排序方式: 共有1344条查询结果,搜索用时 406 毫秒
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A joint clustering and classification approach is proposed.This approach exploits unlabeled data for efficient clustering,which is applied in the classification with support vector machine(SVM) in the case of small-size training samples.The proposed method requires no prior information on data labels,and yields better cluster structures.Through cluster assumption and the notions of support vectors,the most confident k cluster centers and data points near the cluster boundaries are labeled and used to train a reliable SVM classifier.Our method gains better estimation of data distributions and mitigates the unrepresentative problem of small-size training samples.The data set collected from Landsat Thematic Mapper(Landsat TM-5) validates the effectiveness of the proposed approach. 相似文献
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Cha Kewen Li Chuanzhong 《大学数学》1998,(2)
本文首先建立了按年龄分组的可再生资源,各年龄组数量应满足的向量微分模型.然后利用所建模型成功地解决了CMCM96A题中的问题2. 相似文献
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Qu Chengqin 《东北数学》1998,(3)
SpectralGeometryofClosedMinimalRealHypersurfacesinCPn+1andQPn+1*)QuChengqin(瞿成勤)(DepartmentofMathematics,NanjingUniversity,Na... 相似文献
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CrostalkNoiseSuppresioninVolumeHolographywithaCompositeReadingBeamLIXiaochunWUMinxianHEQingshengJINGuofan(DepartmentofPreci... 相似文献
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CoherenceTimeMeasurementofPicosecondPulsesUsingReverseSaturableAbsorptioninLeadPhthalocyanineLIFengSONGYinglinYANGKunLUIShuti... 相似文献
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Soliton Transmission Research on using Dispersion Step Fiber Chain Instead of Soliton Fiber 总被引:1,自引:0,他引:1
YU Jianjun YANG Bojun GUAN KejianYANG Qimin ZHANG Xiaoguan 《Chinese Journal of Lasers》1997,6(3):262-268
SolitonTransmisionResearchonusingDispersionStepFiberChainInsteadofSolitonFiberYUJianjunYANGBojun+GUANKejianYANGQiminZHANGXia... 相似文献
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ReducingSubspacesofCertainAnalyticToeplitzOperatorsontheBergmanSpace*)SunShanli(孙善利)andWangYuejian(王悦健)(DepartmentofMathemati... 相似文献
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SquezingandHigher┐orderSqueezingPropertiesofEigenstatesoftheOperatorakqsWANGJisuoSUNChangyong(DepartmentofPhysics,LiaochengT... 相似文献
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Li Chunming Liu Chengshi 《物理与工程》1998,(4)
本文提出了用光纤传输激光进行F-P标准具实验的方法,测量了激光的波长和谱线宽度. 相似文献