Exact and Approximate Aggregation in Constraint Query

    PODS, pp. 102-113, 1999.

    Cited by: 28|Bibtex|Views23|Links
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    Keywords:
    machine learningspatial datavc dimensionquery language

    Abstract:

    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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