I would like to suggest adding the gmm tag for growth mixture modeling. This would help when asking questions specific to this area. There are a number of questions on this topic, e.g.:
I don't think that would be a good idea - "GMM" is a little ambiguous and could mean Gaussian Mixture Model, which is currently tagged
Nothing wrong with adding
growth-mixture-model as a tag though. It looks like there already exists
growth-model which has been used on growth mixture models in the past.
growth-mixture-model as a new tag. I don't know if it should be as synonym of
growth-model or if it is a special case.
Argh. A few weeks ago, I disambiguated
generalized-moments (the generalized method of moments was too long for a tag) in econometrics;
growth-model from social scientists; and
gaussian-mixture from computer scientists and machine learners. Unfortunately,
gmm as a tag disappeared, along with the explanation of why this is a poor tag (Corone explained it all). If
gmm appears again, I will go and weed it out, for the obvious reasons, but a better way would be to avoid it from the outset.