Mixture Weights
The coefficients pi_k give the prior probability that a data point was generated by component k; they must be non-negative and sum to 1, making the mixture a valid density and the weights a categorical distribution over components.
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The coefficients pi_k give the prior probability that a data point was generated by component k; they must be non-negative and sum to 1, making the mixture a valid density and the weights a categorical distribution over components.
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