Automated Search and Management for Geographical Web Services
Ladda ner
Typ
Examensarbete för masterexamen
Master Thesis
Master Thesis
Program
Publicerad
2012
Författare
Sidsten, Daniel
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
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.
Beskrivning
Ämne/nyckelord
Datavetenskap (datalogi) , Computer Science