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2004/11/161 A Tutorial on Hidden Markov Models and Selected Applications in Speech Recognition LAWRENCE R. RABINER, FELLOW, IEEE Presented by: Chi-Chun.

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Presentation on theme: "2004/11/161 A Tutorial on Hidden Markov Models and Selected Applications in Speech Recognition LAWRENCE R. RABINER, FELLOW, IEEE Presented by: Chi-Chun."— Presentation transcript:

1 2004/11/161 A Tutorial on Hidden Markov Models and Selected Applications in Speech Recognition LAWRENCE R. RABINER, FELLOW, IEEE Presented by: Chi-Chun Hsia

2 2004/11/162 Markov Chain

3 2004/11/163 Markov Chain

4 2004/11/164 Markov Chain And then, what does “hidden” means? It results in a Geometric Distribution

5 2004/11/165 Extension to Hidden Markov Model

6 2004/11/166 Extension to Hidden Markov Model

7 2004/11/167 Elements of an HMM

8 2004/11/168 The Three Basic Problems

9 2004/11/169 Solution to Problem 1

10 2004/11/1610 Solution to Problem 1

11 2004/11/1611 Forward-Backward Procedure

12 2004/11/1612 Forward-Backward Procedure

13 2004/11/1613 Forward-Backward Procedure

14 2004/11/1614 Forward-Backward Procedure

15 2004/11/1615 Solution to Problem 2

16 2004/11/1616 Solution to Problem 2

17 2004/11/1617 Viterbi Algorithm

18 2004/11/1618 Viterbi Algorithm

19 2004/11/1619 Solution to Problem 3

20 2004/11/1620 Solution to Problem 3

21 2004/11/1621 EM Algorithm for HMM X.D. HUANG, Y. ARIKI, M.A. JACK HIDDEN MARKOV MODELS FOR SPEECH RECOGNITION EDINBURGH UNIVERSITY PRESS

22 2004/11/1622 Types of HMMs

23 2004/11/1623 Continuous Type HMMs

24 2004/11/1624 Autoregressive HMMs

25 2004/11/1625 Optimization Criterion Maximum Likelihood (ML) Maximum Mutual Information (MMI) Minimum Discrimination Information (MDI) Minimum Classification Error (MCE) Chang.

26 2004/11/1626 Implementation Issues for HMMs Scaling Multiple Observation Sequences Initial Estimates of HMM Parameters Effect of Insufficient Training Data Choice of Model

27 2004/11/1627 Scaling

28 2004/11/1628 Scaling

29 2004/11/1629 Scaling And so on and on and on and on……………..

30 2004/11/1630 Multiple Observation Sequences

31 2004/11/1631 Initial Estimates of HMM Parameters

32 2004/11/1632 Effect of Insufficient Training Data

33 2004/11/1633 Choice of Model

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