664 search results - page 72 / 133 » Adaptive Selectivity Estimation Using Query Feedback |
131
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SIGIR
2005
ACM
15 years 7 months ago
2005
ACM
We formulate and study search algorithms that consider a user’s prior interactions with a wide variety of content to personalize that user’s current Web search. Rather than re...
133
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IDEAS
2008
IEEE
15 years 8 months ago
2008
IEEE
With more and more natural language text stored in databases, handling respective query predicates becomes very important. Optimizing queries with predicates includes (sub)string ...
139
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VLDB
2005
ACM
15 years 7 months ago
2005
ACM
Developing cost models for query optimization is significantly harder for XML queries than for traditional relational queries. The reason is that XML query operators are much mor...
104
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PRL
2000
15 years 2 months ago
2000
We have developed a novel system for content-based image retrieval in large, unannotated databases. The system is called PicSOM, and it is based on tree structured self-organizing...
84
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IADIS
2004
15 years 3 months ago
2004
The success of Web search is often limited by a variety of factors. Typical queries are vague and imprecise. At the same time, the Web is a dynamic and unmoderated collection and ...