Title:
HIERARCHICAL STRUCTURE DATA RETRIEVAL SYSTEM AND METHOD, AND PROGRAM RECORDING MEDIUM THERE
Document Type and Number:
Japanese Patent JP3538636
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To efficiently retrieve abstracted data by using features of the hierarchical structure of data for retrieval from a database having the hierarchical structure data.
SOLUTION: The database to be retrieved is structured so that data in a lower hierarchy of abstraction are sandwiched between pieces of data in higher hierarchies of abstraction. A retrieval key shaping part 12 shapes multiple input retrieval keys by compensating data in a layer sandwiched between the input retrieval keys when the input retrieval keys specify pieces of successive data in a layer as one of lower to higher layers. A full-text retrieval implementation part 13 performs full text retrieval from the database by using the retrieval keys.
Inventors:
Murata, Maki
Uchiyama, Masao
Isahara, Hitoshi
Uchiyama, Masao
Isahara, Hitoshi
Application Number:
JP2000326409A
Publication Date:
June 14, 2004
Filing Date:
October 26, 2000
Export Citation:
Assignee:
COMMUNICATION RESEARCH LABORATORY
International Classes:
G06F17/30; G06F12/00; (IPC1-7): G06F17/30
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