Durationally Constrained Training of Hmm without Explicit State Dura Tional Pdf
نویسنده
چکیده
Durational behaviour of the HivfM is 111vestigmed in terms of an analy tical probability density function oi the whole phone model for arbitrary transitional topologies, given by lhe 1ransition pro1,;.bilitie<= oi A-parameters. Linear l(lpol0gy i� used as an example. Based on such an analysis, the durational behaviour is manipulated by modifying Lhc A paramcters in a procedure embedded in the st:mdard Baum-Welch l'v!L-estimmion algorithm by introducing extra durational constraints on the whole-model durational s1.atis1ics. The effect of such manipulation is then tested with both automatic speech recognition and segmentation. resulting in n1oderate improvements in pcrforrnancc.
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