Patent ID: 6334130
Filing Date: 2001-12-25
Classification: G06F,Y10S

Abstract:
An apparatus for retrieving information blocks satisfying a retrieval condition inputted by a user from among information blocks stored in an information system, comprising:means for referring to retrieval data prepared and registered based on contents of information blocks in said information system, and extracting based on said retrieval data a first set of attribute information each of the attribute information representing each of information blocks matched with said retrieval condition designated by said user;means for referring to plural sets of attribute information, each set thereof consisting of attribute information of information blocks accessible by each of a plurality of groups to which said user belong, and extracting from said plural sets of attribute information a second set of attribute information each of the attribute information representing each of information blocks accessible by said groups to which said user belongs; andmeans for performing a conjunction operation between said first set of attribute information and said second set of attribute information to obtain information blocks belonging to both said first and second sets of attribute information as a retrieval result of said retrieval condition inputted by said user;wherein said information blocks are information documents, and said information documents are registered in a form of text data.