# #StackBounty: #references #scikit-learn #terminology #gaussian-mixture-distribution #generative-models What is the "lower bound av…

### Bounty: 50

In Scikit Learn’s GMM class, it says that GMM training algorithm stops according to the "lower bound average gain"

https://scikit-learn.org/stable/modules/generated/sklearn.mixture.GaussianMixture.html

After some digging, almost all references to this term traces back to this doc.

Does anyone know what this function might be alluding to? I think knowing the precise stopping criterion for GMM is quite important in practice.

Get this bounty!!!

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