Data/hora: 19/06/2024 19:35:14

Biblioteca(s): | Embrapa Agricultura Digital.
Data corrente: | 15/02/2002
Data da última atualização: | 05/09/2006
Autoria: | NASCIMENTO, M. A.; SILVA, J. R. O.; THEODORIDIS, Y.
Afiliação: | EMBRAPA-CNPTIA; UNICAMP; NATIONAL TECHNICAL UNIVERSITY OF ATHENS.
Título: | Access structures for moving points.
Ano de publicação: | 1998
Fonte/Imprenta: | Campinas: UNICAMP, 1998.
Páginas: | 23 p.
Série: | Relatorio Tecnico IC-98-34).
Idioma: | Inglês
Conteúdo: | Several applications require management of data which is spatially dynamic, e.g., tracking of battle ships or moving cells in a blood sample. The capability of handling the temporal aspect, i.e., the history of such type of data, is also important. This paper presents and evaluates three temporal extensions of the R-tree, the 3D R-tree, the 2+3 R-tree and the HR-tree, wich are capable of indexing spatiotemporal data. Our experiments have shown that the while the HR-tree was the larger structure, its query processing cost was over 50% smaller then the ones yielded by the 3D R-tree and the 2+3 R-tree. Also compared to the (non-practical) approach of storing one R-tree for each of the spatial database states it offered the same query processing cost, saving around one third of storage space.
Palavras-Chave: | Structures for moving points.
Categoria do assunto: | --
Registro original: | Embrapa Agricultura Digital (CNPTIA)

Exemplares:

CNPTIA - (8656-1) - UMT - RT - -- -  -  - 2002.01ex1 - DIS
CNPTIA - (8656-2) - UMT - RT - -- -  -  - 2002.01ex2 - DIS