viterbi algorithm 维特比算法
Abstrucf-TheViterbialgorithm(VA)isarecursiveoptimalsolutiontotheproblemofestimatingthestatesequenceofadiscretetimefinite-stateMarkovprocessobservedinmemorylessnoise.Manyproblemsinareassuchasdigitalcommunicationscanbecastinthisform.Thispapergivesatutorialexpositionofthealgorithmandof
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