]> 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. Frequency frequency A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjrwpwpEbGdrcN5Y29ycA" class="cyc_term">Rate</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> is the number of times something happens during some time interval. Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> may be either single values (see the collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViCW5wpEbGdrcN5Y29ycA" class="cyc_term">ScalarPointValue</a>), such as 103 kiloHertz, or a range of values, such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViryZwpEbGdrcN5Y29ycA" class="cyc_term">Rarely</a>. Note that instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> are important in the characterization of types of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQCA9ZwpEbGdrcN5Y29ycA" class="cyc_term">WavePropagation</a>. frequencies http://en.wikipedia.org/wiki/Frequency sampling rate frequency SamplingRate-Frequency A sub-collection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a>. Each instance is a frequency of sampling per unit time. A collection of instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a>. The members of this collection broadly cover a wide range of frequencies from once a half century to continuously. fact factory classification frequency FactFactoryClassificationFrequency SamplingFrequency A sub-collection of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a>. Each instance is the frequency of sampling a continuously varying signal. sampling frequency regular RegularFrequency once a generation OnceAGeneration Used to qualify types of events that typically happen once roughly every thirty years. Every Per Fn week 1 (EveryPerFn CalendarWeek 1) Every Per Fn year 1 (EveryPerFn CalendarYear 1) (EveryPerFn CalendarHour 1) Every Per Fn calendar hour 1 (EveryPerFn CalendarQuarter 1) Every Per Fn calendar quarter 1 a high level of frequencies (HighAmountFn Frequency) quarterly Quarterly This refers to a frequency of 4 times a year - every 3 months. Hourly hourly Used to indicate that something happens regularly five times a day. FiveTimesDaily five times daily a medium to very high level of frequencies (MediumToVeryHighAmountFn Frequency) Every Per Fn month 1 (EveryPerFn CalendarMonth 1) almost never AlmostNever twice monthly TwiceMonthly Used to indicate that something happens regularly twice a month Rarely rarity twice daily TwiceDaily biweekly Once every two weeks. BiWeekly randomly RandomFrequency Used to indicate that something is occurring at every instant in time. ceaselessness Continuously OftenWhileAwake The frequency with which things such as walking occur often while awake <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv6q5P5wpEbGdrcN5Y29ycA" class="cyc_term">OnceEveryKBDump</a> is a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a>. Events that happen at this frequency happen once during every <font color="#ff0000">#$CycKBDump</font>. OnceEveryKBDump once every kb dump Never never Often frequently Often Sometimes-GenericFrequency sometimes The most general of all instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a>. Every frequency <font color="#ff0000">#$genlAttributes</font> up to this frequency, except <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rnrSziCCWEdaAAABQ2sS97g" class="cyc_term">Never</a>, which is its <font color="#ff0000">#$negationAttribute</font>. ThreeTimesDaily three times daily Used to indicate that something happens regularly three times a day. frequency Frequency A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjrwpwpEbGdrcN5Y29ycA" class="cyc_term">Rate</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> is the number of times something happens during some time interval. Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> may be either single values (see the collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViCW5wpEbGdrcN5Y29ycA" class="cyc_term">ScalarPointValue</a>), such as 103 kiloHertz, or a range of values, such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViryZwpEbGdrcN5Y29ycA" class="cyc_term">Rarely</a>. Note that instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> are important in the characterization of types of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQCA9ZwpEbGdrcN5Y29ycA" class="cyc_term">WavePropagation</a>. frequency Frequency A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjrwpwpEbGdrcN5Y29ycA" class="cyc_term">Rate</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> is the number of times something happens during some time interval. Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> may be either single values (see the collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViCW5wpEbGdrcN5Y29ycA" class="cyc_term">ScalarPointValue</a>), such as 103 kiloHertz, or a range of values, such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViryZwpEbGdrcN5Y29ycA" class="cyc_term">Rarely</a>. Note that instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> are important in the characterization of types of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQCA9ZwpEbGdrcN5Y29ycA" class="cyc_term">WavePropagation</a>. scalar intervals quantity topic ScalarIntervals-Quantity-Topic AtemporalNecessarilyEssentialCollectionType A collection of collections. Each instance <code><b>COL</b></code> of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rqEYnNVMqEdaSKAACs0x8nw" class="cyc_term">AtemporalNecessarilyEssentialCollectionType</a> (<i>ANECT</i>) is a collection satisfying three conditions: (1) <code><b>COL</b></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><b>INST</b></code> of <code><b>COL</b></code> is an instance of <code><b>COL</b></code> essentially (i.e. <code><b>INST</b></code> is an instance of <code><b>COL</b></code>, and could not exist without being an instance of <code><b>COL</b></code>), and (3) condition (2) is a necessary truth about <code><b>COL</b></code>. <p/> 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: <p/> (<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> <i>TodaysWinningLotteryNumbers</i>)) <p/> 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 <i>necessarily</i> 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. <p/> 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. <p/> 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 specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rhywBFkT6EdaAAACgye4oEQ" class="cyc_term">PhysicalQuantity</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rhFtvNGqnQdeLusO9k_GjYA" class="cyc_term">RatioQuantity</a> (qq.v.). Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjrwpwpEbGdrcN5Y29ycA" class="cyc_term">Rate</a> is a multi-dimensional quantity made up of some quantity (e.g. distance traveled or money spent), taken with respect to -- i.e. divided by (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAq5wpEbGdrcN5Y29ycA" class="cyc_term">QuotientFn</a>) -- a quantity of time (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViApZwpEbGdrcN5Y29ycA" class="cyc_term">Time_Quantity</a>). <p/> Specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjrwpwpEbGdrcN5Y29ycA" class="cyc_term">Rate</a> include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViRs5wpEbGdrcN5Y29ycA" class="cyc_term">Speed</a> (e.g. 55 mph), <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> (e.g. 55 kHz), and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjrf5wpEbGdrcN5Y29ycA" class="cyc_term">MonetaryRate</a> (e.g. 55 cents per minute). <p/> See also <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViQrJwpEbGdrcN5Y29ycA" class="cyc_term">UnitOfRate</a>, the collection of functions used to measure rates (e.g. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVivk5wpEbGdrcN5Y29ycA" class="cyc_term">DollarsPerYear</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkBiZwpEbGdrcN5Y29ycA" class="cyc_term">MetersPerSecond</a>). rate Rate frequency Frequency A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjrwpwpEbGdrcN5Y29ycA" class="cyc_term">Rate</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> is the number of times something happens during some time interval. Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> may be either single values (see the collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViCW5wpEbGdrcN5Y29ycA" class="cyc_term">ScalarPointValue</a>), such as 103 kiloHertz, or a range of values, such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViryZwpEbGdrcN5Y29ycA" class="cyc_term">Rarely</a>. Note that instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> are important in the characterization of types of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQCA9ZwpEbGdrcN5Y29ycA" class="cyc_term">WavePropagation</a>. measurement of wave phenomena wave topic MeasurementOfWavePhenomena-Wave-Topic 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 TwoDimensionalQuantity A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rU9w69qCIQdiaX7o2wbs-og" class="cyc_term">MultiDimensionalQuantity</a> (q.v.). Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rVQ8MvqCIQdicLoOa1pZefg" class="cyc_term">TwoDimensionalQuantity</a> is a quantity that is derivable as the product or ratio (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViArJwpEbGdrcN5Y29ycA" class="cyc_term">TimesFn</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAq5wpEbGdrcN5Y29ycA" class="cyc_term">QuotientFn</a>) of two <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rUstvYKCIQdiBWaekaRIs-w" class="cyc_term">OneDimensionalQuantity</a>(ies) (q.v.). For example, (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkDkZwpEbGdrcN5Y29ycA" class="cyc_term">MilesPerHour</a> 65) is a two-dimensional quantity obtainable by dividing (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi3VJwpEbGdrcN5Y29ycA" class="cyc_term">Mile</a> 65) by (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjrNJwpEbGdrcN5Y29ycA" class="cyc_term">HoursDuration</a> 1), and (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj-EJwpEbGdrcN5Y29ycA" class="cyc_term">SquareMeter</a> 4) is a two-dimensional quantity obtainable by multiplying (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjRp5wpEbGdrcN5Y29ycA" class="cyc_term">Meter</a> 2) by itself. In contrast, (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi3VJwpEbGdrcN5Y29ycA" class="cyc_term">Mile</a> 65), (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjrNJwpEbGdrcN5Y29ycA" class="cyc_term">HoursDuration</a> 1), and (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjRp5wpEbGdrcN5Y29ycA" class="cyc_term">Meter</a> 2) are all instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rUstvYKCIQdiBWaekaRIs-w" class="cyc_term">OneDimensionalQuantity</a>; and (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViQA5wpEbGdrcN5Y29ycA" class="cyc_term">CubicMeter</a> 8) is a <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r-7GRzKCIQdiHEaxh2Wf1-g" class="cyc_term">ThreeDimensionalQuantity</a> (q.v.). <p/> Each two-dimensional quantity is in principle equal to the result of applying some (reified or otherwise) <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rRYQwtp_BQdiXvs0O06kraA" class="cyc_term">TwoDimensionalUnitOfMeasure</a> (q.v.) to some <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rnVZQSiCmEdaAAACgyZzFrg" class="cyc_term">NumericInterval</a> (or pair of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rnVZQSiCmEdaAAACgyZzFrg" class="cyc_term">NumericInterval</a>s). <p/> Specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rVQ8MvqCIQdicLoOa1pZefg" class="cyc_term">TwoDimensionalQuantity</a> include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjDAZwpEbGdrcN5Y29ycA" class="cyc_term">Area</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViRs5wpEbGdrcN5Y29ycA" class="cyc_term">Speed</a>. two dimensional quantity frequency Frequency A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjrwpwpEbGdrcN5Y29ycA" class="cyc_term">Rate</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> is the number of times something happens during some time interval. Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> may be either single values (see the collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViCW5wpEbGdrcN5Y29ycA" class="cyc_term">ScalarPointValue</a>), such as 103 kiloHertz, or a range of values, such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViryZwpEbGdrcN5Y29ycA" class="cyc_term">Rarely</a>. Note that instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> are important in the characterization of types of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQCA9ZwpEbGdrcN5Y29ycA" class="cyc_term">WavePropagation</a>. type of derived numeric scalar interval DerivedMeasurableQuantityType A collection of collections and a specialization of both <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjZs5wpEbGdrcN5Y29ycA" class="cyc_term">MeasurableScalarIntervalType</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwF4t15wpEbGdrcN5Y29ycA" class="cyc_term">TotallyOrderedQuantityType</a> (qq.v.). Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVja4JwpEbGdrcN5Y29ycA" class="cyc_term">DerivedMeasurableQuantityType</a> is a totally-ordered collection of instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rU9w69qCIQdiaX7o2wbs-og" class="cyc_term">MultiDimensionalQuantity</a>: measurable quantities that are derived from some more basic quantities (via e.g. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwHa2CZwpEbGdrcN5Y29ycA" class="cyc_term">ProductFn</a> or <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAq5wpEbGdrcN5Y29ycA" class="cyc_term">QuotientFn</a>). Examples include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVju5JwpEbGdrcN5Y29ycA" class="cyc_term">Volume</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjDAZwpEbGdrcN5Y29ycA" class="cyc_term">Area</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjciZwpEbGdrcN5Y29ycA" class="cyc_term">Acceleration</a>. <p/> Cf. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkFnZwpEbGdrcN5Y29ycA" class="cyc_term">PrimitiveMeasurableQuantityType</a>. The collection of all instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r_4bScKNtQdiVw7XtX-HN0Q" class="cyc_term">ClarifyingCollectionType</a> that are used by the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvYbXiJwpEbGdrcN5Y29ycA" class="cyc_term">QueryAugmentationApplication</a> to resolve natural language ambiguities. QAClarifyingCollectionType QA clarifying collection type A <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4ret7qgOKgEdmAAAACs6hfSg" class="cyc_term">ConceptTypeByDomain</a> (q.v.). Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rC-8cJgBpEdqAAAACs0uFOQ" class="cyc_term">UnitOfMeasureConcept</a> are collections and relations having to do with unit of measurement functions and the kinds of quantities they return as values. Important specializations and instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAqpwpEbGdrcN5Y29ycA" class="cyc_term">UnitOfMeasure</a>, major specializations or <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViAp5wpEbGdrcN5Y29ycA" class="cyc_term">ScalarInterval</a>, and relations that are important to measurement theory are instances of this collection. UnitOfMeasureConcept unit of measure concept frequency Frequency A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjrwpwpEbGdrcN5Y29ycA" class="cyc_term">Rate</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> is the number of times something happens during some time interval. Instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> may be either single values (see the collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViCW5wpEbGdrcN5Y29ycA" class="cyc_term">ScalarPointValue</a>), such as 103 kiloHertz, or a range of values, such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViryZwpEbGdrcN5Y29ycA" class="cyc_term">Rarely</a>. Note that instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj61JwpEbGdrcN5Y29ycA" class="cyc_term">Frequency</a> are important in the characterization of types of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQCA9ZwpEbGdrcN5Y29ycA" class="cyc_term">WavePropagation</a>.