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2022
Ontology refers to the nature of being and existence or the nature of reality. Relational ontologies refer to a particular understanding of ontology which gives primacy to the relations between entities as a constitutive element of their existence. Put another way, entities are what they are because of their relations with other entities.
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Ontology refers to the nature of being and existence or the nature of reality. Relational ontologies refer to a particular understanding of ontology which gives primacy to the relations between entities as a constitutive element of their existence. Put another way, entities are what they are because of their relations with other entities.
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Formalising Ontologies and Their Relations
1999Ontologies allow the abstract conceptualisation of domains, but a given domain can be conceptualised through many different ontologies, which can be problematic when ontologies are used to support knowledge sharing. We present a formal account of ontologies that is intended to support knowledge sharing through precise characterisations of relationships
Trevor J. M. Bench-Capon, Grant Malcolm
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An ontology-extended relational algebra
Proceedings Fifth IEEE Workshop on Mobile Computing Systems and Applications, 2004Heterogeneous relational databases being integrated vary widely in how the same data is represented. We propose the notion of an ontology extended relation (OER). An OER contains an ordinary relation as well as an associated ontology that conveys semantic meaning about the terms being used. We extend the relational algebra to query OERs.
BONATTI, PIERO ANDREA +2 more
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Ontology-Aware Biomedical Relation Extraction
2022Motivation Automatically extracting relationships from biomedical texts among multiple sorts of entities is an essential task in biomedical natural language processing with numerous applications, such as drug development or repurposing, precision medicine, and other biomedical tasks requiring knowledge discovery ...
Ahmad Aghaebrahimian +2 more
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On the discovery of subsumption relations for the alignment of ontologies
Journal of Web Semantics, 2010For the effective alignment of ontologies, the subsumption mappings between the elements of the source and target ontologies play a crucial role, as much as equivalence mappings do. This paper presents the "Classification-Based Learning of Subsumption Relations" (CSR) method for the alignment of ontologies. Given a pair of two ontologies, the objective
Vassilis Spiliopoulos +2 more
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From Ontology to Relational Databases
2004The semantic web envisions a World Wide Web in which data is described with rich semantics and applications can pose complex queries. Ontologies, a cornerstone of the semantic web, have gained wide popularity as a model of information in a given domain that can be used for many purposes, including enterprise integration, database design, information ...
Anuradha Gali +3 more
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Ontology of units of measure and related concepts
Semantic Web, 2013This paper describes the Ontology of units of Measure and related concepts (OM), an OWL ontology of the domain of quantities and units of measure. OM supports making quantitative research data more explicit, so that the data can be integrated, verified and reproduced. The various options for modeling the domain are discussed.
Hajo Rijgersberg +2 more
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The relations of logic and semantics to ontology
Journal of Philosophical Logic, 1974We have employed our semantical theory to investigate the matter of the ontological commitment of logic and semantics, and have found the following results: (i) The logical predicates, such as “or” and “entials”, are about statements not about any other objects.
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Relational Crossover in Evolutionary Ontologies
2015In this paper we introduce a new genetic operator, namely relational crossover applied to evolutionary ontologies recently defined. Also we demonstrate that the relations preserve properties like reflexivity, irreflexivity, symmetry, antisymmetry, asymmetry, transitivity after applying relational crossover operator.
Oliviu Matei +2 more
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Probabilistic Ontologies and Relational Databases
2005The relational algebra and calculus do not take the semantics of terms into account when answering queries. As a consequence, not all tuples that should be returned in response to a query are always returned, leading to low recall. In this paper, we propose the novel notion of a constrained probabilistic ontology (CPO).
Octavian Udrea +3 more
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