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Fast set intersection and two-patterns matching. (English) Zbl 1207.68270
Summary: We present a new problem, the fast set intersection problem, which is to preprocess a collection of sets in order to efficiently report the intersection of any two sets in the collection. In addition we suggest new solutions for the two-dimensional substring indexing problem and the document listing problem for two patterns by reduction to the fast set intersection problem.

MSC:
68T10 Pattern recognition, speech recognition
68P20 Information storage and retrieval of data
68W05 Nonnumerical algorithms
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