| 摘要 |
<p>A device for extracting a keyword corresponding to a search word comprises a search word receiving unit which receives the search word from a user terminal; a document collecting unit which collects a plurality of documents comprising the received search word from an external device; a frequent noun extracting unit which extracts the predetermined number of frequent nouns among the nouns included in the collected documents from the collected documents; a weighted value determining unit which analyzes the collected documents for the frequent nouns and the maximal frequent noun and determines a weighted value for each frequent noun; an effectiveness determining unit which determines the effectiveness for each frequent noun based on the determined weighted value; and a keyword extracting unit which determines the effective frequent nouns as the keyword for the search word based on an effectiveness determining result. The device for extracting the keyword is provided to extract a plurality of keywords related to the search word inputted from the user terminal, thereby improving user convenience.</p> |
