447 search results - page 53 / 90 » Approximation Algorithms for Directed Steiner Problems |
130
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SI3D
2006
ACM
15 years 11 months ago
2006
ACM
We propose a real-time method for rendering rigid objects with complex view-dependent effects under distant all-frequency lighting. Existing precomputed light transport approaches...
128
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ICASSP
2011
IEEE
14 years 8 months ago
2011
IEEE
This paper deals with the minimal polyadic decomposition (also known as canonical decomposition or Parafac) of a 3way array, assuming each entry is positive. In this case, the low...
166
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SODA
2012
ACM
13 years 7 months ago
2012
ACM
The problem of approximating convex bodies by polytopes is an important and well studied problem. Given a convex body K in Rd , the objective is to minimize the number of vertices...
133
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SIGIR
2009
ACM
15 years 11 months ago
2009
ACM
Pseudo relevance feedback (PRF), which has been widely applied in IR, aims to derive a distribution from the top n pseudo relevant documents D. However, these documents are often ...
179
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ISCAS
2008
IEEE
15 years 11 months ago
2008
IEEE
— Non-negative matrix factorization (NMF), i.e. V ≈ WH where both V, W and H are non-negative has become a widely used blind source separation technique due to its part based r...