초록 ▼

A user views search results and subjectively determines if a document is desirable or undesirable. Only documents categorized by the user are analyzed for deriving a list of prospective keywords. The frequency of occurrence of each word of each document is derived. Keywords that occur only in desira

A user views search results and subjectively determines if a document is desirable or undesirable. Only documents categorized by the user are analyzed for deriving a list of prospective keywords. The frequency of occurrence of each word of each document is derived. Keywords that occur only in desirable documents are good keywords. Keywords that occur only in undesirable documents are bad keywords. Keywords that occurs in both types are dirty keywords. The best keywords are the good keywords with the highest frequency of occurrence. The worst keywords are the bad keywords with the highest frequency of occurrence. A new query phrase includes the highest ranked good keywords and performs filtering using the highest ranked bad keywords. Key phrases are derived to clean dirty keywords into good key phrases. A key phrase also is derived from a good keyword and replaces the good keyword to narrow a search.

대표청구항 ▼

[ What is claimed is:] [1.] A method for refining an initial query phrase to search for documents of interest to a user, comprising the steps of:categorizing at least one document found in a search using the initial query phrase as of interest based upon feedback from the user;categorizing at least

[ What is claimed is:] [1.] A method for refining an initial query phrase to search for documents of interest to a user, comprising the steps of:categorizing at least one document found in a search using the initial query phrase as of interest based upon feedback from the user;categorizing at least one other document found in the search using the initial query phrase as not of interest based upon feedback from the user;generating a list of keywords by analyzing only the categorized documents;ranking as first keywords, the keywords in the list of keywords which occur in only the documents of interest;ranking as second keywords, the keywords in the list of keywords which occur in only the documents not of interest;forming a refined query phrase to search for documents which include one or more of a plurality of the highest ranked first keywords, and to filter out documents which include any one or more of a plurality of the highest ranked second keywords.