Pivot selection strategies for permutation-based similarity search (Contributo in atti di convegno)

Type

• Prodotto della ricerca (Classe)
• Contributo in atti di convegno (Classe)

Label

• Pivot selection strategies for permutation-based similarity search (Contributo in atti di convegno) (literal)

Anno

• 2013-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1007/978-3-642-41062-8_10 (literal)

Alternative label

• Amato G., Esuli A., Falchi F. (2013)
  Pivot selection strategies for permutation-based similarity search
  in SISAP 2013 - Similarity Search and Applications. 6th International Conference, A Coruña, Spain, 2-4 October 2013
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Amato G., Esuli A., Falchi F. (literal)

Pagina inizio

• 91 (literal)

Pagina fine

• 102 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://link.springer.com/chapter/10.1007%2F978-3-642-41062-8_10 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#volumeInCollana

• 8199 (literal)

Note

• ISI Web of Science (WOS) (literal)
• Scopu (literal)
• PuMa (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• CNR-ISTI, Pisa, Italy; CNR-ISTI, Pisa, Italy; CNR-ISTI, Pisa, Italy. (literal)

Titolo

• Pivot selection strategies for permutation-based similarity search (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn

• 978-3-642-41061-1 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume

• Nieves Brisaboa, Oscar Pedreira, Pavel Zezula (literal)

Abstract

• Recently, permutation based indexes have attracted interest in the area of similarity search. The basic idea of permutation based indexes is that data objects are represented as appropriately generated permutations of a set of pivots (or reference objects). Similarity queries are executed by searching for data objects whose permutation representation is similar to that of the query. This, of course assumes that similar objects are represented by similar permutations of the pivots. In the context of permutation-based indexing, most authors propose to select pivots randomly from the data set, given that traditional pivot selection strategies do not reveal better performance. However, to the best of our knowledge, no rigorous comparison has been performed yet. In this paper we compare five pivots selection strategies on three permutation-based similarity access methods. Among those, we propose a novel strategy specifically designed for permutations. Two significant observations emerge from our tests. First, random selection is always outperformed by at least one of the tested strategies. Second, there is not a strategy that is universally the best for all permutation-based access methods; rather different strategies are optimal for different methods. (literal)

Editore

• Springer (Editore)

Prodotto di

• Istituto di scienza e tecnologie dell'informazione \"Alessandro Faedo\" (ISTI) (Istituto)
• Digital Libraries (ICT.P08.010.002) (Modulo)

Autore CNR

• ANDREA ESULI (Unità di personale interno)
• FABRIZIO FALCHI (Persona)
• GIUSEPPE AMATO (Persona)

Insieme di parole chiave

• Parole chiave di "Pivot selection strategies for permutation-based similarity search" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• GIUSEPPE AMATO (Persona)
• FABRIZIO FALCHI (Persona)
• ANDREA ESULI (Unità di personale interno)

Prodotto

• Istituto di scienza e tecnologie dell'informazione \"Alessandro Faedo\" (ISTI) (Istituto)
• Digital Libraries (ICT.P08.010.002) (Modulo)

Editore di

• Springer (Editore)

Insieme di parole chiave di

• Parole chiave di "Pivot selection strategies for permutation-based similarity search" (Insieme di parole chiave)