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46 个结果
  • 简介:Thispaperproposesanactionanalysisforimplementingcombingpartialevaluationefficiently.Byanalyzingtheresultsofbindingtimeanalysis.Operations,whichshouldbeusedinthecombiningpartialevaluation.aredeterminedinadvance,sothatthecomputationinthecombinationofspecializedprogramsisreducedeffectively.

  • 标签: 程序设计 程序优化技术 组合部分估计
  • 简介:Creditriskpredictionmodelsseektopredictqualityfactorssuchaswhetheranindividualwilldefault(badapplicant)onaloanornot(goodapplicant).Thiscanbetreatedasakindofmachinelearning(ML)problem.Recently,theuseofMLalgorithmshasproventobeofgreatpracticalvalueinsolvingavarietyofriskproblemsincludingcreditriskprediction.OneofthemostactiveareasofrecentresearchinMLhasbeentheuseofensemble(combining)classifiers.Researchindicatesthatensembleindividualclassifiersleadtoasignificantimprovementinclassificationperformancebyhavingthemvoteforthemostpopularclass.Thispaperexploresthepredictedbehaviouroffiveclassifiersfordifferenttypesofnoiseintermsofcreditriskpredictionaccuracy,andhowcouldsuchaccuracybeimprovedbyusingpairsofclassifierensembles.Benchmarkingresultsonfivecreditdatasetsandcomparisonwiththeperformanceofeachindividualclassifieronpredictiveaccuracyatvariousattributenoiselevelsarepresented.Theexperimentalevaluationshowsthattheensembleofclassifierstechniquehasthepotentialtoimprovepredictionaccuracy.

  • 标签: 多分类器 风险预测 信用 信贷风险 性能比较 噪声水平
  • 简介:Anovelparadigmforfractalcodingselectivelycorrectsthefractalcodeforselecteddomainblockswithanimage-adaptiveVQcodebook.Thecodebookisgeneratedfromtheinitialuncorrectedfractalcodeandis,therefore,availableatthedecoder.Anefficienttrade-offisgeneratedbetweenincrementalperformanceandbitrate.

  • 标签: 分形图像编码 矢量量子化 交互函数
  • 简介:Atechnologyforcombiningdigitalwatermarkswithtwo-colorbitmapimageonthethresholdwatermarkingmethodispresented.Ourtechnologydoesn'taddanythingtothedigitalmedia,butcombinesthewatermarksintwo-colorbitmapimagebylookingforsomecharacteristicvaluesinthebitmapandusestherelationshipbetweenthewatermarksandthecharacteristicvaluestoprovethecopyrightprotection.Thechoiceofthecharacteristicvaluesdependsonthechoiceofacryptographickeyknownbytheownerofthebitmap.Thebenefitofusingacryptographickeyistocomginethewatermarkswiththebitmapinahighsecureway.

  • 标签: 数字水印 信息隐匿 版权保护 二色位图 图像
  • 简介:包括的联合计划概括了选择联合的二种选择(GSC)和联合的概括顺序选择(GOSC)被调查。在GSC计划,从R差异分支的一个总数的L最强壮的差异分支被最大的比率联合选择并且协调地联合了。GOSC意味着从R差异分支的Lth最强壮的差异分支为接收被选择。为有GSC和GOSC的最大的比率传播的平均signal-to-noise比率的靠近形式的表情在使隧道褪色的瑞利被导出。

  • 标签: 传输率 信噪比 平均 瑞利衰落信道 广义结合 最大比合并
  • 简介:Thephaseandfrequencylockingofmicrowave,millimeterwavepowercombiningwereanalysedandsummarizedinanall-roundway.Themaster/slavephaselockingofcavityoscillators,thepeerphaselockingofmutuallycoupledoscillators,andthepeerphaselockingofring-connectedmultipleoscillatorswereinvestigated.Theresultsofnumericalcalculations,andtherelationsofphasetophaselockingmodelandoscillatorparametersweregiven.Andthecavityandspacepowercombiningaspectsformicrowaveandmillimeterwavewerepresented.

  • 标签: Power combining PHASE LOCKING Frequency LOCKING
  • 简介:Theobjectiveofthisworkistoprovidedecision-makingprocesseswithanupdated/realpictureofthemobileresourcesinindustrialenvironmentsthroughaconstantfeedbackofinformation.Thecombinationofidentificationtechnologiesandwirelesssensornetworks(WSN)isproposedasakeydevelopmenttoguaranteeanaccurateandtimelysupplyofonlineinformationregardingthelocalizationandtrackingofthemobilewirelessdevices.Thisapproachusesacooperativeanddistributedlocalizationsystem,calledZigID,whichisaWSNbasedonaZigbeenetworkwithradiofrequencyidentification(RFID)activetagsasendnodes.TheWSNcanrecovernotonlytheIDinformationstoredatthetagsattachedtomobileresources,butalsoanyotherusefuldatacapturedbyspecificsensorsforacceleration,temperature,humidityandfuelstatus.ThispaperalsoshowsthedevelopmentofZigID,includingdevicesandinformationflows,aswellasitsimplementationingroundhandlingoperationsattheCiudadRealCentralAirport,Spain.

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  • 简介:Onlyinthepresenceofsidelobejamming(SLJ),cantheconventionaladaptivemonopulsetechniquenullthejammingeffectivelyandmaintainthemonopulseangleestimationaccuracysimultaneously.Whilemainlobejamming(MLJ)exists,themainlobeofadaptivepatternwillsubjecttoseriousdistortion,whichresultsinafailureofdetectingandtrackingtargetsbymonopulsetechnique.Therefore,amonopulseangleestimationalgorithmbasedoncombiningsum-differencebeamandauxiliarybeamispresented.Thisalgorithmutilizesbothhighgaindifferencebeamsandhighgainauxiliarybeamsforcancellingthemainlobejammerandmultiplesidelobejammers(SLJs)whilekeepinganadaptivemonopulseratio.TheoreticalanalysisandsimulationresultsindicatethattheseriousinvalidationofmonopulsetechniqueinMLJandSLJsscenariosisresolvedwell,whichimprovesthemonopulseangleaccuracygreatly.Furthermore,theproposedalgorithmisofsimpleimplementationandlowcomputationalcomplexity.

  • 标签: 自适应模式 脉冲干扰 光束 单脉冲技术 主瓣干扰 估计算法
  • 简介:Smartgrowthpoliciesadvocateforeconomicallyviable,environmentallyconscientious,andsociallyequitablesolutionsforurbandevelopment.Thesepoliciesweredevelopedlargelyinresponsetoissuesrootedintheautomobile-orientedculture:airpollution,highgreenhousegasemissions,trafficcongestion,andsedentarylifestyles.Inurbansettings,agoodtransportationalternativeiscycling,sinceitisabletoservethetravelneedsofnearlyhalfofcitydwellers’dailytrips.ManyEuropeanandCanadiancitieshavesuccessfullyincreasedcyclingratesbycreatingsaferbicycleenvironmentsandrestrictingordiscouragingautomobileuse.ToevaluatethepotentialeffectsoftheabovemeasuresonAmericanurbanareas,thispaperexaminescasestudiesofcycletracksandbicycleboulevardsimplementedinAmericancities,andhowthesefacilityimprovementshavechangedhowsafecyclistsfeelontheroadandoverallbicycleusage.Resultsshowthetwomethodsareindeedeffectiveinincreasingbicycleusagerates.Ultimately,increasingcyclingratesneedspoliciestodiscouragepeoplefromdriving,thegreatestmodeshareinnearlyallurbanareas.Parkingpolicyhasmajorimpactsonpeople’sdecisiontousetheautomobile.Currently,parkingisoversuppliedandunderpricedinmanycities,makingitirresistibleforpeopletodrive.Decreasingthenumberofparkingspacesavailableandincreasingtheirpricewillincreasepressureondriverstodriveless,especiallyforshorttrips,andtobikeinstead.Itisimportantforplannersandpolicymakerstorealizethatsolutionsfrombothdirections,makingbikingmoreenjoyableandmakingparking,andhencedriving,lessaffordable,shouldbeusedintandem.Thecomplementarynatureofthetwoapproachesmakesitsotheeffectofthecombinationisgreaterthanthesumofthetwo.

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  • 简介:Melanomaisthedeadliestformofskincancerandhasanincidencethatisrisingfasterthananyothersolidtumor.Metastaticmelanomatreatmenthasconsiderablyprogressedinthepastfiveyearswiththeintroductionoftargetedtherapy(BRAFandMEKinhibitors)andimmunecheckpointblockade(anti-CTLA4,anti-PD-1,andanti-PD-L1).However,eachtreatmentmodalityhaslimitations.Treatmentwithtargetedtherapyhasbeenassociatedwithahighresponserate,butwithshort-termresponses.Conversely,treatmentwithimmunecheckpointblockadehasalowerresponserate,butwithlongtermresponses.Targetedtherapyaffectsantitumorimmunity,andsynergymayexistwhentargetedtherapyiscombinedwithimmunotherapy.Thisarticlepresentsabriefreviewoftherationaleandevidenceforthepotentialsynergybetweentargetedtherapyandimmunecheckpointblockade.Challengesanddirectionsforfuturestudiesarealsoproposed.

  • 标签: 免疫抑制剂 靶向治疗 检查点 转移性 黑色素瘤 协同作用
  • 简介:Inthispaper,weprovideanecessaryinfrastructuretodefineanabstractstateexplorationintheHOLtheoremprover.OurinfrastructureisbasedonadeepembeddingoftheMultiwayDecisionGraphs(MDGs)theoryinHOL.MDGsgeneralizeReducedOrderedBinaryDecisionDiagrams(ROBDDs)torepresentandmanipulateasubsetoffirst-orderlogicformulae.TheMDGsembeddingisbasedonthelogicalformulationofanMDGasDirectedFormulae(DF).Then,theMDGsoperationsaredefinedandthecorrectnessproofofeachoperationisprovided.TheMDGreachabilityalgorithmisthendefinedasaconversionthatusesourMDGtheorywithinHOL.Finally,asetofexperimentationsoverbenchmarkcircuitshasbeenconductedtoensuretheapplicabilityandtomeasuretheperformanceofourapproach.

  • 标签: HOL定理 多路决策图 正确性 可达性
  • 简介:Epilepsyisacommonneurologicaldisorder,anditselectrophysiologycharacteristicisabnormallyhighexcitabilityandsynchronizationoftheneuralactivity.Thispaperfocusesonthestudyofmedialtemporallobeepilepsywithhippocampalsclerosis.Thehippocampusplaysanimportantroleinshort-termmemory.However,littleisknownabouttheconnectivitybetweenhippocampalstructuresandadjacentbrainregions.Thefunctionalandstructuralconnectivitybetweenpatientsandcontrolswasinvestigatedbyusingthetechniquesoffunctionalmagneticresonanceimaginganddiffusiontensorimaginginthepaper.ThreepairsofROIsrelatedtoworkingmemoryfromBOLD-fMRIdatawerechosen.TheseROIswereregistratedfromMNIspacetoindividualspaceandthefiberbundlebetweentwoROIsweretracedintheDTIimages.TheresultsshowthatthenumberoffiberbundleofpatientsreduceamongtheseROIs,suchaslefthippocampusandrighthippocampus,lefthippocampusandleftthalamus,lefthippocampusandleftfrontallobeandsoon.AndthenumberoffiberbundleofpatientsincreaseamongtheseROIs,suchasleftthalamusandrightthalamus,righthippocampusandrightthalamus.AndtheFAvaluesofthefiberbundlesofpatientsinsomeregionsrelatedtolefthippocampusdecrease.Thecauseofabnormalfunctionalandstructuralconnectionsduetothedamageofhippocampusinmedialtemporallobeepilepsyisstudiedfromanewperspective.

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  • 简介:因为为从空间数据库查询数据的SQL是无效的,询问逐渐地基于自然或视觉的语言成为一个吸引人的研究领域。然而,怎么定义并且表示与空间数据有关的自然语言仍然是巨大的问题。因为存在,方向关系的模型不能由一些普通概念的使用描述。Firstof所有,详细方向关系被建议描述与空间目标的内部有关的方向例如“一个区域的一条区域','东方边界的东方部分”,并且那么on.Secondly,由与外面的方向关系和to-pologicalrelations集成详细方向,几NLSR被定义,例如“一条道路越过一个湖的东方部分去”,“一条河沿着一个省的东方边界去,等等。最后,基于NLSR上述,一种自然空间质问语言(NSQL)被形成从空间数据库检索数据。

  • 标签: 信息系统 空间联系 清晰度 拓扑学 空间检测
  • 简介:Thecoolingandlubricationprocessisoneofthekeyprocessesincoldrolling,asitnotonlydeterminessurfacequalityandstripshape,butalsoreducestherollingpowerconsumptionandextendsthelifeoftherollevenduringhigh-speedoperation.Inthisstudy,aninnovativemethodcombiningemulsionlubricationandneatoillubricationwasusedtosolvesomeproblemsassociatedwithindividualpasses.Laboratorytestsonstainlesssteelstripsshowedthatthisnewlubricationmethodcouldimprovethesurfacequalityofthestrip,controltherollingfrictioninthedeformationzone,andhasthepotentialofmakinglubricationsystemssimplerandeasiertooperate,allwhilereducingthenegativeenvironmentalimpactfromemulsionprocessing.

  • 标签: 乳液润滑 油润滑 冷轧 不锈钢带材 表面质量 实验室测试