Implement element-wise-product. Now the results is the same as formulas on page 57 in the paper except the Formula 198. Add matrix adaptor to plusOp in MatrixMatrixFuncHelper.hpp which slipped from my finger
Complete element-wise-product. The Formula(198) on page 57 is wrong. It should be X'.*((X.*X')^-T + (X.*X')^-1)