发明名称 Method and apparatus for an accelerated radius search
摘要 A method and apparatus for performing an accelerated radius search. A search category is built having a density value corresponding to a geographic area. A first search radius is generated based upon the category, and the first search radius is used to perform a first search. If the first search returns an insufficient number of results, a second search radius is generated by using an heuristic to increase the first search radius, and the second search radius is used to perform a second search. The search is repeated until a desired results set is returned.
申请公布号 AU5237099(A) 申请公布日期 2000.03.14
申请号 AU19990052370 申请日期 1999.07.27
申请人 ZIP2 发明人 ELON MUSK;KING-SUN WAI;LEO CHAN
分类号 G01C21/34 主分类号 G01C21/34
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