Zobrazeno 1 - 10
of 679
pro vyhledávání: '"Nieves, R."'
Publikováno v:
Geo-spatial Information Science, Pp 1-37 (2024)
GraCT and ContaCT were the first compressed data structures to represent object trajectories, demonstrating that it was possible to use orders of magnitude less space than classical indexes while staying competitive in query times. In this paper we c
Externí odkaz:
https://doaj.org/article/2278ec1cfa11426d9d5966b44dd85339
Autor:
Fernandez, Ronield, Colás-Ruiz, Nieves R., Lara-Martín, Pablo A., Fernández-Cisnal, Ricardo, Hampel, Miriam
Publikováno v:
In Environmental Pollution 1 September 2024 356
Publikováno v:
In Information Sciences July 2024 674
Autor:
Colás-Ruiz, Nieves R., Pintado-Herrera, Marina G., Santonocito, Melania, Salerno, Barbara, Tonini, Federico, Lara-Martín, Pablo A., Hampel, Miriam
Publikováno v:
In Science of the Total Environment 20 February 2024 912
Autor:
Brisaboa, Nieves R., Cerdeira-Pena, Ana, de Bernardo, Guillermo, Fariña, Antonio, Navarro, Gonzalo
In recent years, RDF has gained popularity as a format for the standardized publication and exchange of information in the Web of Data. In this paper we introduce RDFCSA, a data structure that is able to self-index an RDF dataset in small space and s
Externí odkaz:
http://arxiv.org/abs/2009.10045
We present a compact data structure to represent both the duration and length of homogeneous segments of trajectories from moving objects in a way that, as a data warehouse, it allows us to efficiently answer cumulative queries. The division of traje
Externí odkaz:
http://arxiv.org/abs/2002.12050
We present a new compact representation to efficiently store and query large RDF datasets in main memory. Our proposal, called BMatrix, is based on the k2-tree, a data structure devised to represent binary matrices in a compressed way, and aims at im
Externí odkaz:
http://arxiv.org/abs/2002.11622
Autor:
Brisaboa, Nieves R., Fariña, Antonio, Galaktionov, Daniil, Rodeiro, Tirso V., Rodríguez, M. Andrea
Publikováno v:
Proc. of the 25th International Symposium on String Processing and Information Retrieval (SPIRE), Lima, Peru, October 9-11th, pp 85-101 (2018)
Representing the trajectories of mobile objects is a hot topic from the widespread use of smartphones and other GPS devices. However, few works have focused on representing trips over public transportation networks (buses, subway, and trains) where a
Externí odkaz:
http://arxiv.org/abs/1911.09044
Publikováno v:
Journal of Discrete Algorithms 43, pp. 54-71 (2017)
Sequence representations supporting not only direct access to their symbols, but also rank/select operations, are a fundamental building block in many compressed data structures. Several recent applications need to represent highly repetitive sequenc
Externí odkaz:
http://arxiv.org/abs/1911.09077