2020
Accelerating Metric Filtering by Improving Bounds on Estimated Distances
MÍČ, Vladimír a Pavel ZEZULAZákladní údaje
Originální název
Accelerating Metric Filtering by Improving Bounds on Estimated Distances
Autoři
Vydání
Cham, Similarity Search and Applications: 13th International Conference, SISAP 2020, Copenhagen, Denmark, September 30 - October 2, 2020, Proceedings, od s. 3-17, 15 s. 2020
Nakladatel
Springer
Další údaje
Jazyk
angličtina
Typ výsledku
Stať ve sborníku
Obor
10201 Computer sciences, information science, bioinformatics
Stát vydavatele
Švýcarsko
Utajení
není předmětem státního či obchodního tajemství
Forma vydání
tištěná verze "print"
Odkazy
Impakt faktor
Impact factor: 0.402 v roce 2005
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14330/20:00116699
Organizační jednotka
Fakulta informatiky
ISBN
978-3-030-60935-1
ISSN
UT WoS
EID Scopus
Klíčová slova anglicky
Metric space;Similarity search;Triangle inequality;Metric filtering;Estimating unknown distance
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 10. 5. 2021 06:02, RNDr. Pavel Šmerk, Ph.D.
Anotace
V originále
Filtering is a fundamental strategy of metric similarity indexes to minimise the number of computed distances. Given a triple of objects for which distances of two pairs are known, the lower and upper bounds on the third distance can be set as the difference and the sum of these two already known distances, due to the triangle inequality rule of the metric space. For efficiency reasons, the tightness of bounds is crucial, but as angles within triangles of distances can be arbitrary, the worst case with zero and straight angles must also be considered for correctness. However, in data of real-life applications, the distribution of possible angles is skewed and extremes are very unlikely to occur. In this paper, we enhance the existing definition of bounds on the unknown distance with information about possible angles within triangles. We show that two lower bounds and one upper bound on each distance exist in case of limited angles. We analyse their filtering power and confirm high improvements of efficiency by experiments on several real-life datasets.
Návaznosti
| EF16_019/0000822, projekt VaV |
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