US Patent No: 6,505,198

Number of patents in Portfolio can not be more than 2000

Sort system for text retrieval

ALSO PUBLISHED AS: 20020059346

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Abstract

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The present invention is a method for operating a computer system to retrieve information from a computer database. This method decomposes documents from the database into subdocuments and then inverts the database. Also, a query for retrieving documents from a database is decomposed into terms. The subdocuments from the inverted database and the terms from the query are then used to compute a score that indicates a quantitative relation between terms in the query and the subdocuments. The resulting list of the subdocuments and their scores is then reorganized into a heap form. The highest ranking subdocument is then selected by the computer and the text associated with this subdocument is displayed. The remainder of the subdocument score list is concurrently reheapified.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
JUSTSYSTEMS EVANS RESEARCH, INC.PITTSBURGH, PA44

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Horowitz, Michael L Pittsburgh, PA 15 113

Cited Art Landscape

Patent Info (Count) # Cites Year
 
JUSTSYSTEMS EVANS RESEARCH, INC. (5)
5,907,840 Overlapping subdocuments in a vector space search process 23 1997
5,926,808 Displaying portions of text from multiple documents over multiple databases related to a search query in a computer network 65 1997
5,953,728 System for modifying a database using a transaction log 6 1997
5,995,962 Sort system for merging database entries 8 1997
6,138,114 Sort system for merging database entries 6 1999
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (4)
4,531,186 User friendly data base access 54 1983
5,043,872 Access path optimization using degrees of clustering 68 1988
5,099,426 Method for use of morphological information to cross reference keywords used for information retrieval 70 1989
5,787,001 Method for using sorting techniques in a type-safe way 8 1995
 
XEROX CORPORATION (2)
5,519,608 Method for extracting from a text corpus answers to questions stated in natural language by using linguistic analysis and hypothesis generation 174 1993
5,696,962 Method for computerized information retrieval using shallow linguistic analysis 314 1996
 
APPLE COMPUTER, INC. (1)
5,715,443 Method and apparatus for searching for information in a data processing system and for providing scheduled search reports in a summary format 85 1994
 
APPLE INC. (1)
5,819,273 Method and apparatus for searching for information in a network and for controlling the display of searchable information on display devices in the network 196 1997
 
ATR Auditory and Visual Perception Research Laboratories (1)
5,459,861 Evaluation support method for retrieved data 10 1993
 
Cochran; Nancy P. (1)
5,206,949 Database search and record retrieval system which continuously displays category names during scrolling and selection of individually displayed search terms 122 1989
 
GOOGLE INC. (1)
5,519,857 Hierarchical presearch type text search method and apparatus and magnetic disk unit used in the apparatus 42 1992
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (1)
5,369,577 Text searching system 94 1991
 
HITACHI, LTD. (1)
4,868,733 Document filing system with knowledge-base network of concept interconnected by generic, subsumption, and superclass relations 107 1986
 
NXP B.V. (1)
5,202,840 Method for partitioning of connected circuit components before placement in one or more integrated circuits 49 1990
 
RICOH CALIFORNIA RESEARCH CENTER (1)
5,465,353 Image matching and retrieval by multi-access redundant hashing 269 1994
 
ROCKSTAR BIDCO, LP (1)
5,375,235 Method of indexing keywords for searching in a database recorded on an information recording medium 102 1991
 
SHARP KABUSHIKI KAISHA (1)
5,745,891 Apparatus for rearranging the rows of information in a displayed table by highlighting a different column attribute 14 1996
 
UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC. (1)
5,576,954 Process for determination of text relevancy 101 1993
 
Other [Check patent profile for assignment information] (1)
5,619,718 Associative memory processing method for natural language parsing and pattern recognition 22 1995

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
7,565,349 Method for computing frequency distribution for many fields in one pass in parallel 2 2005

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