Data/hora: 11/05/2024 01:35:37

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