Performance Study of Independent Anchor Spaces for Similarity Searching

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14330%2F14%3A00073219" target="_blank" >RIV/00216224:14330/14:00073219 - isvavai.cz</a>

Result on the web

<a href="http://comjnl.oxfordjournals.org/content/57/11/1741" target="_blank" >http://comjnl.oxfordjournals.org/content/57/11/1741</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/comjnl/bxt114" target="_blank" >10.1093/comjnl/bxt114</a>

Result language

angličtina

Original language name

Performance Study of Independent Anchor Spaces for Similarity Searching

Original language description

This work targets the problem of search efficiency vs. answer quality of approximate metric-based similarity search. We especially focus on techniques based on recursive Voronoi-like partitioning or, from another perspective, on pivot permutations. Thesetechniques use sets of reference objects (anchors/pivots) to partition the metric space into cells of close data items. Instead of refining the search space by enlarging the anchor set of a single index, we propose to divide a large pivot set into several subsets and build multiple indexes with independent space partitioning; at query time, the overall search costs are also divided among the separate indexes. Our thorough experimental study on three different real datasets uncovers drawbacks of excessive increase of a single pivot set size?such partitioning refinement can be counterproductive beyond a certain number of pivots. Our approach overcomes the root causes of this limitation and increases the answer quality while preserving th

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

IN - Informatics

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

The Computer Journal

ISSN

0010-4620

e-ISSN

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Volume of the periodical

57

Issue of the periodical within the volume

11

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

1741-1755

UT code for WoS article

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EID of the result in the Scopus database

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