Search Results for author: Valentina Gliozzi

Found 11 papers, 0 papers with code

From Common Sense Reasoning to Neural Network Models through Multiple Preferences: an overview

no code implementations10 Jul 2021 Laura Giordano, Valentina Gliozzi, Daniele Theseider Dupré

In this paper we discuss the relationships between conditional and preferential logics and neural network models, based on a multi-preferential semantics.

Common Sense Reasoning

A conditional, a fuzzy and a probabilistic interpretation of self-organising maps

no code implementations11 Mar 2021 Laura Giordano, Valentina Gliozzi, Daniele Theseider Dupré

In particular, we show that the input/output behavior of a Self-Organising Map after training can be described by a fuzzy description logic interpretation as well as by a preferential interpretation, based on a concept-wise multipreference semantics, which takes into account preferences with respect to different concepts and has been recently proposed for ranked and for weighted defeasible description logics.

On a plausible concept-wise multipreference semantics and its relations with self-organising maps

no code implementations30 Aug 2020 Laura Giordano, Valentina Gliozzi, Daniele Theseider Dupré

Inthispaperwedescribeaconcept-wisemulti-preferencesemantics for description logic which has its root in the preferential approach for modeling defeasible reasoning in knowledge representation.

Reasoning about Typicality and Probabilities in Preferential Description Logics

no code implementations20 Apr 2020 Laura Giordano, Valentina Gliozzi, Antonio Lieto, Nicola Olivetti, Gian Luca Pozzato

In this work we describe preferential Description Logics of typicality, a nonmonotonic extension of standard Description Logics by means of a typicality operator T allowing to extend a knowledge base with inclusions of the form T(C) v D, whose intuitive meaning is that normally/typically Cs are also Ds.

Blocking

A reconstruction of the multipreference closure

no code implementations5 May 2019 Laura Giordano, Valentina Gliozzi

Here, we reconstruct the notion of MP-closure in the propositional case and we show that it is a natural variant of Lehmann's lexicographic closure.

Relation

Reasoning about exceptions in ontologies: from the lexicographic closure to the skeptical closure

no code implementations8 Jul 2018 Laura Giordano, Valentina Gliozzi

Reasoning about exceptions in ontologies is nowadays one of the challenges the description logics community is facing.

Reasoning about multiple aspects in DLs: Semantics and Closure Construction

no code implementations18 Jan 2018 Laura Giordano, Valentina Gliozzi

Starting from the observation that rational closure has the undesirable property of being an "all or nothing" mechanism, we here propose a multipreferential semantics, which enriches the preferential semantics underlying rational closure in order to separately deal with the inheritance of different properties in an ontology with exceptions.

A strengthening of rational closure in DLs: reasoning about multiple aspects

no code implementations1 Apr 2016 Valentina Gliozzi

We propose a logical analysis of the concept of typicality, central in human cognition (Rosch, 1978).

Rational Closure in SHIQ

no code implementations8 Jun 2014 Laura Giordano, Valentina Gliozzi, Nicola Olivetti, Gian Luca Pozzato

We define a notion of rational closure for the logic SHIQ, which does not enjoys the finite model property, building on the notion of rational closure introduced by Lehmann and Magidor in [23].

On Rational Closure in Description Logics of Typicality

no code implementations5 May 2013 Laura Giordano, Valentina Gliozzi, Nicola Olivetti, Gian Luca Pozzato

We show that this semantics captures exactly a notion of rational closure which is a natural extension to Description Logics of Lehmann and Magidor's original one.

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