5692 search results - page 808 / 1139 » Challenges and Unsolved Problems |
182
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CIKM
2008
Springer
15 years 8 months ago
2008
Springer
In automated text categorization, given a small number of labeled documents, it is very challenging, if not impossible, to build a reliable classifier that is able to achieve high...
218
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CIKM
2008
Springer
15 years 8 months ago
2008
Springer
Generating alternative queries, also known as query suggestion, has long been proved useful to help a user explore and express his information need. In many scenarios, such sugges...
181
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CIKM
2008
Springer
15 years 8 months ago
2008
Springer
Structured documents contain elements defined by the author(s) and annotations assigned by other people or processes. Structured documents pose challenges for probabilistic retrie...
183
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CIKM
2008
Springer
15 years 8 months ago
2008
Springer
In contextual advertising, estimating the number of impressions of an ad is critical in planning and budgeting advertising campaigns. However, producing this forecast, even within...
211
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AMFG
2005
IEEE
15 years 8 months ago
2005
IEEE
Abstract. Face recognition under varying pose is a challenging problem, especially when illumination variations are also present. Under Lambertian model, spherical harmonics repres...