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I am reading an article using the EM algorithm and in the M-Step they are maximizing this equation:

\sum_t \sum_i E_{A} [log p(y_i^t,z_i|x_i)]

Could someone please tell me what is the explicit form of this equation? Is E_{A} [log p(y_i^t,z_i|x_i)] equal to A*[log p(y_i^t,z_i|x_i)] ?

Thank you very in advance!