Perils of Combining Parallel Distance Computations with Metric and Ptolemaic Indexing in kNN Queries
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10281374" target="_blank" >RIV/00216208:11320/14:10281374 - isvavai.cz</a>
Result on the web
<a href="http://link.springer.com/chapter/10.1007/978-3-319-11988-5_12" target="_blank" >http://link.springer.com/chapter/10.1007/978-3-319-11988-5_12</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/978-3-319-11988-5_12" target="_blank" >10.1007/978-3-319-11988-5_12</a>
Alternative languages
Result language
angličtina
Original language name
Perils of Combining Parallel Distance Computations with Metric and Ptolemaic Indexing in kNN Queries
Original language description
Similarity search methods face serious performance issues since similarity functions are rather expensive to compute. Many optimization techniques were designed to reduce the number of similarity computations, when a query is being resolved. Indexing methods, like pivot table prefiltering, based on the metric properties of feature space, are one of the most popular methods. They can increase the speed of query evaluation even by orders of magnitude. Another approach is to employ highly parallel architectures like GPUs to accelerate evaluation by unleashing their raw computational power. Unfortunately, resolving the k~nearest neighbors (kNN) queries optimized with metric indexing is a problem that is serial in nature. In this paper, we explore the perils of kNN parallelization and we propose a new algorithm that basically converts kNN queries into range queries, which are perfectly parallelizable. We have experimentally evaluated all approaches using a~highly parallel environment compri
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
IN - Informatics
OECD FORD branch
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Result continuities
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)
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Similarity Search and Applications
ISBN
978-3-319-11987-8
ISSN
0302-9743
e-ISSN
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Number of pages
12
Pages from-to
127-138
Publisher name
Springer Berlin Heidelberg
Place of publication
Heidelberg, Germany
Event location
Los Cabos, Mexiko
Event date
Oct 29, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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