FitFailedWarning: Estimator fit failed. The score on this train-test partition for these parameters will be set to nan

We Are Going To Discuss About FitFailedWarning: Estimator fit failed. The score on this train-test partition for these parameters will be set to nan. So lets Start this Python Article.

FitFailedWarning: Estimator fit failed. The score on this train-test partition for these parameters will be set to nan

  1. How to solve FitFailedWarning: Estimator fit failed. The score on this train-test partition for these parameters will be set to nan

    I was able to reproduce the problem and the code fails to fit because there is an extra space in your eta parameter! Instead of this:
    {'eta ':[0.01, 0.05, 0.1, 0.2]},...
    Change it to this:
    {'eta':[0.01, 0.05, 0.1, 0.2]},...
    The error message was unfortunately not very helpful.

  2. FitFailedWarning: Estimator fit failed. The score on this train-test partition for these parameters will be set to nan

    I was able to reproduce the problem and the code fails to fit because there is an extra space in your eta parameter! Instead of this:
    {'eta ':[0.01, 0.05, 0.1, 0.2]},...
    Change it to this:
    {'eta':[0.01, 0.05, 0.1, 0.2]},...
    The error message was unfortunately not very helpful.

Solution 1

I was able to reproduce the problem and the code fails to fit because there is an extra space in your eta parameter! Instead of this:

{'eta ':[0.01, 0.05, 0.1, 0.2]},...

Change it to this:

{'eta':[0.01, 0.05, 0.1, 0.2]},...

The error message was unfortunately not very helpful.

Original Author TC Arlen Of This Content

Solution 2

Also for example, if for a LogisticRegression
you set the grid to sth like

grid_lr = {
'cls__class_weight': [None, 'balanced'],
'cls__C': [0, .001, .01, .1, 1]
}

You’ll get a similar error; the reason being that C could only take positive float values.
Hence, simply double checking the naming or the values of the hyperparameters should be enough to resolve this issue.

Original Author heschmat Of This Content

Conclusion

So This is all About This Tutorial. Hope This Tutorial Helped You. Thank You.

Also Read,

ittutorial team

I am an Information Technology Engineer. I have Completed my MCA And I have 4 Year Plus Experience, I am a web developer with knowledge of multiple back-end platforms Like PHP, Node.js, Python and frontend JavaScript frameworks Like Angular, React, and Vue.

Leave a Comment