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Title: Hierarchical constraint satisfaction in spatial databases
Authors: Papadias, Dimitris
Kalnis, Panagiotis
Mamoulis, Nikos
Keywords: Spatial databases
Geographic information systems
Constraint satisfaction problems
Issue Date: 1999
Citation: Proceedings of the 16th Annual National Conference on Artificial Intelligence, Orlando, FL, USA, 18-22 July, AAAI, Menlo Park, CA, USA, 1999, p. 142-147
Abstract: Several content-based queries in spatial databases and geographic information systems (GISs) can be modelled and processed as constraint satisfaction problems (CSPs). Regular CSP algorithms, however, work for main memory retrieval without utilizing indices to prune the search space. This paper shows how systematic and local search techniques can take advantage of the hierarchical decomposition of space, preserved by spatial data structures, to efficiently guide search. We study the conditions under which hierarchical constraint satisfaction outperforms traditional methods with extensive experimentation.
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