Alessio Bosca

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In this paper a new approach to ontology visualization is introduced, using a more than 3-dimensional space. The ontology information is represented on a 3D view-port enriched by visual cues. A preliminary application based on the presented principles is described, and results show that the approach is feasible and can actually lead to a more effective(More)
AIM Retrorectal tumours are a rare and complex entity in adults and children. They present a varied symptomatology and their treatment is very different according to their histology. We aimed to evaluate our experience of tumours of the retrorectal space. METHOD Forty patients with retrorectal tumours were divided into two groups according to age. The(More)
Ontology visualization and exploration is not a trivial task as many issues can affect the effectiveness of interactions. As ontologies are, in the general case, quite connected graphs where concepts are the nodes and semantic relationships the edges, the problems include space allocation, edge superposition, scene over-crowding, etc. In this paper we(More)
This paper presents the participation of the CACAO prototype to the Log Analysis for Digital Societies (LADS) task of LogCLEF 2009 track. CACAO (Cross-language Access to Catalogues And On-line libraries) is an EU project devoted to enabling cross-language access to the contents of a federation of digital libraries with a set of software tools for(More)
Ontology exploration or modelling becomes a challenging task when knowledge domains are huge and involve many relationships and restrictions. In such circumstances the ability to inspect and modify only specific parts of a given model may enable designers to achieve better results, by focusing on limited subsets of the domain. The work proposed in this(More)
In this paper, we propose a novel approach for inspecting and editing ontologies using a 3D space, where information is represented on a 3D viewport enriched by several visual cues. This approach aims at tackling space allocation issues for ontology visual models by adopting a dynamic collapsing mechanism and different views, at different granularities, for(More)
The introduction of the semantic Web paradigm in service-oriented architectures enables explicit representation and reasoning about services, via a semantically rich description of their operations. We propose an approach towards service selection and composition based upon the interpretation of user requests expressed through an informal human-computer(More)
In our participation to the 2010 LogCLEF track we focused on the analysis of the European Library (TEL) logs and in particular we experimented with the identification of the natural language used in the queries. Language identification is in fact a key task within Cross Language Information Retrieval systems and the challenge is particularly difficult in(More)