static void ComputeColSumAndRowSum(const std::vector<std::map<int,double> >& matrixDeno,
std::vector<std::map<int,double> >& deno, std::vector<std::map<int,double> >& denoReverse);
private:
static void ComputeColSumAndRowSum(const std::vector<std::map<int,double> >& matrixDeno,
std::vector<std::map<int,double> >& deno, std::vector<std::map<int,double> >& denoReverse);
private: