Examples of "Hard" Expectation Maximization other than clustering?

Question

Are there examples of learning algorithms(other than k-means clustering) which fit the paradigm of Hard-EM?

By hard EM, I mean the variant described in here.

Answer 1

I found there is a Hard EM variant for training HMMs/PCFGs. Details can be found in this and this paper.

You are better off searching for Viterbi Training instead of Hard EM. The community uses this variant of EM under different names; it is rarely referred to as Hard EM (until recently).

Will be adding more details if I find something relevant.