280 search results - page 24 / 56 » Approximate nearest neighbors using sparse representations |
260
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ORL
2011
15 years 12 days ago
2011
We derive a convex relaxation for cardinality constrained Principal Component Analysis (PCA) by using a simple representation of the L1 unit ball and standard Lagrangian duality. ...
181
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MMM
2009
Springer
16 years 2 months ago
2009
Springer
Abstract. In this paper we address the task of image categorization using a new similarity measure on the space of Sparse Multiscale Patches (SMP). SMPs are based on a multiscale t...
172
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ICIP
2004
IEEE
16 years 7 months ago
2004
IEEE
The dictionary approach to signal and image processing has been massively investigated in the last two decades, proving very attractive for a wide range of applications. The effec...
193
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CORR
2010
Springer
15 years 6 months ago
2010
Springer
In this paper we show how the complexity of performing nearest neighbor (NNS) search on a metric space is related to the expansion of the metric space. Given a metric space we loo...
146
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ISVD
2007
IEEE
16 years 6 days ago
2007
IEEE
Three strategies are presented for developing a knowledge-based statistical contact potential from computationally hydrated proteins that may be useful in studies of protein foldi...