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Nearest-neighbor geographic search

机译:最近邻地理搜索

摘要

Disclosed herein is a method and apparatus for use in searching a geographic database to retrieve geographic objects one cell from a neighborhood of cells at a time. A cell neighborhood can be defined using a grid of cells and an initial, or center, point. A first neighborhood is identified based on its proximity to the initial search point, and corresponds to a first geographic area defined using the initial point and a distance from the initial search point in a number of directions. In a case that more than one cell neighborhood is used, each subsequent cell neighborhood is defined so that it excludes cells belonging to a previously-searched cell neighborhood. A subsequent neighborhood corresponds to a geographic area that is a distance from the initial point greater than the distance associated with a previously-searched neighborhood.
机译:本文公开了一种用于搜索地理数据库以一次从一个小区的邻域中检索一个小区的地理对象的方法和装置。可以使用单元格和初始或中心点定义单元邻域。基于第一邻域到初始搜索点的接近度来识别第一邻域,并且该第一邻域对应于使用初始点和在多个方向上距初始搜索点的距离定义的第一地理区域。在使用一个以上的小区邻域的情况下,定义每个随后的小区邻域,使得其排除属于先前搜索的小区邻域的小区。后续邻域对应于一个地理区域,该地理区域距初始点的距离大于与先前搜索的邻域关联的距离。

著录项

  • 公开/公告号US7882102B2

    专利类型

  • 公开/公告日2011-02-01

    原文格式PDF

  • 申请/专利权人 ALEXANDER VECHERSKY;

    申请/专利号US20070852973

  • 发明设计人 ALEXANDER VECHERSKY;

    申请日2007-09-10

  • 分类号G06F7/00;G06F17/30;

  • 国家 US

  • 入库时间 2022-08-21 18:07:51

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