Stjepan Brbot

I agree, only small tweeks would be needed to implement multivariate linear regression since it is just matter of matrix calculation (ß=(X'X).inv)X'Y) and MathPHP does have support for matrices ....

I intend will switch from old regression library to MathPHP but just let me check if MathPHP's matrix->inverse() method implements Gauss-Jordan optimization/elimination (or any other better optimization if there is...

Thanks Mark, you're right that's what I need. I see now, MathPHP does use Gauss-Jordan elimination! I was wrong, did not see it on first sight. However, reducing matrix on...

Dear Mr Rogoyski First of all, thank you very much for your time. I really appreciate it and your effort. I was dealing with some cases where Multivariate Linear Regression...

There is SquaredObjectMatrix which should suffice ( https://en.wikipedia.org/wiki/DFT_matrix). This is squared matrix with Complex objects and there's no need for inverse() method. On Fri, Dec 8, 2017 at 8:24 AM,...