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ImbalancedSVMClassificationMethodBasedonIncrementalLearning

  

  1. (1.QinxianNormalInstitute,ChangzhiUniversity,Changzhi046400,China;
     2.SchoolofComputerandInformationTechnology,ShanxiUniversity,Taiyuan030006,China)
  • Received:2017-11-17 Online:2018-08-23 Published:2018-08-27

Abstract: Thispaperpresentsanimbalancedsupportvectormachine(SVM)basedonincrementallearning,namelyISVM_IL,tosolvetheimbalancedclassificationproblemthatthetraditionalSVMclassificationmethodcannotsolve.Firstly,thismethodextractssomesamplesfromthemajoritynegativeclass,andtheinitialclassifiercanbeobtainedbytrainingSVMonthesesamplesandminoritypositiveclasssample.Then,accordingtotherelationshipbetweentheclassifierandothernegativesamples,thenearestsampletotheclassifierisselectedasanincrementalsampletojointhetrainingsettoparticipateintheSVMtraining.Therefore,thenegativeclasssizeoftheactualtrainingisreducedandtheperformanceofimbalancedclassificationisimproved.TheexperimentresultdemonstratesthattheproposedISVM_ILmethodcanimprovetheclassificationperformanceofimportantminorityclasssampleofimbalancedclassification.

Key words: supportvectormachine, imbalancedclassification, incrementallearning, ISVM_ILalgorithm

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