4557 search results - page 646 / 912 » A performance evaluation of local descriptors |
169
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RECSYS
2009
ACM
16 years 1 months ago
2009
ACM
Collaborative Filtering (CF) recommendations are computed by leveraging a historical data set of users’ ratings for items. It assumes that the users’ previously recorded ratin...
190
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SIGCOMM
2009
ACM
16 years 1 months ago
2009
ACM
This demo illustrates the benefits of BitHoc, a standalone protocol for content sharing among spontaneous communities of mobile handhelds using wireless multi-hop connections. Bi...
177
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SIGIR
2009
ACM
16 years 1 months ago
2009
ACM
Search and recommendation systems must include contextual information to effectively model users’ interests. In this paper, we present a systematic study of the effectiveness of...
188
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SIGIR
2009
ACM
16 years 1 months ago
2009
ACM
Incorporating features extracted from clickthrough data (called clickthrough features) has been demonstrated to significantly improve the performance of ranking models for Web sea...
154
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SIGIR
2009
ACM
16 years 1 months ago
2009
ACM
In this paper we examine user queries with respect to diversity: providing a mix of results across different interpretations. Using two query log analysis techniques (click entrop...