Archive For 2013
Nine Variations on two Pictures: What’s in an Arrow Between two Nodes
on October 10, 2013 by Robert Stevens in Under Review, Comments (0)
Overview When designing an ontology, we often start by drawing some pictures, like the one below. This is a good starting point: it allows us to agree on the […]
An object lesson in choosing between a class and an object
on August 16, 2013 by Robert Stevens in Under Review, Comments (0)
Overview The Web Ontology Language (OWL) and other knowledge representation languages allow an ontologist to distinguish between classes of individuals and the individuals themselves. It is not always obvious […]
Modelling in multiple dimensions is great in so many ways
on August 15, 2013 by Robert Stevens in Under Review, Comments (0)
Overview We describe what multi-dimensional modelling is, why it’s good for you, and how it works in OWL. The Authors Uli Sattler and Robert Stevens Information Management and BioHealth […]
Friends and Family: Exploring Transitivity and Subproperties
on August 8, 2013 by Sean Bechhofer in Uncategorized, Under Review, Comments (0)
Summary An exploration of the relationship between subproperties and property characteristics, in particular transitivity. Author Sean Bechhofer Information Management Groups School of Computer Science University of Manchester Oxford Road […]
Common reasons for ontology inconsistency
on June 12, 2013 by Samantha Bail in Articles, Comments (0)
Summary Following on from the previous Ontogenesis article “(I can’t get no) satisfiability” (http://ontogenesis.knowledgeblog.org/1329), this post explores common reasons for the inconsistency of an ontology. Inconsistency is a severe error […]
Trivially satisfiable classes
on May 23, 2013 by Robert Stevens in Under Review, Comments (0)
Summary We are used to having an automated reasoner tell us when we’ve described an impossibility in our ontologies. In this case, it is possible to change the axioms […]
(I can’t get no) satisfiability
on May 9, 2013 by Robert Stevens in Under Review, Comments (0)
Summary When talking about OWL ontologies and automated reasoning, the words (un)satisfiability and (in)consistency are bandied about like nobody’s business. We also discuss the less commonly used word incoherence. […]
Post-coordination: Making things up as you go along
on April 5, 2013 by Robert Stevens in Under Review, Comments (0)
Summary Pre- and post-coordination are notions that came out of SNOMED and concerns how the vast number of terms needed for coding, in SNOMED’s case, medical records; can one […]
Why use an ontology?
on March 18, 2013 by Robert Stevens in Under Review, Comments (0)
Summary The Ontogenesis KBlog is all about using ontologies within biology, medicine and health from “what is an ontology?” to the finer detail of various representation problems and aplication […]