[scikit-learn] Fairness Metrics

[Andreas Mueller]

Hi Josh.

Yes, as I mentioned briefly in my second email, you could start a 
scikit-learn-contrib project that implements these.
Or, if possible, show how to use Aequitas with sklearn.
This would be interesting since it probably requires some changes to the 
API, as our scorers have no side-information,
such as the protected class.
This is actually an interesting instance of 
https://github.com/scikit-learn/scikit-learn/issues/4497
an API discussion that has been going on for at least 3 years now.

Cheers,
Andy

On 10/30/18 1:05 PM, Feldman, Joshua wrote:
> Hi Andy,
>
> Yes, good point and thank you for your thoughts. The Aequitas project 
> stood out to me more because of their flowchart than their auditing 
> software because, as you mention, you always fail the report if you 
> include all the measures!
>
> Just as with choosing a machine learning algorithm, there isn't a one 
> size fits all solution to ML ethics, as evidenced by the contradicting 
> metrics. A reason why I think implementing fairness metrics in sklearn 
> might be a good idea is that it would empower people to choose the 
> metric that's relevant to them and their users. If we were to 
> implement these metrics, it would be very important to clarify this in 
> the documentation.
>
> Tools that could change predictions to be fair according to one of 
> these metrics would also be very cool. In the same vein as my thinking 
> above, we would need to be careful about giving a false sense of 
> security with the "fair" algorithms such a tool would produce.
>
> If you don't think now is the time to add these metrics, is there 
> anything I could do to move this along?
>
> Best,
> Josh
>
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