学科分类
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17 个结果
  • 简介:纸基于复制核Hilbert空格与Multicategory支持向量机器(MSVM)分类器的错误分析有关。我们选择多项式核为纺织品商人核并且与DeLaVall茅ePoussin工具给错误估计。我们也介绍样品错误的标准评价,并且导出明确的学习率。关键词支持向量机器分类-学习的率-复制核Hilbert空格-DeLaVall茅ePoussin工具AMS(2010)题目分类42A08-68T05-62J02由中华人民共和国的国家NSF(10871226)支持了。

  • 标签: 支持向量机分类器 误差分析 再生核希尔伯特空间 估计方法 抽样误差 多项式
  • 简介:这篇论文的目的是提供错误分析为多范畴支持向量机器(MSVM)classificaton问题。我们为MSVM建立一致集聚途径并且估计错误分类错误。我们这里克服的主要困难是围住偏移量向量。作为结果,当核多项式的度足够大时,我们证实有多项式核的MSVM分类算法总是是有效的。最后,集中和例子的率被给表明主要结果。

  • 标签: 误分类 支持向量机 计算方法 评估方法
  • 简介:一张链图允许指导并且未受指导的边,并且包含二的内在的数学性质。学习图形的模型的一个重要方法是使用得分标准测量图结构多好适合数据。在这份报纸,我们为基于Kullback鈥揕eibler距离学习链图的现在的得分标准。它是20张相等的、也就是说相等的链图获得一样的分数,因此执行平均的模型选择和模型能被用来。关键词链图-Markov等价-得分标准先生(2000)题目分类62B10-62H99由NNSFC(39930160)支持了;部分由BNU青春基础(104951)支持了

  • 标签: Chain图 Markov等价性 模型选择 Kullback Leibler距离
  • 简介:Thispaperstudiesonlineschedulingofjobswithkindreleasetimesonasinglemachine.Here“kindreleasetime”meansthatinonlinesetting,nojobscanbereleasedwhenthemachineisbusy.EachjobJhasakindreleasetimer(J)≥0,aprocessingtimep(J)>0andadeadlined(J)>0.Thegoalistodetermineaschedulewhichmaximizestotalprocessingtime(∑p(J)E(J))ortotalnumber(∑E(J))oftheacceptedjobs.Forthefirstobjectivefunction∑p(J)E(J),wefirstpresentalowerbound√2,andthenprovideanonlinealgorithmLEJwithacompetitiveratioof3.Thisisthefirstdeterministicalgorithmfortheproblemwithaconstantcompetitiveratio.Whenp(J)∈{1,k},k>1isarealnumber,wefirstpresentalowerboundminf(1+k)/k,2k/(1+k)g,andthenweshowthatLEJhasacompetitiveratioof1+┌k┐=k.Inparticular,whenalltheklengthjobshavetightdeadlines,wefirstpresentalowerboundmax{4=(2+k),1}(for∑p(J)E(J))and4/3(for∑E(J)).ThenweprovethatLEJis┌k┐/k-competitivefor∑p(J)E(J)andweprovideanonlinealgorithmHwithacompetitiveratioof2┌k┐/(┌k┐+1)forthesecondobjectivefunction∑E(J).

  • 标签: SCHEDULING ONLINE algorithm KIND RELEASE time
  • 简介:Thispaperusesthegeometricsingularperturbationtheorytoinvestigatedynamicalbehaviorsandsingularitiesinafundamentalpowersystempresentedinasingle-machineinfinite-busformulation.ThepowersystemcanbeapproximatedbytwosimplifiedsystemsSandF,whichcorrespondrespectivelytoslowandfastsubsystems.Thesingularities,includingHopfbifurcation(HB),saddle-nodebifurcation(SNB)andsingularityinducedbifurcation(SIB),arecharacterized.WeshowthatSNBoccursatPTc=3.4382,SIBatPTO=2.8653andHBatPTh=2.802forthesingularperturbationsystem.ItmeansthatthepowersystemwillcollapsenearSIBwhichprecedesSNBandthatthepowersystemwilloscillatenearHBwhichprecedesSIB.Inotherwords,thepowersystemwillloseitsstabilitybymeansofoscillationneartheHBwhichprecedesSIBandSNBasPTisincreasingtoacriticalvalue.Theboundaryofthestabilityregionofthesystemcanbedescribedapproximatelybyacombinationofboundariesofthestabilityregionsofthefastsubsystemandslowsubsystem.

  • 标签: 动力学 常规混乱 鞍节点分枝 霍普夫分枝 力量系统稳定性 数理方程
  • 简介:Inthispaper,weconsiderParallelMachinesSchedulingwithnonsimultaneousmachineavailabletime.WegivetheexactworstcaseperformanceboundofMLPTproposedbyLee.Furthermore,twoothermodifiedLPTalgorithmsarediscussed.Thepaperisendedbynumericalex-perimentsofthesealgorithms.

  • 标签: LPT算法 机器调度 非奇异性 可用时间
  • 简介:students'mathematicalunderstanding,theyarenotableyettomastertothenextdegree.Thedecreasingofstudents'MathqualitycanbeseenonthesurveydataonProgramforInternationalStudentAssessment(PISA)thatconductedeachofthreeyears.On2003,Indonesiawasinthe38^thfrom40stateswiththescore360.On2006,itwasin50thfrom57stateswiththescore391.

  • 标签: 数学 系统科学