Inventor
NIWA YOSHIKI
JP13 patents
Patents
13 patentsUS6446065B1Sep 3, 2002
Document retrieval assisting method and system for the same and document retrieval service using the same
HITACHI LTD155 citations98
US6457004B1Sep 24, 2002
Document retrieval assisting method, system and service using closely displayed areas for titles and topics
HITACHI LTD84 citations97
US5987460ANov 16, 1999
Document retrieval-assisting method and system for the same and document retrieval service using the same with document frequency and term frequency
HITACHI LTD223 citations96
US6745183B2Jun 1, 2004
Document retrieval assisting method and system for the same and document retrieval service using the same
HITACHI LTD24 citations92
US6654738B2Nov 25, 2003
Computer program embodied on a computer-readable medium for a document retrieval service that retrieves documents with a retrieval service agent computer
HITACHI LTD27 citations92
US6584460B1Jun 24, 2003
Method of searching documents and a service for searching documents
HITACHI LTD28 citations92
US6850937B1Feb 1, 2005
Word importance calculation method, document retrieving interface, word dictionary making method
HITACHI LTD44 citations91
US7277881B2Oct 2, 2007
Document retrieval system and search server
HITACHI LTD14 citations83
US7590651B2Sep 15, 2009
Search apparatus
HITACHI LTD7 citations73
US7065518B2Jun 20, 2006
Search system
HITACHI LTD4 citations61
US10699057B2Jun 30, 2020
System and method for controlling information presented to user referring to contents
HITACHI LTD1 citations59
US8046368B2Oct 25, 2011
Document retrieval system and document retrieval method
HITACHI LTD5 citations57
US7693910B2Apr 6, 2010
Method of searching documents and a service for searching documents
HITACHI LTD0 citations52