I gave a talk Is machine learning good or bad for science? in Vienna today (slides here). I spent a lot of time on the ontology and epistemology of it all. One thing that led to some debate afterwards is my claim (at the end of the talk) that using extremely flexible machine learning methods can be extremely conservative in some cases: If you are modeling a nuisance that possibly interferes with your signal of interest, and you used a very flexible model, you have a strong argument that you tried as hard as you could (in some sense) to dilute your signal of interest with that nuisance. My talk was followed by interesting discussion with many, and a lovely dinner with Viennese (not just Austrian, but Viennese) wine.
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