Inventor
TOKUNAGA MIKIHIKO
JP9 patents
Patents
9 patentsUS7054860B2May 30, 2006
Method and system for retrieving a document and computer readable storage medium
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US6865571B2Mar 8, 2005
Document retrieval method and system and computer readable storage medium
HITACHI LTD33 citations92
US6757676B1Jun 29, 2004
Text mining method and apparatus allowing a user to analyze contents of a document set from plural analysis axes
HITACHI LTD23 citations92
US7120625B2Oct 10, 2006
Method and apparatus for document information management
HITACHI LTD30 citations90
US4979109ADec 18, 1990
Method of controlling a data dictionary directory system in a data base system
HITACHI LTD22 citations80
US6738786B2May 18, 2004
Data display method and apparatus for use in text mining
HITACHI LTD9 citations73
US4833597AMay 23, 1989
Dictionary/directory management method in database system
HITACHI LTD18 citations72
US7506101B2Mar 17, 2009
Data migration method and system
HITACHI LTD7 citations71
US7702865B2Apr 20, 2010
Storage system and data migration method
HITACHI LTD5 citations60