Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2008-07-29
2008-07-29
Cottingham, John (Department: 2167)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C707S793000, C707S793000, C707S793000, C705S026640
Reexamination Certificate
active
07406465
ABSTRACT:
The likely relevance of each term of a search-engine query of two or more terms is determined by their deletion probability scores. If the deletion probability scores are significantly different, the deletion probability score can be used to return targeted ads related to the more relevant term or terms along with the search results. Deletion probability scores are determined by first gathering historical records of search queries of two or more terms in which a subsequent query was submitted by the same user after one or more of the terms had been deleted. The deletion probability score for a particular term of a search query is calculated as the ratio of the number of times that particular term was itself deleted prior to a subsequent search by the same user divided by the number of times there were subsequent search queries by the same user in which any term or terms including that given term was deleted by the same user prior to the subsequent search. Terms are not limited to individual alphabetic words.
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Jones, Rosie and Daniel C. Fain, “Query Word Deletion Prediction”, SIGIR '03, Jul. 28-Aug. 1, 2003.
Fain Daniel C.
Jones Rosemary
Cottingham John
Dreier LLP
Ostrow Seth H.
Rayyan Susan F
Yahoo ! Inc.
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