Plausible Reasoning about EL-Ontologies using Concept Interpolation

• URL: http://arxiv.org/abs/2006.14437v1
• Date: Thu, 25 Jun 2020 14:19:41 GMT
• Title: Plausible Reasoning about EL-Ontologies using Concept Interpolation
• Authors: Yazm\'in Ib\'a\~nez-Garc\'ia, V\'ictor Guti\'errez-Basulto, Steven Schockaert
• Abstract summary: We propose an inductive mechanism which is based on a clear model-theoretic semantics, and can thus be tightly integrated with standard deductive reasoning. We focus on inference, a powerful commonsense reasoning mechanism which is closely related to cognitive models of category-based induction.
• Score: 27.314325986689752
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Description logics (DLs) are standard knowledge representation languages for modelling ontologies, i.e. knowledge about concepts and the relations between them. Unfortunately, DL ontologies are difficult to learn from data and time-consuming to encode manually. As a result, ontologies for broad domains are almost inevitably incomplete. In recent years, several data-driven approaches have been proposed for automatically extending such ontologies. One family of methods rely on characterizations of concepts that are derived from text descriptions. While such characterizations do not capture ontological knowledge directly, they encode information about the similarity between different concepts, which can be exploited for filling in the gaps in existing ontologies. To this end, several inductive inference mechanisms have already been proposed, but these have been defined and used in a heuristic fashion. In this paper, we instead propose an inductive inference mechanism which is based on a clear model-theoretic semantics, and can thus be tightly integrated with standard deductive reasoning. We particularly focus on interpolation, a powerful commonsense reasoning mechanism which is closely related to cognitive models of category-based induction. Apart from the formalization of the underlying semantics, as our main technical contribution we provide computational complexity bounds for reasoning in EL with this interpolation mechanism.

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