Current version used for mixture paper #9
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we can still encounter -inf. our actual method to prevent -inf in the complete likelihood is not sufficient. since The EM algorithm fixes the responsabilities in a first step and then optimizes the mixture parameters, we can get zeros in the mixture coefficients while the responsabilities were not set to 0. To prevent the -inf in the log likelihood I manually set -inf entries to 0. This once again is not an ideal solution but a workaround to train the model for the time being
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Here the current dev version that is used for the mixture paper is merged into the lycosystem