Bertrand De Longueville

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The emergence of innovative web applications, often labelled as Web 2.0, has permitted an unprecedented increase of content created by non-specialist users. In particular, Location-based Social Networks (LBSN) are designed as platforms allowing the creation, storage and retrieval of vast amounts of georeferenced and user-generated contents. LBSN can thus be(More)
Geographical Information Science (GI-Sc) has a new rising star and buzz-word: Volunteered Geographic Information (VGI). VGI describes a phenomenon that transfers the principles found in the Internet-based user-driven content of Web 2.0 to the particular case of geospatial data and information. As a research topic, this highly diverse data-source sees the(More)
A set of developments within the field of geosensors is to engage citizens to act as sensors, thus providing so-called Volunteered Geographic Information (VGI). There is a long tradition of non specialists contributing to the collection of geo-referenced information. Furthermore thanks to recent convergence of greater access to broadband connections, the(More)
Digital Earth is a powerful metaphor for the organisation and access to digital information through a multi-scale 3D representation of the globe. Progress made since Al Gore's speech gave a concrete body to this vision. However, this body is not yet self-aware: a better integration of the temporal and voluntary dimension is needed to better portray the(More)
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