A Semantic Digital Library of Urban Models and Resources
Funded by SER/COST
Applicants: Gilles Falquet, Laurent Moccozet
Researchers: Camille Tardy, Gilles Falquet, Laurent Moccozet
The sustainable development concept requires that urban projects take into account and integrate multiple fields of knowledge such as construction, roads and transport, air and water quality, energy, etc. During the last decades, researchers and practitioners have devised numerous models to reason about situations and projects, or to perform simulations in all these domains. However, these models have been developed independently and hence they are hard to interconnect, thus it is difficult to build decision-support or visualization tools that rely on several models. It is generally recognized that explicitly exposing the concepts that a model refers to is a first, and necessary, step toward interoperation. Thus this research will concentrate on the conceptual description of the models and their interconnection.
The aim of this project is to create a semantic digital library system for storing and interconnecting urban models and resources. The term semantic refers here to the fact that each model will be semantically described by linking it to the concepts it deals with. These concepts will be found in an conceptual layer made of several aligned ontologies. An ontology of 3D city objects (derived from CityGML) will be at the heart of the conceptual layer.
The digital library will also store interconnection resources that indicate how to interconnect two models. A particular care will be devoted to defining several types of interconnectors, such as concept mappings, articulation (mediator) concepts, but also algorithmic data mapping (pipes and filters), etc.
The library will be equipped with a web interface through which users will import models and resources, search and compare them, build and store interconnection resources.
The usability and usefulness of the system will be demonstrated by using it to assemble a 3D visualization tool that will display, within a 3D city model, results obtained from other models, such as air quality, transport, or energy consumption.