Section: New Results

Logic and Cognition

Together with Célia da Costa Pereira of I3S, we have investigated syntactic belief revision operators [16] and goal-generation mechanisms [30] to make the practical implementation of a general BDI (Belief-Desire-Intention) model of agency based on possibility theory. Furthermore, we took part in a joint investigation with a research team, led by Cristiano Castelfranchi, of the CNR-ISTC in Rome on the issue of trust in multi-agent systems [21] . We also employed agent-based simulation to test a theory of human stupidity proposed by the late Italian economist Carlo Cipolla [52] ; our paper won the Best Paper Award at IAT 2014.

We carried on our investigation in an approach to RDF mining based on grammatical evolution and possibility theory, whose aim is to mine large RDF graphs by automatically generating and testing OWL 2 axioms based on the known facts. In particular, we addressed the problem of testing candidate OWL 2 axioms against the fact contained in an RDF base and proposed a novel scoring heuristics based on falsification and possibility theory [53] .

Together with Célia da Costa Pereira of I3S and Mauro Dragoni of FBK, Trento, who visited our team for three months from April to June 2014, we have proposed a novel approach to concept-level sentiment analysis based on fuzzy logic. Our system [31] , [89] participated in the Semantic Web Evaluation Challenge (SemWebEval) at ESWC 2014 and was the winner for Task 1 and Most Innovative Approach.

Together with Somsack Inthasone, Nicolas Pasquier and Célia da Costa Pereira of I3S, we developed a data warehouse collecting data for research on biodiversity [38] .

A work on electorcardiographic signal classification using evolutionary algorithms and neural networks carried out while still at the University of Milan, got published as a book chapter [65] .