Posted on 07/20/2022 3:25:25 PM PDT by devane617
For workers who use machine-learning models to help them make decisions, knowing when to trust a model's predictions is not always an easy task, especially since these models are often so complex that their inner workings remain a mystery.
Users sometimes employ a technique, known as selective regression, in which the model estimates its confidence level for each prediction and will reject predictions when its confidence is too low. Then a human can examine those cases, gather additional information, and make a decision about each one manually.
But while selective regression has been shown to improve the overall performance of a model, researchers at MIT and the MIT-IBM Watson AI Lab have discovered that the technique can have the opposite effect for underrepresented groups of people in a dataset. As the model's confidence increases with selective regression, its chance of making the right prediction also increases, but this does not always happen for all subgroups.
For instance, a model suggesting loan approvals might make fewer errors on average, but it may actually make more wrong predictions for Black or female applicants. One reason this can occur is due to the fact that the model's confidence measure is trained using overrepresented groups and may not be accurate for these underrepresented groups.
Once they had identified this problem, the MIT researchers developed two algorithms that can remedy the issue. Using real-world datasets, they show that the algorithms reduce performance disparities that had affected marginalized subgroups.
(Excerpt) Read more at techxplore.com ...
There is nothing to indicate an AI component in this device.
From the link: "It is meant to survive the end of Earth and beyond."
It seems to me, that is a very unlikely operating lifetime. In any case, the device has not yet been built. But they are taking donations for this worthy cause....
That sounds like a truly outstanding application with some extremely challenging techniques required. And very high stakes in getting a valid model with accurate computations.
I am in awe.
Damn. Wrong link. Suppose to be complete this year. Oh well, tomorrows another day. 🙂
Suffice to say, it was a fun project. I had 25 software engineers working for me for about 18 months. An very qualified aeronautical engineer checked all of my work and regularly issued "corner case" challenges to ensure it worked as required.
The one thing I most wanted to do on the program was participate in the field delivery. The airfield was in Wales. I have worked for a few years to become fluent in Welsh and hoped for a shot at practicing that on the ground. I filed all the paperwork, but the delivery went so smoothly that a smaller team was able to knock it out quickly.
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