Showing papers in "Journal of the royal statistical society series b-methodological in 1999"
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166 citations
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TL;DR: In this article, a simple explicit formula for the matrix of second derivatives of the observed data log-likelihood in terms of derivatives of a criterion function invoked by the EM algorithm is provided.
Abstract: Summary. A simple explicit formula is provided for the matrix of second derivatives of the observed data log-likelihood in terms of derivatives of the criterion function (the conditional expectation of the complete data log-likelihood given the observed data) invoked by the EM algorithm.
160 citations