COMPUTER-IMPLEMENTED METHODS AND SYSTEMS FOR MULT-LEVEL GEOGRAPHIC QUERY
摘要
According to one aspect of the present disclosure, a computer-implemented method is provided for processing a query for points of interest (POIs) using a hierarchical grid structure representing a geographic area. The method includes receiving a query for POIs; defining a query footprint for the query based on a location corresponding to the query, wherein the query footprint comprises query spatial identifiers for a plurality of levels of the hierarchical grid structure; matching the query spatial identifiers with one or more POI spatial identifiers organized into a plurality of indexes, wherein each one of the plurality of indexes comprises an index of the POI spatial identifiers for one of the plurality of levels; and providing an output specifying one or more POIs corresponding to the matched POI spatial identifiers.
申请公布号
WO2011081912(A1)
申请公布日期
2011.07.07
申请号
WO2010US60224
申请日期
2010.12.14
申请人
MAPQUEST, INC.;LAURENZO, TERRY, M.;NESBITT, DAVID, W.;BEYELER, ERIC
发明人
LAURENZO, TERRY, M.;NESBITT, DAVID, W.;BEYELER, ERIC