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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1109/TPAMI.2014.2339821
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|a eng
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|a Arandjelović, Relja
|e verfasserin
|4 aut
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| 245 |
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|a Extremely Low Bit-Rate Nearest Neighbor Search Using a Set Compression Tree
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|c 2014
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 25.11.2015
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|a Date Revised 10.09.2015
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a The goal of this work is a data structure to support approximate nearest neighbor search on very large scale sets of vector descriptors. The criteria we wish to optimize are: (i) that the memory footprint of the representation should be very small (so that it fits into main memory); and (ii) that the approximation of the original vectors should be accurate. We introduce a novel encoding method, named a Set Compression Tree (SCT), that satisfies these criteria. It is able to accurately compress 1 million descriptors using only a few bits per descriptor. The large compression rate is achieved by not compressing on a per-descriptor basis, but instead by compressing the set of descriptors jointly. We describe the encoding, decoding and use for nearest neighbor search, all of which are quite straightforward to implement. The method, tested on standard benchmarks (SIFT1M and 80 Million Tiny Images), achieves superior performance to a number of state-of-the-art approaches, including Product Quantization, Locality Sensitive Hashing, Spectral Hashing, and Iterative Quantization. For example, SCT has a lower error using 5 bits than any of the other approaches, even when they use 16 or more bits per descriptor. We also include a comparison of all the above methods on the standard benchmarks
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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| 700 |
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|a Zisserman, Andrew
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t IEEE transactions on pattern analysis and machine intelligence
|d 1979
|g 36(2014), 12 vom: 14. Dez., Seite 2396-406
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|x 1939-3539
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|g volume:36
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|g pages:2396-406
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|u http://dx.doi.org/10.1109/TPAMI.2014.2339821
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