Ιδρυματικό Αποθετήριο
Πολυτεχνείο Κρήτης
Πολυτεχνείο Κρήτης
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| URI | http://purl.tuc.gr/dl/dias/04E5D722-6179-44E9-A174-4A2CA13F096E | - |
| Αναγνωριστικό | http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=748122&url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel4%2F89%2F16149%2F00748122.pdf%3Farnumber%3D748122 | - |
| Αναγνωριστικό | https://doi.org/10.1109/89.748122 | - |
| Γλώσσα | en | - |
| Μέγεθος | 11 pages | en |
| Τίτλος | Maximum-likelihood stochastic-transformation adaptation of hidden Markov models | en |
| Δημιουργός | Diakoloukas Vasilis | en |
| Δημιουργός | Διακολουκας Βασιλeioς | el |
| Δημιουργός | Digalakis Vasilis | en |
| Δημιουργός | Διγαλακης Βασιλης | el |
| Εκδότης | Institute of Electrical and Electronics Engineers | en |
| Περίληψη | The recognition accuracy in previous large vocabulary automatic speech recognition (ASR) systems is highly related to the existing mismatch between the training and testing sets. For example, dialect differences across the training and testing speakers result in a significant degradation in recognition performance. Some popular adaptation approaches improve the recognition performance of speech recognizers based on hidden Markov models with continuous mixture densities by using linear transformations to adapt the means, and possibly the covariances of the mixture Gaussians. The linear assumption, however, is too restrictive, and in this paper we propose a novel adaptation technique that adapts the means and, optionally, the covariances of the mixture Gaussians by using multiple stochastic transformations. We perform both speaker and dialect adaptation experiments, and we show that our method significantly improves the recognition accuracy and the robustness of our system. The experiments are carried out with SRI's DECIPHER speech recognition system | en |
| Τύπος | Peer-Reviewed Journal Publication | en |
| Τύπος | Δημοσίευση σε Περιοδικό με Κριτές | el |
| Άδεια Χρήσης | http://creativecommons.org/licenses/by/4.0/ | en |
| Ημερομηνία | 2015-11-02 | - |
| Ημερομηνία Δημοσίευσης | 1999 | - |
| Θεματική Κατηγορία | Speech recognition | en |
| Βιβλιογραφική Αναφορά | V. Diakoloukas and V. Digalakis, "Maximum-likelihood stochastic-transformation adaptation of hidden Markov model," IEEE Trans. Speech Audio Process., vol. 7, no. 2, pp. 177-187, Mar. 1999. doi:10.1109/89.748122 | en |
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