Use of Custom Function

bhctuary

I have a target variable "Actual" and three potential input variables X1, X2, X3.

I want the minimum error of target variable Actual to be of the form Actual = cf(X1,X2,X3)+ (1-c)g(X1,X2,X3) where c is a constant between 0 and 1 (inclusive). How would I write this in the Custom Formula box?

Is this possible to perform in TuringBot now?

Thank You,

Bert

admin

Hi @bhctuary. You can use:

Actual = f() * f(X1,X2,X3) + (1-f()) * f(X1,X2,X3)

In the custom formula syntax, f(X1,X2,X3) is a placeholder for an unknown function of X1, X2, and X3. The two f(X1,X2,X3) in the formula above will be optimized independently.
Similarly, the two constants f() will be optimized independently.

This is the closest you can get with the current version of the program. It is not currently possible to constrain the two constants to be related to each other.