Processamento Aproximado de Consultas em Bancos de Dados Espaciais Usando Assinaturas Raster
Autores
4515 |
312,10,505
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4516 |
312,10,505
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4517 |
312,10,505
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Informações:
Publicações do PESC
Traditional query processing provides exact answers to queries trying to maximize throughput while minimizing response time. However, in many applications, the response time of exact answers is often longer than what is acceptable. Approximate query processing has emerged as an alternative approach to give to the user an answer in a short time, although not an exact one. There is a large set of techniques for approximate query processing available in different research areas. However, most of them are only suitable for traditional data. This work proposes the use of raster signature for approximate query processing in spatial database. We enumerate and propose algorithms for a set of operations for approximate query processing. Besides, we present experimental results for the evaluation of the algorithms that we have proposed and implemented. We executed many experimental tests over real datasets, and the results demonstrate the effectiveness of our approach.