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Locality sensitive hashing: A comparison of hash function types and querying mechanisms

Paulevé, Loïc, Jégou, Hervé, Amsaleg, Laurent·2010·Pattern Recognition Letters

Abstract

It is well known that high-dimensional nearest neighbor retrieval is very expensive. Dramatic performance gains are obtained using approximate search schemes, such as the popular Locality-Sensitive Hashing (LSH). Several extensions have been proposed to address the limitations of this algorithm, in particular, by choosing more appropriate hash functions to better partition the vector space. All the proposed extensions, however, rely on a structured quantizer for hashing, poorly fitting real data sets, limiting its performance in practice. In this paper, we compare several families of space hashing functions in a real setup, namely when searching for high-dimension SIFT descriptors. The comparison of random projections, lattice quantizers, k-means and hierarchical k-means reveal that unstructured quantizer significantly improves the accuracy of LSH, as it closely fits the data in the feature space. We then compare two querying mechanisms introduced in the literature with the one originally proposed in LSH, and discuss their respective merits and limitations.

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Metadata

Authors
Paulevé, L., Jégou, H., & Amsaleg, L.
Venue
Pattern Recognition Letters
Publisher
Elsevier BV
Published
2010-08
Volume
31
Issue
11
Pages
1348-1358
ISSN
0167-8655 (ISSN-L)
OpenAlex
W2059139185
Cited by
297
References
6
FWCI
22.48
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Locality sensitive hashing: A comparison of hash function types and querying mechanisms. https://app.cochat.ai/papers/10.1016/j.patrec.2010.04.004
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Paulevé, L., Jégou, H., & Amsaleg, L. (2010). Locality sensitive hashing: A comparison of hash function types and querying mechanisms. Pattern Recognition Letters. https://doi.org/10.1016/j.patrec.2010.04.004

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