[scikit-learn] sample_weight for cohen_kappa_score

[Poughon Victor]

I had a go at a PR (with a caveat for testing):
https://github.com/scikit-learn/scikit-learn/pull/7569

Victor Poughon

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De : scikit-learn [scikit-learn-bounces+victor.poughon=cnes.fr at python.org] de la part de Andreas Mueller [t3kcit at gmail.com]
Envoyé : lundi 3 octobre 2016 15:09
À : Scikit-learn user and developer mailing list
Objet : Re: [scikit-learn] sample_weight for cohen_kappa_score

Hm it sounds like "weights" should have been called "weighting" maybe?
Not sure if it's worth changing now, as we released it already.

And I think passing the weighting to the confusion matrix is correct.
There should be tests for weighted metrics to confirm that.

PR welcome.

On 10/03/2016 05:21 AM, Poughon Victor wrote:
> Hello,
>
> I'd like to use samples weights together with sklearn.metrics.cohen_kappa_score,
> in a similar way to other metrics which have this argument. Is it as simple as
> forwarding the weights to the confusion_matrix call? [0]
>
> If yes I'm happy to work on the pull request.
>
> In that case the other argument "weights" might be confusing but it's too late
> to rename it, right?
>
> Cheers,
>
> Victor Poughon
>
> [0] https://github.com/scikit-learn/scikit-learn/blob/dee786a/sklearn/metrics/classification.py#L331
>
>
>
>
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