]> 2008/06/10 OpenCyc Knowledge Base Copyright© 2001-2008 Cycorp, Inc., http://www.cyc.com/, Austin, TX, USA This file contains an OWL representation of information contained in the OpenCyc Knowledge Base. The content of this OWL file is licensed under the Creative Commons Attribution 3.0 license whose text can be found at http://creativecommons.org/licenses/by/3.0/legalcode. The content of this OWL file, including the OpenCyc content it represents, constitutes the "Work" referred to in the Creative Commons license. The terms of this license equally apply to, without limitation, renamings and other logically equivalent reformulations of the content of this OWL file (or portions thereof) in any natural or formal language, as well as to derivations of this content or inclusion of it in other ontologies. externalID A unique, language-neutral, variable-sized identifier for a concept that can be used to refer unambiguously to that concept across OWL exports or across Cyc inference engines. label A natural-language representation for a concept that is both human readable and readable by the Cyc inference engine. These terms are not guaranteed to refer to the same concept across time but are guaranteed to be consistent within a particular OWL export. Use 'cycAnnot:externalID' for unambiguously referring to a concept across OWL exports or across Cyc inference engines. knowledge representation CW KnowledgeRepresentation-CW The collection of conceptual works consisting of formally represented knowledge. http://en.wikipedia.org/wiki/Knowledge_representation KR work upwardly closed The collection of formally expressed works of knowledge representation in which every term referenced in the work is also defined in the work. KRWork-UpwardlyClosed ObjectType The collection of all collections that are &quot;object-like&quot; in at least one respect. A collection <code><b>COL</b></code> is object-like just in case there is some sense of 'part' according to which any (or nearly any) given proper part of an instance of <code><b>COL</b></code> is <i>not</i> itself an instance of <code><b>COL</b></code>; when this happens <code><b>COL</b></code> is said to be object-like with respect to that sense of 'part'. <p/> More precisely, for a collection <code><b>COL</b></code> to be an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a> it is sufficient that there be some specialization <code><b>PARTPRED</b></code> of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwgfukKs8QdePzLB9nLNpTw" class="cyc_term">properParts</a> such that, for any <code><b>OBJ1</b></code> and <code><b>OBJ2</b></code>, if <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> <b>OBJ1</b> <b>COL</b>)</code> and <code>(<b>PARTPRED</b> <b>OBJ1</b> <b>OBJ2</b>)</code> both hold, then <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> <b>OBJ2</b> <b>COL</b>)</code> does <i>not</i> hold. (Also sufficient for <code><b>COL</b></code>'s being an object-type is that there be some specialization <code><b>INVPARTPRED</b></code> of the <i>inverse</i> of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwgfukKs8QdePzLB9nLNpTw" class="cyc_term">properParts</a> (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWHsNJwpEbGdrcN5Y29ycA" class="cyc_term">genlInverse</a>) such that <code>(<b>INVPARTPRED</b> <b>OBJ2</b> <b>OBJ1</b>)</code>, with everything else remaining the same as above.) Note that neither of the above sufficient conditions for <code><b>COL</b></code>'s being an object-type is strictly necessary: some exceptions are allowed. Thus as long as either one of the above conditionals holds in <i>nearly</i> all cases, <code><b>COL</b></code> should be considered an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a>. <p/> Here are two examples. Consider <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViVwZwpEbGdrcN5Y29ycA" class="cyc_term">Automobile</a>. Take an instance of that, say my car. Now consider one of the proper <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj5FpwpEbGdrcN5Y29ycA" class="cyc_term">physicalParts</a> of my car, say the steering wheel. The steering wheel is <i>not</i> an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViVwZwpEbGdrcN5Y29ycA" class="cyc_term">Automobile</a>. And the same would be true for any proper physical part of any car. So <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViVwZwpEbGdrcN5Y29ycA" class="cyc_term">Automobile</a> is an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a>. Consider <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjyV5wpEbGdrcN5Y29ycA" class="cyc_term">CalendarYear</a>. No proper <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWn4OZwpEbGdrcN5Y29ycA" class="cyc_term">timeSlices</a> of a year is itself a year. So <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjyV5wpEbGdrcN5Y29ycA" class="cyc_term">CalendarYear</a> is an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a>. <p/> See <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVir35wpEbGdrcN5Y29ycA" class="cyc_term">StuffType</a> for the contrasting (though not disjoint) notion of being stuff-like. type of object PropositionalConceptualWork written or spoken work A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwClAZJwpEbGdrcN5Y29ycA" class="cyc_term">ConceptualWork</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv5L5vZwpEbGdrcN5Y29ycA" class="cyc_term">PropositionalConceptualWork</a> is an abstract work constituted at least in part by propositional information. Propositional information is information which has a truth value in some context (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA7JwpEbGdrcN5Y29ycA" class="cyc_term">Proposition</a>). Typically, instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv5L5vZwpEbGdrcN5Y29ycA" class="cyc_term">PropositionalConceptualWork</a> will be works whose instantiations are composed of (or merely contain) one or more spoken or written sentences. Positive examples of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv5L5vZwpEbGdrcN5Y29ycA" class="cyc_term">PropositionalConceptualWork</a> include any instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwIgO8pwpEbGdrcN5Y29ycA" class="cyc_term">ProseLiteraryWork_CW</a> (including instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvxfXtJwpEbGdrcN5Y29ycA" class="cyc_term">AcademicEssay</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvzHRG5wpEbGdrcN5Y29ycA" class="cyc_term">ExpositoryArticle</a>). A positive example that is <i>not</i> a literary work is any instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwUwN3ZwpEbGdrcN5Y29ycA" class="cyc_term">MusicalComposition</a> that has lyrics that express propositions; another positive example is a mostly graphical advertisement that also includes text that expresses propositions. knowledge representation CW KnowledgeRepresentation-CW The collection of conceptual works consisting of formally represented knowledge. knowledge representation CW KnowledgeRepresentation-CW The collection of conceptual works consisting of formally represented knowledge. knowledge representation CW KnowledgeRepresentation-CW The collection of conceptual works consisting of formally represented knowledge. A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rdUzR9nSwEdaAAACgyZzFrg" class="cyc_term">ObjectTypeByStyle</a> and a collection of collections. Each instance of this collection is a collection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv5L5vZwpEbGdrcN5Y29ycA" class="cyc_term">PropositionalConceptualWork</a>s that are of the same style. Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv5L5vZwpEbGdrcN5Y29ycA" class="cyc_term">PropositionalConceptualWork</a>s share a style if they are of the same genre or some other salient feature, like form. For example, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4ryFwmzDF4QdiPSYzBttGHQw" class="cyc_term">Questionnaire_CW</a> is an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r7cbwlk1fQdmT9pzaDEAXLQ" class="cyc_term">PropositionalConceptualWorkTypeByStyle</a> because its instances share a form, namely that the instances ask questions, or are in what could be considered the 'interrogative style.' PropositionalConceptualWorkTypeByStyle work by style knowledge representation CW KnowledgeRepresentation-CW The collection of conceptual works consisting of formally represented knowledge.