Patent ID: 7054860
Filing Date: 2006-05-30
Classification: G06F,Y10S

Abstract:
1. A document retrieval method, involving a series of document retrieval processes including a plurality of retrieval operations inputted by a user, comprising: a user's evaluation input step for inputting a user's evaluation of a document retrieved in a document search conducted pursuant to a search query, said user's evaluation including an evaluation as to whether the document is desirable for the user's search purpose; a search query storage step for, when updating said search query based on said evaluation, storing a search query after the update in association with the retrieval operation thereof, in addition to those search queries that have been stored in previous retrieval operations conducted before said update in said series of document retrieval processes; a search result storage step for storing a search result based on the search query after the update in addition to those search results that have been stored in previous retrieval operations conducted before said update in said series of document retrieval processes; and a search history storage step for storing information on a history of the search queries each stored in said search query storage step, information on a history of search results each stored in said search result storage step, and each of user's evaluations and each of identifiers of documents subjected to said evaluations by making a correspondence among the search query, the search result, the user's evaluation and the identifier of the document subjected to the user's evaluation; wherein a user's evaluation for a search result document is inputted in accordance with a method for setting one or more evaluation grades, the search query includes weights assigned to strings and the weight of a string is updated in accordance with a method for setting the degree of change in many grades pursuant to said evaluation.