简介:ThispaperproposesaPCAandKPCAself-fusionbasedMSTARSARautomatictargetrecognitionalgorithm.Thisalgorithmcombinesthelinearfeatureextractedfromprincipalcomponentanalysis(PCA)andnonlinearfeatureextractedfromkernelprincipalcomponentanalysis(KPCA)respectively,andthenutilizestheadaptivefeaturefusionalgorithmwhichisbasedontheweightedmaximummargincriterion(WMMC)tofusethefeaturesinordertoachievebetterperformance.Thelinearregressionclassifierisusedintheexperiments.Theexperimentalresultsindicatethattheproposedself-fusionalgorithmachieveshigherrecognitionratecomparedwiththetraditionalPCAandKPCAfeaturefusionalgorithms.
简介:摘要高中阶段,解一元高次不等式的常用方法就是根轴法。很多版本的教学参考书中都介绍了这种方法。然而,这些教参介绍的只是一个做题的程序,至于为什么要那样做,书中并未解释。本文首先介绍了根轴法解一元高次不等式的基本步骤,然后探讨根轴法的理论依据,指出了根轴法的不足,最后介绍了一种优于根轴法的解一元高次不等式的通用方法。