Information retrieving method

摘要

A keyword-based information retrieving method which accepts a group of keywords entered from a user when the user makes a request for a search, sets a particular keyword within the group of keywords entered from the user as a main keyword, sets the remaining keywords other than the main keyword as additional keywords, modifies the additional keyword having a low relativity to the main keyword to a keyword having a high relativity, and conducts a search requested by the user using the group of modified keywords.