| 摘要 |
<p>PROBLEM TO BE SOLVED: To output a retrieval result having less retrieval leakage and retrieval noise in an information retrieval system.SOLUTION: An information retrieval system 1 comprises: a technology classification database 31 storing technology fields, technology ranges (themes) belonging to the fields and technology characteristics (terms) for each theme; a technology content database 35 accumulating technology contents; an input character string acquisition part 11 acquiring an input character string from a retriever; a conceptualization part 15 collating the input character string with the terms stored in the technology classification database 31, extracting themes including matched terms, specifying one theme from among the extracted themes, and extracting a term group including the specified theme; a content search part 17 performing text search on the technology content database 35 using the term group as a keyword, and acquiring a technology content having a good evaluation; and a content display part 19 outputting display data for displaying the acquired technology content.</p> |
