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Data structures for temporal graphs based on compact sequence representations
Indexado
WoS WOS:000353608600001
Scopus SCOPUS_ID:84924351104
DOI 10.1016/J.IS.2015.02.002
Año 2015
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



Temporal graphs represent vertices and binary relations that change along time. In this paper, a temporal graph is conceptualized as the sequences of changes on its edges during its lifetime, also known as temporal adjacency logs. The paper explores the use of compression techniques, and compact and self-indexed data structures, to represent large temporal graphs. More specifically, we present four strategies to represent temporal graphs. The first two strategies, Time-interval Log per Edge (EdgeLog) and the Adjacency Log of Events (EveLog), use compression techniques over the inverted indexes that represent the adjacency logs. Then, we introduce two new strategies to represent temporal graphs using compact and self-indexed data structures. Compact Adjacency Sequence (CAS) represents changes on adjacent vertices as a sequence stored in a Wavelet Tree, and the Compact Events ordered by Time (CET) represents the edges that change in each time instant using Interleaved Wavelet Tree, a new compact and self-indexed data structure specifically designed in this work that is able to represent a sequence of multidimensional symbols (that is, tuples of symbols encoded together). We experimentally evaluate the four strategies and compare them with previous alternatives in the state-of-the-art showing that the four alternatives can represent large temporal graphs making efficient use of space, while keeping good time performance for a wide range of useful queries. We conclude that the use of compression techniques or the use of compact and self-indexed data structures open the possibility for the design of interesting representations of temporal graphs that fit the heeds of different application domains. (C) 2015 Elsevier Ltd. All rights reserved.

Revista



Revista ISSN
Information Systems 0306-4379

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Disciplinas de Investigación



WOS
Computer Science, Information Systems
Scopus
Information Systems
Software
Hardware And Architecture
SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Caro, Diego Hombre Universidad de Concepción - Chile
2 RODRÍGUEZ-TASTETS, MARIA ANDREA Mujer Universidad de Concepción - Chile
3 Brisaboa, Nieves R. Mujer Univ A Coruna - España
Universidade da Coruña - España

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Origen de Citas Identificadas



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Citas identificadas: Las citas provienen de documentos incluidos en la base de datos de DATACIENCIA

Citas Identificadas: 20.0 %
Citas No-identificadas: 80.0 %

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Citas identificadas: Las citas provienen de documentos incluidos en la base de datos de DATACIENCIA

Citas Identificadas: 20.0 %
Citas No-identificadas: 80.0 %

Financiamiento



Fuente
FONDECYT
Fondef
Fondo Nacional de Desarrollo Científico y Tecnológico
Comisión Nacional de Investigación Científica y Tecnológica
European Regional Development Fund
Fondo de Fomento al Desarrollo Científico y Tecnológico
Ministerio de Ciencia e Innovación
Xunta de Galicia
CONICYT Scholarship
Xunta de Galicia (FEDER)
MICINN (FEDER)
MICINN (PGE)
Centro para el Desarrollo Tecnológico Industrial

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Agradecimientos



Agradecimiento
Diego Caro and M. Andrea Rodriguez were funded by Fondef D09I1185. Diego Caro is supported by a CONICYT scholarship for PhD. M. Andrea Rodriguez is funded by Fondecyt 1140428. Nieves Brisaboa is funded by MICINN (PGE and FEDER) Grants TIN2009-14560-C03-02, TIN2010-21246-C02-01 and CDTI CEN-20091048, and by Xunta de Galicia (co-funded with FEDER) ref. 2010/17. We would also like to thank to Diego Seco and Jose Fuentes for their help in the preliminary discussions of the structures, to Guillermo de Bernardo for his help providing all the Ks implementations, and to Claudio Sanhueza from Yahoo! Labs, who helps us with the Flickr dataset.
Diego Caro and M. Andrea Rodríguez were funded by Fondef D09I1185 . Diego Caro is supported by a CONICYT scholarship for PhD. M. Andrea Rodríguez is funded by Fondecyt 1140428 . Nieves Brisaboa is funded by MICINN (PGE and FEDER) Grants TIN2009-14560-C03-02 , TIN2010-21246-C02-01 and CDTI CEN-20091048 , and by Xunta de Galicia (co-funded with FEDER) ref. 2010/17. We would also like to thank to Diego Seco and José Fuentes for their help in the preliminary discussions of the structures, to Guillermo de Bernardo for his help providing all the Ks implementations, and to Claudio Sanhueza from Yahoo! Labs, who helps us with the Flickr dataset.

Muestra la fuente de financiamiento declarada en la publicación.