Support fbeta score with beta=0.5 as a built-in metric #486
Description
It would be nice to support some variants of fbeta_score natively in SKLL - F(0.5) at the very least because of applications in GED/GEC.
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It would be nice to support some variants of fbeta_score natively in SKLL - F(0.5) at the very least because of applications in GED/GEC.