1587 search results - page 217 / 318 » UFRGS@CLEF2009: Retrieval by Numbers |
176
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KDD
2006
ACM
16 years 6 months ago
2006
ACM
We investigate three methods for defining a session on Web search engines. We examine 2,465,145 interactions from 534,507 Web searchers. We compare defining sessions using: 1) Int...
144
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KDD
2003
ACM
16 years 6 months ago
2003
ACM
Two-dimensional contingency or co-occurrence tables arise frequently in important applications such as text, web-log and market-basket data analysis. A basic problem in contingenc...
202
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KDD
2001
ACM
16 years 6 months ago
2001
ACM
Random projections have recently emerged as a powerful method for dimensionality reduction. Theoretical results indicate that the method preserves distances quite nicely; however,...
145
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CHI
2003
ACM
16 years 6 months ago
2003
ACM
Despite recent advances in natural language question answering technology, the problem of designing effective user interfaces has been largely unexplored. We conducted a user stud...
240
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VLDB
2005
ACM
16 years 6 months ago
2005
ACM
Scalable storage architectures allow for the addition or removal of storage devices to increase storage capacity and bandwidth or retire older devices. Assuming random placement of...