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  1. Proceedings of the 2005 workshop on Geographic information retrieval (GIR '05)
  2. Finding geodata that otherwise would have been forgotten- GeoXchange: a SDI-based portal for sharing free geodata
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Filtering mechanisms for the visualization of geo-referenced information
Detecting geographic locations from web resources
Automatically identifying and georeferencing street maps on the web
Geographical partition for distributed web crawling
An evaluation of a multidimensional visual interface for geographic information retrieval
Extracting metadata for spatially-aware information retrieval on the internet
Finding geodata that otherwise would have been forgotten- GeoXchange: a SDI-based portal for sharing free geodata
Geographic web search based on positioning expressions
Visualization and semantic analysis of geographic metadata
Indexing and ranking in Geo-IR systems
Ontology-based service discovery in spatial data infrastructures
Challenges and resources for evaluating geographical IR

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Finding geodata that otherwise would have been forgotten- GeoXchange: a SDI-based portal for sharing free geodata

Content Provider ACM Digital Library
Author Tschirner, Sven Zipf, Alexander
Abstract A key problem of small organizations like departments of geography, ecology, geodesy, architecture, landscape planning, archeology etc is, that they also produce - from time to time - some spatial data - mostly in small projects or master theses or PhD thesis. This data is usually not included in any spatial data infrastructure. Therefore we developed a GeoPortal - the geoXchange Portal - that gives the possibility to store, annotate and share such geodata produced by small institutions that do not have the resources to build up a SDI on their own. The portal is realized using open standards of OGC, ISO and W3C. It allows describing the geodata sets with metadata according to ISO 19115 (CORE) - as well as Dublin Core. This metadata can be queried using a Web Interface to an OGC conformant Catalog Service (CSW) and also using a graphical map interface (bounding-box) through a Web Map Service (WMS). Geodata itself can be uploaded to the portal directly though a transactional Web Feature Service (WFS) through which it also can be accessed. Uploaded data is made automatically available via the map query interface, too, in order to allow visual queries.
Starting Page 39
Ending Page 44
Page Count 6
File Format PDF
ISBN 1595931651
DOI 10.1145/1096985.1096996
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2005-11-04
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Sharing Metadata Spatial data infrastructure (sd)
Content Type Text
Resource Type Article
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