A web-based spatial data access system using semantic R-trees

被引：12
|
作者：
Chen, SC [1 ]
Wang, XR
Rishe, N
Weiss, MA
机构：
[1] Florida Int Univ, Sch Comp Sci, Miami, FL 33199 USA
[2] Microsoft Corp, Redmond, WA 98052 USA
来源：
INFORMATION SCIENCES | 2004年 / 167卷 / 1-4期
基金：
美国国家科学基金会; 美国国家航空航天局;
关键词：
spatial data access; web-based system; semantic R-tree;
D O I：
10.1016/j.ins.2003.07.019
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
With the increasing use of geographical data in real-world applications, Geographic Information Systems (GISs) have recently emerged as a fruitful area for research. In order to provide information to a multitude of users, the World Wide Web (WWW) techniques have been integrated into GISs. A high-performance web-based GIS, called TerraFly, has been developed in order to provide web-based GIS accesses to the general public. The design of TerraFly considers two major aspects: (1) the system architecture including client, database server, proxy server and information server; and (2) the semantic R-tree data structure and semantic queries. The system architecture utilizes the existing resources to achieve maximum performance by using the "Internally Distributed Multithreading (IDMT)" technique. The spatial access method, semantic R-trees, is used to search for an object, based on both spatial and semantic information. System performance results are presented and analyzed. Reducing network traffic to achieve faster response to users is also discussed. (C) 2003 Elsevier Inc. All rights reserved.
引用
收藏
页码：41 / 61
页数：21
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