Getting error'"Objective function is undefined at initial point. Fminunc cannot continue''

I have tried a code for multiclass logistic regression based on IRIS dataset. I have tried it for my dataset.

I am getting this error "Objective function is undefined at initial point. Fminunc cannot continue".

Answer 1

[Matt J]

Check what value is being returned by your function at the initial point.

[SWATHY Kakkooth]

The cost value returned is NaN. How this can be avoided?

[Torsten]

By searching why your code produced a NaN result for the cost at the initial point.