In case there is an available segmentation, the maximisation step is overridden and the values r and s r 1 are fixed to that provided by the segmentation.
dA sequences until turn t only affect the first t turns in the dialogue (i.e., Pr(W the terms in the product in Equation 2 are rewritten as: This model in Equation 3 can be simplified with some assumptions: the current dA depends only on the previous n − 1 dA and the sequence of words of the current segment depends only on the current dA.