| 摘要 |
<p>A method for searching a database of an information retrieval system (fig. 3) in response to a query having at least one query word with a part of speech, for applying the query word to the database (142a) and selecting information from the database according to the query word. A semantic network (142d) is provided for determining expansion words to expand the search of the database in response to said query word. Part of speech (710-720) of the selected query word is determined. The selected query word (850) is applied to the semantic network (142d) to provide a query expansion word in response to the selected query word. The part of speech of the query expansion word is determined. The query expansion word is applied to the database (142a) in accordance with the part of speech of the selected query word and the part of speech of the query expansion word.</p> |
