10459 search results - page 1719 / 2092 » Multimedia Information Retrieval |
216
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SIGMOD
2012
ACM
13 years 9 months ago
2012
ACM
Query substitution is an important problem in information retrieval. Much work focuses on how to find substitutes for any given query. In this paper, we study how to efficiently ...
208
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KDD
2012
ACM
13 years 9 months ago
2012
ACM
Non-negative matrix factorization (NMF) provides a lower rank approximation of a matrix. Due to nonnegativity imposed on the factors, it gives a latent structure that is often mor...
247
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EDBT
2012
ACM
13 years 9 months ago
2012
ACM
Cloud-based data management platforms often employ multitenant databases, where service providers achieve economies of scale by consolidating multiple tenants on shared servers. I...
226
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EDBT
2012
ACM
13 years 9 months ago
2012
ACM
Web search logs contain extremely sensitive data, as evidenced by the recent AOL incident. However, storing and analyzing search logs can be very useful for many purposes (i.e. in...
192
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WWW
2004
ACM
16 years 7 months ago
2004
ACM
Personalized support for learners becomes even more important, when e-Learning takes place in open and dynamic learning and information networks. This paper shows how to realize p...