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Литература
'''for''' t '''in''' [1, T]
probabilities[s, t] = (alpha(s, t) * beta(s, t)) / chain_probability
=== Литература ===
* [[wikipedia:Forward–backward_algorithm|Wikipedia {{---}} Forward–backward algorithm]]
* [http://web.cecs.pdx.edu/~mperkows/JUNE1a/010.Intorduction-to-HMM.ppt|Forward/Backward Algorithms for Hidden Markov Models]
* [http://faculty.washington.edu/fxia/courses/LING572/forward_backward.ppt|Forward-backward algorithm, Fei Xia, University of Washington]
[[Категория: Дискретная математика и алгоритмы]]
[[Категория: Марковские цепи]]
