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Automated Search and Management for Geographical Web Services

Daniel Sidsten
Göteborg : Chalmers tekniska högskola, 2012. 102 s.
[Examensarbete på avancerad nivå]

This thesis holds the result of a study in focused web-information search, retrieval and management of retrieved data. Focused web-information search means that the search is exclusive for one type of content or topic. The only topic examined in this search is OGC web-services. More specifically, URLs to OGC web-services are searched for. Of course, many of the techniques utilized and discussed in this thesis are of possible interest also for other topics. The OGC web-services are basically services for online geospatial data management,such as online maps and coverage data.
In detail this study examines how one can effectively locate a large amount of these OGC-services on the web. That is some techniques, such as meta-search and web-crawling are examined. Also after an evaluation of the methods examined, the most effective methods are combined into a search-system prototype. The search-system is made for autonomous, effective and stable retrieval and management of the location of the OGC web-services.
This work was carried out at Carmenta AB. The testing of retrieval techniques in this thesis have generated the location of a total of approximately 2600 online high-quality OGC-services. The prototype have only been partially developed, but it is estimated to be capable of discovery of approximately 3000 online services in a session of 33 hours.

Nyckelord: OGC web-services, URLs, Geospatial Data



Publikationen registrerades 2012-09-19. Den ändrades senast 2013-04-04

CPL ID: 163561

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