]> 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. software flaw attribute SoftwareTypeByFlaw bug The collection of instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvwE_DpwpEbGdrcN5Y29ycA" class="cyc_term">ComputerProgramCopy</a> that possess some flaw from the perspective of either the software's designer(s) or user(s). The notion of "flaw" in this context, as in others, is highly subjective. See also <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjK55wpEbGdrcN5Y29ycA" class="cyc_term">DebuggingAComputerProgram</a>. Bug-Software The collection of instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvwE_DpwpEbGdrcN5Y29ycA" class="cyc_term">ComputerProgramCopy</a> that possess the millennium bug. The millennium bug is the much hyped software-bug which many people thought would cause computer systems running old (mainly <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjH05wpEbGdrcN5Y29ycA" class="cyc_term">Cobol</a>) <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJxiRJwpEbGdrcN5Y29ycA" class="cyc_term">ComputerProgram_CW</a>s to fail once internal computer clocks rolled over into the new millenium at midnight, December 31st 1999. Also known as the Year-2000 (or Y2K) problem. The bug arises from an early programming need to conserve memory resources by allocating only two characters to the year components of date strings (e.g., '76'), meaning that such systems will perceive the year AD 2000 to be the year AD 00. MillenniumBug Y2K bug software flaw attribute SoftwareTypeByFlaw software flaw attribute SoftwareTypeByFlaw flaw attribute by kind The collection of flaw types used to specify a particular kind of flaw that something has. These can be specified relative to roles or agent perspectives. IndividualTypeByFlaw AtemporalNecessarilyEssentialCollectionType A collection of collections. Each instance <code>COL</code> of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rqEYnNVMqEdaSKAACs0x8nw" class="cyc_term">AtemporalNecessarilyEssentialCollectionType</a> (ANECT) is a collection satisfying three conditions: (1) <code>COL</code> is disjoint with (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViA45wpEbGdrcN5Y29ycA" class="cyc_term">disjointWith</a>) <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAxJwpEbGdrcN5Y29ycA" class="cyc_term">TemporalThing</a>, (2) every instance <code>INST</code> of <code>COL</code> is an instance of <code>COL</code> essentially (i.e. <code>INST</code> is an instance of <code>COL</code>, and could not exist without being an instance of <code>COL</code>), and (3) condition (2) is a necessary truth about <code>COL</code>. Positive examples of ANECTs include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAzJwpEbGdrcN5Y29ycA" class="cyc_term">Collection</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVieEpwpEbGdrcN5Y29ycA" class="cyc_term">Integer</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAzZwpEbGdrcN5Y29ycA" class="cyc_term">Relation</a> (each of which is a collection of atemporals and is such that, necessarily, all of its instances are in it essentially). Negative examples include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjpUZwpEbGdrcN5Y29ycA" class="cyc_term">SpatialThing</a> (though arguably it is necessary that all of its instances are essentially instances of it, it is not disjoint with <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAxJwpEbGdrcN5Y29ycA" class="cyc_term">TemporalThing</a>) and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwP4FM5wpEbGdrcN5Y29ycA" class="cyc_term">UniqueAnatomicalPartType</a> (which, though disjoint with <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAxJwpEbGdrcN5Y29ycA" class="cyc_term">TemporalThing</a>, has instances, such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjvDpwpEbGdrcN5Y29ycA" class="cyc_term">Heart</a>, that could exist even if they weren't instances of it; e.g. it might have been the case that every creature with a heart had at least two hearts). There are no known examples of Cyc-reified collections satisfying conditions (1) and (2) but not (3), but one can be contrived. Suppose that all of today's winning lottery numbers were primes. Now consider the collection: (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvrhK-JwpEbGdrcN5Y29ycA" class="cyc_term">CollectionUnionFn</a> (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjkdpwpEbGdrcN5Y29ycA" class="cyc_term">TheSet</a> <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjrdZwpEbGdrcN5Y29ycA" class="cyc_term">PrimeNumber</a> TodaysWinningLotteryNumbers)) This collection is clearly disjoint with <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAxJwpEbGdrcN5Y29ycA" class="cyc_term">TemporalThing</a> and, by hypothesis, all of its instances are in it essentially (as each prime number is essentially a prime number). But this last fact is not necessarily true of this collection: the collection might have had instances that belonged to it only contingently (i.e. not essentially), as it might have been the case that one of today's winning lottery numbers was non-prime, and no number is such that it is essentially one of today's winning lottery numbers. When asserting that something is an instance or specialization of a given instance of ANECT, it is appropriate to do so in the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r3_SgQU2iEdaCwAACs0x8nw" class="cyc_term">UniversalVocabularyMt</a> (q.v.). Indeed, ANECT was specially defined to facilitate the movement of appropriate assertions to that microtheory. Cf. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rGeylLJTfEdqAAAACs0uFOQ" class="cyc_term">PragmaticallyDecontextualizedCollection</a>. type of atemporal collection in which membership is necessarily essential A collection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvtppU5wpEbGdrcN5Y29ycA" class="cyc_term">CollectionType</a>s. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvprlOZwpEbGdrcN5Y29ycA" class="cyc_term">FacetingCollectionType</a> is a collection-type that "facets" -- i.e. stands in the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvjldVJwpEbGdrcN5Y29ycA" class="cyc_term">facets_Generic</a> (q.v.) relation to -- another collection. Examples include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVibOJwpEbGdrcN5Y29ycA" class="cyc_term">AutomobileTypeByBrand</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rANFO8Ec-EdaEKABQ2sS97g" class="cyc_term">MusicTypeByGenre</a>, which facet <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViVwZwpEbGdrcN5Y29ycA" class="cyc_term">Automobile</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjOJpwpEbGdrcN5Y29ycA" class="cyc_term">Music</a>, respectively. faceting collection type FacetingCollectionType