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关于sparseCodingFeatureCost.m第42行,为何是平方而不是公式中的s乘以s的转置?
这一行
sparsityMatrix = sqrt(groupMatrix_(featureMatrix.^2)+epsilon);
按照UFLDL上的公式不应该是这样吗?
sparsityMatrix = sqrt(groupMatrix_(featureMatrix * featureMatrix' )+epsilon);
求指教,多谢!
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