[GHM19a] Ontology-Based Representation and Reasoning about Precise and Imprecise Time Intervals
Conférence Internationale avec comité de lecture :
FUZZ-IEEE 2019 International Conference on Fuzzy Systems,
June 2019,
pp.8,
New Orleans,
USA,
Mots clés: Ontology, fuzzy, time
Résumé:
In this paper, we propose an ontology-based approach for representing and
reasoning about precise and imprecise time intervals. This approach is three
folds: (i) extending the 4D-fluents approach with new crisp and fuzzy
components, to represent precise and imprecise time intervals, and temporal
relations between them, (ii) extending the Allen's interval algebra to enable
reasoning about the handled temporal data, and (iii) creating a Fuzzy-OWL 2
ontology "TimeOnto" that, based on the extended Allen's interval algebra,
instantiate our 4D-fluents-based representation. The extension of the Allen's
algebra handles precise and imprecise time intervals to express precise (e.g.,
"Before") and imprecise (e.g., "Just before") temporal relations. Compared to
related work, our imprecise relations are personalized, in the sense that they
are not limited to a defined set of interval relations and their meanings are
determined by the domain expert. For instance, the Allen's relation "Before"
may be generalized in 5 imprecise relations, where "Before(1)" means "just
before" and gradually the time gap between the two intervals increases until
"Before(5)" which means "too long before". To enable this representation, we
propose an extension of the Vilain and Kautz's point algebra and a
redefinition of the Allen's relations by means of this extended algebra.
Unlike most related work, the resulting relations preserve many of the
desirable properties of the Allen's algebra. These relations can be used for
temporal reasoning by means of a transitivity table. We describe a
prototype based on TimeOnto that infers new relations using a set of SWRL and
fuzzy IF-THEN rules. This prototype was integrated in an ontology-based memory
prosthesis.