GeoDI: Geoscientific Data Integration

This report summarises the findings of the GeoDI project. Large volumes of geoscientific (i.e., geological and geophysical) datasets have been gathered by the Marine Institute and its partners over the past number of years, A key challenge now exists to derive maximum value from these very costly and valuable products by integrating these geoscientific datasets together, and with other resources such as biological, chemical, and environmental data. The project aimed to address this challenge by examining the critical issues involved in the integration of Irish marine geoscientific datasets, and by assessing tools and services for enhanced management, discovery, access, and analyses of geoscientific data.Funder: Marine Institut

Semantic Mediation as a Gateway to Interoperability, with a Case Study of the International Coastal Atlas Network (ICAN)

Basic research on semantic interoperability is just beginning to address support for spatial data and information. This is clearly important for data portals containing geographic information system (GIS) layers, as well as supplemental information, often with cartographic and decision support tools. Agreements on content/semantic interoperability of these resources can help to eliminate the problems of meaning, making searches between disparate, but mutually beneficial, projects feasible. In recent years significant momentum has occurred in the development of Internet resources for coastal environments, where 2.2 billion people live within a 100 km range. A key aspect of this trend has been the development of coastal web atlases, based on web-enabled GIS. However, current inventories within coastal atlases are insufficient for the purposes of networking between them. Each atlas has different classifications of data and information (e.g., critical information on coastal erosion that may be needed across a broad geographic region as supplied by several different atlases). New semantic web tools and evolvement of standard metadata descriptions and interfaces are opening a road to interoperate within atlases. This paper presents a new semantic mediation approach using ontologies and Open Geospatial Consortium standard interfaces.This is an author's manuscript version. The final version as presented can be found at: http://marinemetadata.org/community/publications/icangisci08Keywords: Coastal web atlases, Semantic mediation, International Coastal Atlas Network (ICAN), Coastal erosion, Geographic Information System (GIS

Médiation de qualité dans les systèmes d'information géographique

La prise de décision dans les domaines de l'aménagement du territoire, de la gestion des risques, de la gestion des transports, etc. repose sur des données géographiques. Ces données sont diverses et de qualités variables, car elles sont issues d'observations plus ou moins imparfaites du monde réel. Les Systèmes d'Information Géographique (SIG) actuels ne sont pas encore capables d'intégrer à la fois des sources de données et leurs qualités. Il devient impératif de surmonter ce problème et d'offrir un système d'information qui guide l'utilisateur dans le choix des données qui satisfont au mieux ses besoins en termes de qualité. L'objectif de la thèse est d'apporter une solution à ce problème en proposant un système d'intégration qui prenne en compte la qualité des données à intégrer. Le problème consistera à satisfaire plusieurs besoins : gérer des sources de données géographiques autonomes, et prendre en compte des opérateurs spatiaux ainsi que des informations de qualité.AIX-MARSEILLE1-BU Sci.St Charles (130552104) / SudocSudocFranceF

A metadata-driven geographic data mediator

Hermes-Lavoisier (Ed.)National audienceno abstrac