Title :
Clearinghouse activity for geodata obtaining in the World Wide Web
Author :
Liu, Qilun ; Zhou, Lizhu ; Chen, Jun
Author_Institution :
Dept. of Comput. Sci. & Technol., Tsinghua Univ., Beijing, China
Abstract :
Digital geodata are precious resources both for a nation and for a person. With the rapid development of networks such as the Information Highway and WWW, widely distributed geodata stimulate users´ needs. There is now an urgent appeal for the publication of the geodata. Because of the abundant information on the Internet, geodata may be difficult to discover and to use. In this article, we introduce a clearinghouse activity which can search for the proper geodata based on meta data using Z39.50 protocol. We also present some basic concepts about it and its working mechanism. We then discuss some key technologies to implement a clearinghouse node and ways to improve the service as well
Keywords :
Internet; geographic information systems; information resources; information retrieval systems; meta data; protocols; GIS; Information Highway; Internet; WWW; World Wide Web; Z39.50 protocol; clearinghouse activity; digital geodata; geographic information system; meta data; Acceleration; Computer science; Geographic Information Systems; Internet; Protocols; Road transportation; Search engines; Spatial databases; Web sites; World Wide Web;
Conference_Titel :
Communication Technology Proceedings, 2000. WCC - ICCT 2000. International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-6394-9
DOI :
10.1109/ICCT.2000.890926
