1587 search results - page 59 / 318 » UFRGS@CLEF2009: Retrieval by Numbers |
158
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LWA
2007
15 years 7 months ago
2007
In this paper we investigate how a small number of high-level concepts derived for video shots, such as Sports, Face, Indoor, etc., can be used effectively for ad hoc search in vi...
172
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IADIS
2004
15 years 7 months ago
2004
Data Webhouses are used to retain all the information related to web user's behavior within a web site, working as a shared repository of business data. The advent of e-busin...
119
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SODA
2001
ACM
15 years 7 months ago
2001
ACM
Most information-retrieval systems preprocess the data to produce an auxiliary index structure. Empirically, it has been observed that there is a tradeoff between query response t...
191
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DEBU
2002
15 years 6 months ago
2002
Spatio-temporal databases store information about the positions of individual objects over time. In many applications however, such as traffic supervision or mobile communication ...
143
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IS
2006
15 years 6 months ago
2006
Given two sets S1, S2 of moving objects, a future timestamp tq, and a distance threshold d, a spatio-temporal join retrieves all pairs of objects that are within distance d at tq....