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this is an IST-FET project (2000-2004)
The general objective of the European REV!GIS project is:|
- To improve awareness and control on data quality, based on sharable concepts;
- To revise information, by restoring consistency, for better decision making.
The approach is to introduce more "intelligence" in GIS:
- To clearly identify which knowledge is required by each real application: goal(s), features,
objects, constraints and rules, limit of use ('ontological approach');
- To use all available knowledge (metadata, ancillary documents, etc.);
- To use robust representations, to reveal inconsistencies, to track conflicts,
to offer a "reasonable" revision.
- To experiment on a range of cases:
flooding, coast erosion, urban planning, landcover;
- To perform an 'ontological' study of each of these applications;
- To develop specific formalisms and algorithms; to apply them to these cases;
- To establish a long-term synergy for European skills in advanced GIS research;
- To promote the intellectual property of the project in the field of
Original bi-ontology approach, to overcome the issue of internal/external quality (producer's .vs. user's view), applied to difficult cases: multiply defined, or dynamic, or vague geographical features. Geographic information producers and users, can profit both to the conceptual breakthroughs of the project: logical monitoring of map specifications, pyramidal method for user concepts, legal aspects awareness, semantical approach of land classes, etc.
Several logical tools are developed, implemented, and successfully applied:
propositional based revision with removed-sets algorithms, for general case;
revision of pre-ordered beliefs, for multi-criteria cases ...
linear-constraint based revision suitable for propagation cases (flows, traffic, etc.) ...
concept lattices for fusion of class hierarchies, and multiply defined datasets;
fuzzy representation for a variety of spatial features, and ontology for these;
demonstration of most of these on a prototype, in a 'mediation' architecture aware of most recent standards:
W3C-XML family (incl. GML, OWL), ISO19100- family;
A Europe wide academic network now exists, in link with major actors of the domain:
mapping agencies, environmental institutes, SMEs in services or software publishing.
15 PhD defended between 2000 and 2006; 150 academic publications (2000-2005), a dozen specialised meetings,
6 special sessions in regular Conferences (ISSDQ, ESQARU, SDH), two Journal special issues, ...