示例#1
0
 public static final DenseMatrix varOverCols(DenseMatrix mat) {
   return mat.pow(2).sumOverCols().sub(mat.sumOverCols().pow(2).div(mat.cols)).div(mat.cols - 1);
 }
示例#2
0
 public static final DenseMatrix meanOverCols(DenseMatrix mat) {
   return mat.sumOverCols().div(mat.cols);
 }