3678 search results - page 58 / 736 » Personalization of Queries in Database Systems |
264
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PODS
2009
ACM
16 years 6 months ago
2009
ACM
Let be a finite, ordered alphabet, and consider a string x = x1x2 . . . xn n . A secondary index for x answers alphabet range queries of the form: Given a range [al, ar] , retu...
198
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ICDT
2012
ACM
13 years 8 months ago
2012
ACM
In a recent paper by Hellerstein [15], a tight relationship was conjectured between the number of strata of a Datalog¬ program and the number of “coordination stages” require...
155
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GCC
2005
Springer
15 years 11 months ago
2005
Springer
DarGridⅡ is an implemented database gird system whose goal is to provide a semantic solution for integrating database resources on the web. Although many algorithms have been pro...
173
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WWW
2009
ACM
16 years 6 months ago
2009
ACM
To deal with the problem of empty or too little answers returned from a Web database in response to a user query, this paper proposes a novel approach to provide relevant and rank...
149
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ACSC
2001
IEEE
15 years 9 months ago
2001
IEEE
Most search systems for querying large document collections---for example, web search engines---are based on well-understood information retrieval principles