D 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

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
Name: Centrum excelence pro kyberkriminalitu, kyberbezpečnost a ochranu kritických informačních infrastruktur