance of the mutual character strings included in the thesaurus is expressed with a numeric value to be determined according to the vertical relation information showing the vertical relation of the mutual characters by using the thesaurus stored by the thesaurus storage means; and a retrieval means for retrieving content relevant to the relevant character string extracted by the extraction means and the input character string from among content stored by the content storage means. COPYRIGHT: (C)2009,JPO&INPIT
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