Exact and Approximate Aggregation in Constraint Query
PODS, pp. 102-113, 1999.
machine learningspatial datavc dimensionquery language
We investigate the problem of how to extend constraint query languages with aggregate operators. We deal with standard relational aggregation, and also with aggregates specific to spatial ,data, such as volume. We study several approaches, including the addition of a new class of approximate aggregate operators which allow an error tolera...More
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Best Paper of PODS, 1999