Giorgio De Felice

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Crowdsensing can provide real time and detailed information about rapidly evolving crisis situations to facilitate rapid response and effective resource allocation. But while challenges such as heterogeneity of data content and quality, asynchronicity, and volume call for robust data integration and interpretation capabilities, situation awareness in(More)
In this paper, we propose an extension of existing geographic information systems to support querying-by-sketch. It makes use of a particular class of queries, called qualitative spatial configuration queries, to match sketch-maps against spatial datasets. After analyzing several approaches, we identify the development of a dedicated qualitative layer as(More)
This article suggests a theory of egocentric semantic reference systems for human observations of affordances that can be used to semantically account for subjective human observations on the web. Based on the perceptual theory of affordances, which suggests that humans perceive the potential actions the environment affords, an egocentric semantic reference(More)
We propose a hybrid geometric-qualitative spatial reasoning system that is able to simultaneously deal with input information that is partially given geometrically and partially qualitatively using spatial relations of different qualitative spatial calculi. The reasoning system combines a geometric reasoning component based on computational geometry methods(More)
Spatial data representation and the possibility of making spatial reasoning is essential in the field of Artificial Intelligence. There has been considerable research on spatial representations which are based on metric measurements, this research has led to the development of Geographic Information Systems (GIS). In the broadest sense, the term describes(More)
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