]> 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. A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvf9sZJwpEbGdrcN5Y29ycA" class="cyc_term">AspatialInformationStore</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwNgIyZwpEbGdrcN5Y29ycA" class="cyc_term">ClassificationSystem</a> is an agreed-upon or conventional classification system consisting of several <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvubaMZwpEbGdrcN5Y29ycA" class="cyc_term">ConventionalClassificationType</a>s (q.v.). In such a system, a change or reclassification is possible by a decision of an authority, or by a changed social agreement, without changing the intrinsic natures of the actual objects in the classificatory categories. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwNgIyZwpEbGdrcN5Y29ycA" class="cyc_term">ClassificationSystem</a>s include biological taxonomies, standard classifications, data dictionaries, thesauri, cultural taboo systems, military doctrinal systems, and calendar systems. ClassificationSystem conventional classification system conventional classification systems http://en.wikipedia.org/wiki/Taxonomy calendar A linguistic system for identifying days by means of unique dates. CalendarSystem The collection of all taxonomic systems. A taxonomy minimally includes a description of a domain along class/subclass lines (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4raaaKviVQEdqAAAACs71DGQ" class="cyc_term">ClassSubclassHierarchy</a>), but can also include other binary relations (e.g., partonomic relations) in its description. A taxonomy can be usefully contrasted with an ontology (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv7D_EBSHQdiLMuoH7dC2KQ" class="cyc_term">Ontology</a>), the latter of which includes a rich description of a domain, often including non-binary relations and complex rules. taxonomy Taxonomy thesaurus information This unit will become fleshed out once theories of information get flushed out. Note that a whole book's worth of thesaurus info is an instance of ThesarausInformation just as is a pair of synonyms. ThesaurusInformation The collection of organized conceptual structures in which types of things form a generalization hierarchy and in which properties are defined to hold between instances of the types of things. An example is the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAZZwpEbGdrcN5Y29ycA" class="cyc_term">Cyc</a> ontology. ontology Ontology DAQ Vocabulary System DAQVocabularySystem 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 not 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. ObjectType The collection of all collections that are "object-like" in at least one respect. A collection <code>COL</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>COL</code> is not itself an instance of <code>COL</code>; when this happens <code>COL</code> is said to be object-like with respect to that sense of 'part'. More precisely, for a collection <code>COL</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>PARTPRED</code> of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwgfukKs8QdePzLB9nLNpTw" class="cyc_term">properParts</a> such that, for any <code>OBJ1</code> and <code>OBJ2</code>, if <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> OBJ1 COL)</code> and <code>(PARTPRED OBJ1 OBJ2)</code> both hold, then <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> OBJ2 COL)</code> does not hold. (Also sufficient for <code>COL</code>'s being an object-type is that there be some specialization <code>INVPARTPRED</code> of the inverse 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>(INVPARTPRED OBJ2 OBJ1)</code>, with everything else remaining the same as above.) Note that neither of the above sufficient conditions for <code>COL</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 nearly all cases, <code>COL</code> should be considered an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a>. 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 not 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>. 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 A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvf9sZJwpEbGdrcN5Y29ycA" class="cyc_term">AspatialInformationStore</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwNgIyZwpEbGdrcN5Y29ycA" class="cyc_term">ClassificationSystem</a> is an agreed-upon or conventional classification system consisting of several <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvubaMZwpEbGdrcN5Y29ycA" class="cyc_term">ConventionalClassificationType</a>s (q.v.). In such a system, a change or reclassification is possible by a decision of an authority, or by a changed social agreement, without changing the intrinsic natures of the actual objects in the classificatory categories. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwNgIyZwpEbGdrcN5Y29ycA" class="cyc_term">ClassificationSystem</a>s include biological taxonomies, standard classifications, data dictionaries, thesauri, cultural taboo systems, military doctrinal systems, and calendar systems. ClassificationSystem conventional classification system A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvf9sZJwpEbGdrcN5Y29ycA" class="cyc_term">AspatialInformationStore</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwNgIyZwpEbGdrcN5Y29ycA" class="cyc_term">ClassificationSystem</a> is an agreed-upon or conventional classification system consisting of several <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvubaMZwpEbGdrcN5Y29ycA" class="cyc_term">ConventionalClassificationType</a>s (q.v.). In such a system, a change or reclassification is possible by a decision of an authority, or by a changed social agreement, without changing the intrinsic natures of the actual objects in the classificatory categories. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwNgIyZwpEbGdrcN5Y29ycA" class="cyc_term">ClassificationSystem</a>s include biological taxonomies, standard classifications, data dictionaries, thesauri, cultural taboo systems, military doctrinal systems, and calendar systems. ClassificationSystem conventional classification system InformationAndCWs-Topic information and CWs topic A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvf9sZJwpEbGdrcN5Y29ycA" class="cyc_term">AspatialInformationStore</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwNgIyZwpEbGdrcN5Y29ycA" class="cyc_term">ClassificationSystem</a> is an agreed-upon or conventional classification system consisting of several <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvubaMZwpEbGdrcN5Y29ycA" class="cyc_term">ConventionalClassificationType</a>s (q.v.). In such a system, a change or reclassification is possible by a decision of an authority, or by a changed social agreement, without changing the intrinsic natures of the actual objects in the classificatory categories. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwNgIyZwpEbGdrcN5Y29ycA" class="cyc_term">ClassificationSystem</a>s include biological taxonomies, standard classifications, data dictionaries, thesauri, cultural taboo systems, military doctrinal systems, and calendar systems. ClassificationSystem conventional classification system A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvf9sZJwpEbGdrcN5Y29ycA" class="cyc_term">AspatialInformationStore</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwNgIyZwpEbGdrcN5Y29ycA" class="cyc_term">ClassificationSystem</a> is an agreed-upon or conventional classification system consisting of several <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvubaMZwpEbGdrcN5Y29ycA" class="cyc_term">ConventionalClassificationType</a>s (q.v.). In such a system, a change or reclassification is possible by a decision of an authority, or by a changed social agreement, without changing the intrinsic natures of the actual objects in the classificatory categories. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwNgIyZwpEbGdrcN5Y29ycA" class="cyc_term">ClassificationSystem</a>s include biological taxonomies, standard classifications, data dictionaries, thesauri, cultural taboo systems, military doctrinal systems, and calendar systems. ClassificationSystem conventional classification system Semi-DirectedPathSystem semi-directed path system An instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvvv7n5wpEbGdrcN5Y29ycA" class="cyc_term">PathSystemType_Structural</a> and a subcollection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv9YtpJwpEbGdrcN5Y29ycA" class="cyc_term">PathSystem</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvr4OzJwpEbGdrcN5Y29ycA" class="cyc_term">Semi_DirectedPathSystem</a> is a path system SYS in which every link LINK is given at least one direction (specified by (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvZiSAJwpEbGdrcN5Y29ycA" class="cyc_term">linkFromToInSystem</a> LINK X Y SYS)), and in which every loop is given two directions (so in a sense we can ignore the directions of loops). The directions of paths and non-loop-cycles (if there are any) in SYS are determined by the directions of links in SYS. When designing a particular semi-directed path system, it is convenient to create a constant for the system (say SYS1) and to assert that it is an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvr4OzJwpEbGdrcN5Y29ycA" class="cyc_term">Semi_DirectedPathSystem</a> (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> SYS1 <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvr4OzJwpEbGdrcN5Y29ycA" class="cyc_term">Semi_DirectedPathSystem</a>)). One can then create a constant for each node (such as Node1) in the system, and a constant for each link (such as LinkA) in the system (using (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> LinkA <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViOaZwpEbGdrcN5Y29ycA" class="cyc_term">Path_Simple</a>)), and then assert the directions of links using <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvZiSAJwpEbGdrcN5Y29ycA" class="cyc_term">linkFromToInSystem</a> (e.g., (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvZiSAJwpEbGdrcN5Y29ycA" class="cyc_term">linkFromToInSystem</a> LinkA Node1 Node2 SYS1)). The axioms for <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvZiSAJwpEbGdrcN5Y29ycA" class="cyc_term">linkFromToInSystem</a> will allow one to infer other assertions, such as those involving <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwECJl5wpEbGdrcN5Y29ycA" class="cyc_term">pointOnPath</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvgei-JwpEbGdrcN5Y29ycA" class="cyc_term">linkBetweenInSystem</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv71RIpwpEbGdrcN5Y29ycA" class="cyc_term">nodeInSystem</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv-lGrJwpEbGdrcN5Y29ycA" class="cyc_term">linkInSystem</a>. One can then proceed creating loops, isolated points, and extra points on links, if they are desired. Pretty String (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLSVCpwpEbGdrcN5Y29ycA" class="cyc_term">prettyString</a> TERM STRING) means that STRING is the English word or expression (sequence of words) commonly used to refer to TERM. The predicate <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLSVCpwpEbGdrcN5Y29ycA" class="cyc_term">prettyString</a> is used by the code which generates CycL to English paraphrases, but its applicability is not restricted to this use. prettyString