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117
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TREC
2007
15 years 2 months ago
2007
We describe recent extensions to the Ephyra question answering (QA) system and their evaluation in the TREC 2007 QA track. Existing syntactic answer extraction approaches for fact...
118
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PVLDB
2010
14 years 12 months ago
2010
Optimization of join queries based on average selectivities is suboptimal in highly correlated databases. In such databases, relations are naturally divided into partitions, each ...
144
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SIBGRAPI
2009
IEEE
15 years 8 months ago
2009
IEEE
We have designed and implemented a multi-linear discriminant method of constructing and quantifying statistically significant changes on human identity photographs. The method is...
104
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VISUALIZATION
2005
IEEE
15 years 7 months ago
2005
IEEE
Topological concepts and techniques have been broadly applied in computer graphics and geometric modeling. However, the homotopy type of a mapping between two surfaces has not bee...
137
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IWVF
2001
Springer
15 years 6 months ago
2001
Springer
Volumetric images of small mortar samples under load are acquired by X-ray microtomography. The images are binarized at many different threshold values, and over a million connecte...