Optimizing the constants of a predefined function

[Ahmet Kurtoglu]

Hello 

Is it possible to define a function structure e.g., y = c1*x1^c2 + c3*x2^c4 + .... and optimize the constant for the lowest MSE or best R2, using symbolic regression in HL? 

Also, is there a way to force the algorithm to use all inputs?

Regards, 

Ahmet