Projected Gradient Methods for Non-negative Matrix Factorization
ProjectedGradientMethodsforNon-negativeMatrixFactorizationChih-JenLinDepartmentofComputerScienceAbstractNon-negativematrixfactorization(NMF)canbeformulatedasaminimizationproblemwithboundconstraints.Althoughbound-constrainedoptimizationhasbeenstudiedextensivelyinboththeoryandpractice,sofarno
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