A Study of Applying an Information Filtering Scheme to the Positioning System Using Address Information on Web and Spot Information in Cityscape

摘要

This paper describes a study of applying information filtering to the positioning system using address information on Web and spot information in cityscape. On the positioning procedure, the positioning system gets the search results which include address information of inputted spots from a Web search engine. The improved scheme is to apply the information filtering to the procedure, and can remove useless position information. Next, a new interface is studied for solving a problem caused when names of large buildings or chain stores are inputted. To evaluate the improved system, the experiments of the system are carried out in an urban area. It is shown that accuracy of the improved system is superior to that of GPS and the conventional system. Last, the results of field test using the new interface are shown. Although the new interface is expected to solve the problem of large buildings, the positioning performance of the improved system degrades from that of GPS.