Unsupervised Clustering, Expectation Maximization, Gaussian Mixture Model, K Means Clustering, Tensorflow Probability.
1, and in the worst case when σ2 = 0, the second term will explode to infinity causing the overall likelihood to be very high. This will cause problems in MLE as it will lead to overfitting. The problem is called the problem of singularity. Also, the optimization problem is also difficult, as there