Why NLL metric is a negative value? #381
Jamshid-Ganiev
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Could you clarify why the Negative Log-Likelihood (NLL) values reported at the end are negative? Additionally, can you point me to the specific mathematical formula in both the NGBoost paper and the source code that explains how these negative NLL values arise?
if it is a loss function, should it not be decrased to zero not minus?
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