最大空圆约束下的最邻近计算方法Nearest neighbor searching algorithm with largest empty circle constraint
闫超德,郭王,白建军,贺添,赵姗
摘要(Abstract)：
移动目标的最邻近查询是位置服务的重要内容之一。本文针对地理目标分布不均的情况,将离散点集的最大空圆参数引入到最邻近查询中,提出了最大空圆约束下的k-D树最邻近查询算法。通过实验证明该算法可以有效地减少节点访问次数,减少距离计算次数,从而提高最邻近的查询效率。进而将该算法应用于移动目标的k阶邻近查询中,可以有效地减少移动点在三角网中的定位次数,改善k阶邻近的查询效率。
关键词(KeyWords)： 移动目标;最大空圆;k-D树;最邻近查询;k阶邻近查询
基金项目(Foundation): 国家自然科学基金项目(40971238,40971213,41171310)
作者(Author): 闫超德,郭王,白建军,贺添,赵姗
DOI: 10.16251/j.cnki.1009-2307.2012.06.030
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