Detailed Information on Publication Record
2022
Nearest-neighbor Search from Large Datasets using Narrow Sketches
NAOYA, Higuchi, Imamura YASUNOBU, Vladimír MÍČ, Shinohara TAKESHI, Hirata KOUICHI et. al.Basic information
Original name
Nearest-neighbor Search from Large Datasets using Narrow Sketches
Authors
NAOYA, Higuchi, Imamura YASUNOBU, Vladimír MÍČ (203 Czech Republic, guarantor, belonging to the institution), Shinohara TAKESHI, Hirata KOUICHI and Kuboyama TETSUJI
Edition
Portugal, Proceedings of the 11th International Conference on Pattern Recognition Applications and Methods - ICPRAM, p. 401-410, 10 pp. 2022
Publisher
SciTePress
Other information
Language
English
Type of outcome
Stať ve sborníku
Field of Study
10201 Computer sciences, information science, bioinformatics
Country of publisher
Portugal
Confidentiality degree
není předmětem státního či obchodního tajemství
Publication form
printed version "print"
References:
RIV identification code
RIV/00216224:14330/22:00125541
Organization unit
Faculty of Informatics
ISBN
978-989-758-549-4
UT WoS
000819122200044
Keywords in English
Narrow Sketch;Nearest-neighbor Search;Large Dataset;Sketch Enumeration;Partially Restored Distance
Tags
International impact, Reviewed
Změněno: 14/5/2024 12:44, RNDr. Pavel Šmerk, Ph.D.
Abstract
V originále
We consider the nearest-neighbor search on large-scale high-dimensional datasets that cannot fit in the main memory. Sketches are bit strings that compactly express data points. Although it is usually thought that wide sketches are needed for high-precision searches, we use relatively narrow sketches such as 22-bit or 24-bit, to select a small set of candidates for the search. We use an asymmetric distance between data points and sketches as the criteria for candidate selection, instead of traditionally used Hamming distance. It can be considered a distance partially restoring quantization error. We utilize an efficient one-by-one sketch enumeration in the order of the partially restored distance to realize a fast candidate selection. We use two datasets to demonstrate the effectiveness of the method: YFCC100M-HNfc6 consisting of about 100 million 4,096 dimensional image descriptors and DEEP1B consisting of 1 billion 96 dimensional vectors. Using a standard desktop computer, we condu cted a nearest-neighbor search for a query on datasets stored on SSD, where vectors are represented by 8-bit integers. The proposed method executes the search in 5.8 seconds for the 400GB dataset YFCC100M, and 0.24 seconds for the 100GB dataset DEEP1B, while keeping the recall of 90%.
Links
EF16_019/0000822, research and development project |
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