André Santanchè

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The advances of multimedia models and tools popularized the access and production of multimedia contents: in this new scenario, there is no longer a clear distinction between authors and end-users of a production. These user-authors often work in a collaborative way. As end-users, they collectively participate in interactive environments, consuming(More)
This paper discusses ongoing research on scientific workflows at the Institute of Computing, University of Campinas (IC - UNICAMP) Brazil. Our projects with bio-scientists have led us to develop a scientific workflow infrastructure named WOODSS. This framework has two main objectives in mind: to help scientists to specify and annotate their models and(More)
The Web is evolving from a space for publication/consumption of documents to an environment for collaborative work, where digital content can travel and be replicated, adapted, decomposed, fusioned, and transformed. We call this the fluid Web perspective. This view requires a thorough revision of the typical document-oriented approach that permeates content(More)
The Semantic Web has opened new horizons in exploring Web func-tionality. One of the many challenges is to proactively support the reuse of digital artifacts stored in repositories all over the world. Our goal is to contribute towards this issue, proposing a mechanism for describing and discovering ar-tifacts called Digital Content Components (DCCs). DCCs(More)
Folksonomies are increasingly adopted in web systems. These “social taxonomies”, which emerge from collaborative tagging, contrast with the formalism and the systematic creation process applied to ontologies. However, they can play complementary roles, as the knowledge systematically formalized in ontologies by a restricted group can be enriched by the(More)
Many web-based public repositories are widely adopting tag-based metadata approaches as their main classification mechanism. This phenomenon is fostering initiatives to improve the semantic interpretation of tags, usually involving two main entities: "social ontologies", which emerges from the collaborative tagging (folksonomies), and formal ontologies. In(More)