支持空间数据移动查询的索引研究  

Research on Matching Query Based on Moving Spatial Keywords

作　　者：张素智[1] 赵亚楠[1] 杨芮[1] 

机构地区：[1]郑州轻工业学院计算机与通信工程学院,郑州450002

出　　处：《湖北民族学院学报（自然科学版）》2017年第4期423-428,共6页Journal of Hubei Minzu University(Natural Science Edition)

基　　金：国家自然科学基金项目(61672470)

摘　　要：随着智能移动设备的普及,空间数据也随之呈现出几何级增长,结合空间对象位置和关键字的查询越来越受到人们的关注.然而,在之前的大量研究中多是假设空间词为不变的,但是在实际生活中,空间对象的位置有许多是移动的,这就可能导致查询结果不符合实际需求.针对上述状况,提出一种支持移动空间关键词查询方法.经实验验证,该方法具备一定的实用性,且查询效率有较大的提高.Along with the popularization of intelligent mobile devices, the spatial data also present a geo- metric growth.With the query of spatial object position and keywords,more and more people pay attention to it.However,in previous studies,it is assumed that the spatial keywords are invariant,but in real life, many of the spatial objects are moved,which may make the query results fail to meet the actual needs.Ai-ming at the above situation, this paper proposes a query method to support mobile space keywords. The ex-periments show that the proposed method has some practicality, and the query accuracy has been greatly improved.

关 键 词：空间数据 移动空间词查询 APR-tree 空间关键词 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]