Spatial predicates evaluation on geohash-encoded geographical regions
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United States of America Patent
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May 26, 2020
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Aug 1, 2019
app pub date -
Mar 22, 2019
filing date -
Mar 25, 2016
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Abstract
A method of performing an evaluation of a spatial predicates for first and second regions includes receiving a first set of geohashes representing the first region, and receiving a second set of geohashes representing the second region. The method also includes for each geohash within the first set of geohashes: performing a respective pairwise evaluation of a first spatial primitive for the geohash within the first set and each of the geohashes within the second set to produce a set of first binary results corresponding to respective ones of the geohashes within the second set; and combining the set of first binary results using a first Boolean logic operator to produce one of a set of second binary results corresponding to respective ones of the geohashes within the first set. The method further includes combining the set of second binary results using a second Boolean logic operator to produce a third binary result corresponding to the first set of spatial primitives.
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