Posts In Category Articles
Disjointness Between Classes in an Ontology
on May 8, 2012 by Robert Stevens in Under Review, Comments (0)
Overview This KBlog describes disjointness in ontologies. The KBlog says what it is; says why you want it and describes how you get it. In brief, a disjointness axiom […]
Managing synonomy in OWL
on March 28, 2012 by Robert Stevens in Under Review, Comments (0)
Overview This article describes approaches to dealing with synonomy in ontologies written in the Web Ontology Language (OWL). synonomy is an important issue in ontologies as one of the […]
Higher Order Knowledge in Ontologies
on May 13, 2011 by Robert Stevens in Articles, Under Review, Comments (0)
Overview In this k-blog we look at another kind of statement found in an ontology, higher order knowledge. In this case it is orientated about statements about the class, […]
generalisation Statements in Ontologies
on by Robert Stevens in Articles, Under Review, Comments (0)
Overview Inn this kblog we talk about statements that are generalisations about a domain, but are not universally true. Much of domain knowledge can fall into this category of […]
Metadata in Ontologies
on by Robert Stevens in Articles, Comments (0)
Overview This kblog is about metadata for an ontology and the statements in an ontology. Metadata are another example of a kind of statement in an ontology. we divide […]
Types of Statement in an Ontology =
on by Robert Stevens in Under Review, Comments (2)
Overview An ontology or ontology-like artefact can contain a variety of types of statements about the domain being modelled, as well as statements about the artefact that is the […]
Do Cyclists pay tax? An investigation of roles and number.
on April 5, 2011 by Phillip Lord in Under Review, Comments (0)
Abstract Most long term cyclists in the UK face the accusation from other road users that, as they “don’t pay tax anyway”, then they should not be accorded with […]
Introduction: Health informatics terminologies and related resources
on February 10, 2011 by Alan Rector in Under Review, Comments (0)
Healthcare and medical terminology systems come in a sometimes bewildering variety of flavours and ‘standards’. Despite the similar names, there have been, and continue to be, a number […]
Is a class the same as its extent?
on January 14, 2011 by Phillip Lord and Uli Sattler in Articles, Reviewed, Comments (4)
Abstract While it is true that an ontology class defines a set of individuals, its extent, the reverse is not so. The class is not the same as its […]
Closing Down the Open World: Covering Axioms and Closure Axioms
on January 12, 2011 by Robert Stevens in Under Review, Comments (4)
OWL has an open world assumption. This means that just because we don’t say something doesn’t mean it isn’t true. For example, we have an ontology of amino acids […]