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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
15/02/2002 |
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Data da última atualização: |
05/09/2006 |
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Autoria: |
NASCIMENTO, M. A.; SILVA, J. R. O.; THEODORIDIS, Y. |
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Afiliação: |
EMBRAPA-CNPTIA; UNICAMP; NATIONAL TECHNICAL UNIVERSITY OF ATHENS. |
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Título: |
Access structures for moving points. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Campinas: UNICAMP, 1998. |
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Páginas: |
23 p. |
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Série: |
Relatorio Tecnico IC-98-34). |
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Idioma: |
Inglês |
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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. |
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Palavras-Chave: |
Structures for moving points. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01241nam a2200169 a 4500
001 1008044
005 2006-09-05
008 1998 bl uuuu t 00u1 u #d
100 1 $aNASCIMENTO, M. A.
245 $aAccess structures for moving points.
260 $aCampinas: UNICAMP$c1998
300 $a23 p.
490 $aRelatorio Tecnico IC-98-34).
520 $aSeveral 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.
653 $aStructures for moving points
700 1 $aSILVA, J. R. O.
700 1 $aTHEODORIDIS, Y.
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Embrapa Agricultura Digital (CNPTIA) |
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| 61. |  | NASCIMENTO, E. R. do; NASCIMENTO, M. da G. F. do. Sinusite em codornas por Mycoplasma gallisepticum. In: CONGRESSO BRASILEIRO DE MEDICINA VETERINARIA, 18., 1982, Balneario Camboriu, SC. Resumos... Florianopolis: SBMV / SOMEVESC, 1982. p.77 CONGRESSO INTERNACIONAL DE VETERINARIA EM LINGUA PORTUGUESA, 3.; SEMINARIO BRASILEIRO DE PARASITOLOGIA VETERINARIA, 3., 1982, Balneario Camboriu, SC.| Biblioteca(s): Embrapa Suínos e Aves. |
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