Comments on: negation of relation names http://okeanos.wordpress.com/2009/06/25/negation-of-relation-names/ A Blog by Meena Kharatmal Tue, 01 Dec 2009 05:36:24 +0000 http://wordpress.com/ hourly 1 By: Meena Kharatmal http://okeanos.wordpress.com/2009/06/25/negation-of-relation-names/#comment-1224 Meena Kharatmal Wed, 22 Jul 2009 12:55:56 +0000 http://okeanos.wordpress.com/?p=293#comment-1224 I should also mention about the paper recommended by Werner: Ceusters W, Elkin P, Smith B. Negative Findings in Electronic Health Records and Biomedical Ontologies: A Realist Approach International Journal of Medical Informatics 2007;76:326-333 This paper explains how negation relations can be represented in the form of "lacks". prokaryotes lacks nucleus with respect to consists of at time t. I should also mention about the paper recommended by Werner: Ceusters W, Elkin P, Smith B. Negative Findings in Electronic Health Records and Biomedical Ontologies: A Realist Approach International Journal of Medical Informatics 2007;76:326-333

This paper explains how negation relations can be represented in the form of “lacks”.

prokaryotes lacks nucleus with respect
to consists of at time t.

]]> By: Meena Kharatmal http://okeanos.wordpress.com/2009/06/25/negation-of-relation-names/#comment-1223 Meena Kharatmal Wed, 22 Jul 2009 12:47:48 +0000 http://okeanos.wordpress.com/?p=293#comment-1223 That information is very useful. Thanks Robert. That information is very useful. Thanks Robert.

]]> By: Robert Hoehndorf http://okeanos.wordpress.com/2009/06/25/negation-of-relation-names/#comment-1222 Robert Hoehndorf Wed, 22 Jul 2009 11:59:55 +0000 http://okeanos.wordpress.com/?p=293#comment-1222 There are actually a number of papers out about negation in ontologies: ontology.buffalo.edu/medo/negative_findings.pdf by Werner, and some more recent by Alan Rector (I think at last years OWLED). There are actually a number of papers out about negation in ontologies: ontology.buffalo.edu/medo/negative_findings.pdf by Werner, and some more recent by Alan Rector (I think at last years OWLED).

]]> By: gnowgi http://okeanos.wordpress.com/2009/06/25/negation-of-relation-names/#comment-1199 gnowgi Fri, 26 Jun 2009 03:29:25 +0000 http://okeanos.wordpress.com/?p=293#comment-1199 Given P is a proposition, ~P is the negation of the proposition. CG also takes care of this by negating a graph. Given P is a proposition, ~P is the negation of the proposition. CG also takes care of this by negating a graph.

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