Add Evaluate usage for scikit-learn

[awinml]

Reference Issues/PRs

Fixes #326

What does this implement/fix?

Adds an example demonstrating the integration of evaluate with the scikit-learn framework.

Note:

Instead of creating a section in metrics_integrations.mdx, I have decided to create sklearn_integrations.mdx so that it is consistent with the previous section on Transformers.

cc @lvwerra @osanseviero

[HuggingFaceDocBuilderDev]

The documentation is not available anymore as the PR was closed or merged.

[lvwerra]

Hi @awinml, this looks great - thanks for adding! Left a few minor comments.

[lvwerra]

Two nits and then we can merge :) Something is a bit off with the PR since it also shows changes to some previous changes. Looking at the history it seems like there have been multiple branches starting in different points of the git history that got merged for this PR. I think it's just git that's confused but and when we merge it should be ok.

[awinml]

Two nits and then we can merge :) Something is a bit off with the PR since it also shows changes to some previous changes. Looking at the history it seems like there have been multiple branches starting in different points of the git history that got merged for this PR. I think it's just git that's confused but and when we merge it should be ok.

I rebased the merge with master by mistake. So it pulled in all those commits.
I chose not to remove them individually, because it would make the PR extremely messy.
It should be ok when we merge.

[lvwerra]

Just one minor comment left then we can merge. Let's add this and wait for the CI to get green to merge.

[awinml]

I have added the actual value for the accuracy.

[awinml]

@lvwerra I reverted the incorrect commits and merged with main. The CI tests fail on unrelated tests. Do you have any ideas on how to fix it?

[lvwerra]

You should not revert the changes. Ideally you just merge main from evaluate into your branch. There was a fix for the error in the CI on main.

[awinml]

@lvwerra I am extremely sorry for the messy commit history. I did a complete rebase and cherry picked all the correct commits.
A merge from main fixed all the errors and the CI passed successfully. Thank you for your help!

[lvwerra]

No worries, that's why we squash :) Thanks for your contribution!