Results 1 - 10 of 24

Filling the Gaps in Keyword-based Query Expansion for Geodata Retrieval

by Hartwig H. Hochmair
"... Query expansion describes the automated process of supplementing a user’s search with additional terms or geographic locations to make it more appropriate for the user's needs. Such process relies on the system’s knowledge about the relation between geographic terms and places. Geo-data reposit ..."
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Query expansion describes the automated process of supplementing a user’s search with additional terms or geographic locations to make it more appropriate for the user's needs. Such process relies on the system’s knowledge about the relation between geographic terms and places. Geo-data

R-trees: A Dynamic Index Structure for Spatial Searching

by Antonin Guttman - INTERNATIONAL CONFERENCE ON MANAGEMENT OF DATA , 1984
"... In order to handle spatial data efficiently, as required in computer aided design and geo-data applications, a database system needs an index mechanism that will help it retrieve data items quickly according to their spatial locations However, traditional indexing methods are not well suited to data ..."
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In order to handle spatial data efficiently, as required in computer aided design and geo-data applications, a database system needs an index mechanism that will help it retrieve data items quickly according to their spatial locations However, traditional indexing methods are not well suited

Automating the Semantic Annotation of Geodata

by Eva Marie Klien
"... Abstract. The ability to represent geospatial semantics is of great importance when building geospatial applications for the web. It will not only enhance discovery and retrieval of geographic information, but it will also enable its translation and reuse in contexts other than the original one. We ..."
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Abstract. The ability to represent geospatial semantics is of great importance when building geospatial applications for the web. It will not only enhance discovery and retrieval of geographic information, but it will also enable its translation and reuse in contexts other than the original one. We

Active Object Techniques for the Production of Multiple Map and Geodata Products from a Spatial Database

by P. G. Hardy - In ICA/ACI Conference Proceedings , 1999
"... Historically, map production has been an isolated task, compiling information from various sources to produce a particular cartographic product. This traditional view is now challenged by the availability of new environments which bring together databasing, object data modelling, image analysis, act ..."
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, and specifically highlights its capabilities for active representation, multiple geometry and active object selection, in order to explore the benefits and future directions of active object mapping. Recent advances in handling spatial objects allow for the first time the efficient storing and retrieval of a

Tisza River Information System (TRIS) – A GeoData Server and Spatially Enabled Internet Applications for Water Resources Management

by W. -a. Flügel A, B. Böhm A, C. Busch A, S. Kralisch A
"... Abstract – One of the objectives of the “Tisza River Project ” was the establishment of real management oriented exchange of data and information among the countries sharing the Tisza basin. This objective was achieved by developing the web-based Tisza River Information System (TRIS), designed by th ..."
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by the DGHM from the FSU-Jena. TRIS is based on Open Source Software (OSS) components comprising the object relational database management system (DBMS) PostgreSQL, and extended by a GIS component (PostGIS). TRIS is implemented as a GeoData Server containing GIS data layers, time series, documents

An Operational Metadata Framework for Searching, Indexing, and Retrieving . . .

by Ming-Hsiang Tsou - INFORMATION SERVICES ON THE INTERNET, IN SECOND INTERNATIONAL GISCIENCE 2002 , 2002
"... A comprehensive metadata scheme for distributed geographic information services should include multiple types of information services, including geodata objects, software components, and web map services. This paper examines the existing metadata standards and their implementation frameworks and pre ..."
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A comprehensive metadata scheme for distributed geographic information services should include multiple types of information services, including geodata objects, software components, and web map services. This paper examines the existing metadata standards and their implementation frameworks

1 The Use of Spatial Metadata for Information Retrieval in Peer-to-Peer Networks

by Thomas Vögele, Christoph Schlieder
"... Abstract: Geo-referenced data play an increasingly important role in many application areas. The result is a growing need for infrastructures that support the access and exchange of such data. Internet-based geodata servers and service-oriented geodata infrastructures focus on the exchange of GIS-ty ..."
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, to support data retrieval based on complex spatial queries in such networks, condensed but expressive spatial metadata are needed. The paper outlines a concept for spatial metadata based on qualitative spatial reference models, and their application in P2P networks. Geodata Servers and Geodata

The Use of Spatial Metadata for Information Retrieval in Peer-to-Peer Networks

by Thomas Vögele, Christoph Schlieder - In: Proceedings of the AGILE, Palma de mallorca , 2002
"... Geo-referenced data play an increasingly important role in many application areas. The result is a growing need for infrastructures that support the access and exchange of such data. Internet-based geodata servers and service-oriented geodata infrastructures focus on the exchange of GIS-type geod ..."
Abstract - Cited by 4 (1 self) - Add to MetaCart
Geo-referenced data play an increasingly important role in many application areas. The result is a growing need for infrastructures that support the access and exchange of such data. Internet-based geodata servers and service-oriented geodata infrastructures focus on the exchange of GIS

A Geo-Semantics Flyby

by Krzysztof Janowicz, Simon Scheider, Benjamin Adams
"... Abstract. Geospatial semantics as a research field studies how to publish, retrieve, reuse, and integrate geo-data, how to describe geo-data by conceptual models, and how to develop formal specifications on top of data structures to reduce the risk of incompatibilities. Geo-data is highly heterogene ..."
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Abstract. Geospatial semantics as a research field studies how to publish, retrieve, reuse, and integrate geo-data, how to describe geo-data by conceptual models, and how to develop formal specifications on top of data structures to reduce the risk of incompatibilities. Geo-data is highly

ON-BOARD GEO-DATABASE MANAGEMENT IN FUTURE EARTH OBSERVING SATELLITES

by Guoqing Zhou, Paul Kaufmann
"... In order to let the end-users can directly downlink satellite imagery that they specify area of interest (AOI), One of key challenging technologies is how the on-board data distributor autonomously retrieves the imagery according to user’s command as well as simultaneously retrieves the other data s ..."
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In order to let the end-users can directly downlink satellite imagery that they specify area of interest (AOI), One of key challenging technologies is how the on-board data distributor autonomously retrieves the imagery according to user’s command as well as simultaneously retrieves the other data
Results 1 - 10 of 24