简介：Inthispaper,themethodsbasedonlikelihoodratioareproposedfeeuncertaintyreasoning.Theelementaryconceptsandformulasarederivedsysttmatically,especiellyforthesituationswithdependentinformationandforthedifferenrordersofinformalion.

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简介：ThepropertyofNPcompletenessoftopologicspatialreasoningproblemhasbeenproved.Accordingtothesimilarityofuncertaintywithtopologicspatialreasoning,theproblemofdirectionalspatialreasoningshouldbealsoanNPcompleteproblem.TheproofforthepropertyofNPcompletenessindirectionalspatialreasoningproblemisbasedontwoimportanttransformations.Afterthesetransformations,aspatialconfigurationhasbeenconstructedbasedondirectionalconstraints,andthepropertyofNPcompletenessindirectionalspatialreasoninghasbeenprovedwiththehelpoftheconsistencyoftheconstraintsintheconfiguration.

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简介：AsanimportantvariantofReiter'sdefaultlogic.Poole(1988)developedanonmonotonicreasoningframeworkintheclassicalfirst-orderlanguage,BrewkaandNebelextendedPoole'sapproachinordertoenablearepresentationofprioritiesbetweendefaults.Inthispaperageneralframeworkfordefaultreasoningispresented,whichcanbeviewedasageneralizationofthethreeapproachesabove.Itisprovedthatthesyntax-independentdefaultreasoninginthisframeworkisidenticaltothegeneralbeliefrevisionoperationintroducedbyZhangetal.(1997).Thisesultprovidesasolutiontotheproblemwhetherthereisacorrespondencebetweenbeliefrevisionanddefaultlogicfortheinfinitecase.Asaby-product,ananswertothethequestion,raisedbyMankinsonandGaerdenfors(1991),isalsogivenaboutwhetherthereisacounterpartcontracitoninnonmonotoniclogic.

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简介：基于盒子的推理是以前的答案在被存储为未来使用的一种AI技术。人们习惯于根据在他们的记忆被存储并且以前被他们使用了的那些线路指导自己。只基于人到熟悉的线路的偏爱，它通过认知活动的学习被获得。我们建议基于推理到路径计划的盒子使用聪明的方法。一个盒子底存储所有答案到所有最短的路径是不可能的；因此，他们的部分应该被存储。不管多么，线路哪个并且哪个应该被存储不应该是？我们怎么并且怎么改编已经被存储了的盒子我们基于他们获得最短的线路？所有这些问题需要被由于基于盒子的推理技术，集成网络的知识解释。这篇论文建议在另一个点的基于盒子的推理。根据问题空间的总分析发现一些不能替代的连接的这个工具，它被称为must_be_passed在来源和目的地之间连接。仅仅从格子的那些最好的出口/入口节点计算最短的路径盒子到不能替代的连接，然后增加他们进存储为未来使用的盒子底。这个方法基于基于盒子的推理技术并且完全考虑问题空间的性质。除了在线路网络的自然格子的知识的使用，这个方法是比计算效率上的存在算法更有效的。

简介：Inmanyapplicationsanddomains,temporalconstraintsbetweenactions,andtheirprobabilitiesplayanimportantrole.Weproposethefirstapproachintheliteraturecopingwithprobabilisticquantitativeconstraints.Toachievesuchachallenginggoal,weextendthewidelyusedsimpletemporalproblem(STP)frameworktoconsiderprobabilities.Specifically,weproposei)aformalrepresentationofprobabilisticquantitativeconstraints,ii)analgorithm,basedontheoperationsofintersectionandcomposition,forthepropagationofsuchtemporalconstraints,andiii)facilitiestosupportqueryansweringonasetofsuchconstraints.Asaresult,weprovideuserswiththefirsthomogeneousmethodsupportingthetreatment(representing,reasoning,andquerying)ofprobabilisticquantitativeconstraints,asrequiredbymanyapplicationsanddomains.

简介：Tousereasoningknowledgeaccuratelyandefficiently,manyreasoningmethodshavebeenproposed.However,thedifferencesinformamongthemethodsmayobstructthesystematicalanalysisandharmoniousintegrationofthem.Inthispaper,acommonreasoningmodelJUM(JudgementModel)isintroduced.AccordingtoJUM,acommonknowledgerepresentationformisabstractedfromdifferentreasoningmethodsanditslimitationisreduced.WealsoproposeanalgorithmfortransformingonetypeofJUMsintoanother.Insomecases,thealgorithmcanbeusedtoresolvethekeyproblemofintegratingdifferenttypesofJUMinonesystem.Itispossiblethatanewarchitectureofknowledge-basedsystemcanberealizedunderJUM.

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简介：AfteranalyzingtheweldingprocedureknowledgeinChinesenationalstandardsforweldingprocedurequalificationofsteelpressurevesselfromthepointofestablishingexpertsystem,itcanbedividedintofivetypesofknowledge,i.e.practice,definition,regularity,processanddescriptionknowledge.Theknowledgeexpressionmethodsareestablishedaccordingtothedifferenttypeofweldingprocedureknowledge.Thereasoningprocessbasedonruleisadopted.Andthereasoningengineisembeddedamongobjectsintegratedwiththeknowledgebase.

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简介：Themediumaccesscontrol(MAC)protocolforindoorvisiblelightcommunication(VLC)withenergyharvestingisexploredinthispaper.Theunfairnessofthroughputexistsamongdevicesduetothesignificantdifferenceoftheirenergyharvestingrateswhichchangeswithdistance,acceptanceangleandtheobstructionprobability.Weproposeanenergyharvestingmodel,anewobstructionprobabilitymodelandanenergyadaptivecontentionalgorithmtoovercometheunfairnessproblem.Thisdevicecanadjustitscontentionwindowaccordingtotheenergyharvestingrate.Asaresult,thedevicewithlowerenergyharvestingratecangetshortercontentionwindowtoimproveitstransmissionopportunity.SimulationresultsshowthatourMACprotocolcanachieveahigherdegreeoffairness.

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简介：Asworldconsumptionofenergygrowsfast,theprovenpetroleumreservesarelimitedintoday'sworld,andtheoilpricefluctuatesandmostoftensoarsupsharply,energyhasbecomeamostcrucialfactorintheworldeconomyandtheenergysecurity