17329 search results - page 3049 / 3466 » Improved non-approximability results |
175
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WWW
2008
ACM
16 years 7 months ago
2008
ACM
In this paper, we cast the image-ranking problem into the task of identifying "authority" nodes on an inferred visual similarity graph and propose an algorithm to analyz...
204
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WWW
2008
ACM
16 years 7 months ago
2008
ACM
In this paper we present a new document representation model based on implicit user feedback obtained from search engine queries. The main objective of this model is to achieve be...
168
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WWW
2007
ACM
16 years 7 months ago
2007
ACM
Discovering mappings between concept hierarchies is widely regarded as one of the hardest and most urgent problems facing the Semantic Web. The problem is even harder in domains w...
173
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WWW
2006
ACM
16 years 7 months ago
2006
ACM
Contextual search refers to proactively capturing the information need of a user by automatically augmenting the user query with information extracted from the search context; for...
195
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WWW
2005
ACM
16 years 7 months ago
2005
ACM
Large web search engines have to answer thousands of queries per second with interactive response times. Due to the sizes of the data sets involved, often in the range of multiple...