Ιδρυματικό Αποθετήριο
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Πολυτεχνείο Κρήτης
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| URI | http://purl.tuc.gr/dl/dias/DD5D0269-6830-4FB8-8778-977FC068EAEE | - |
| Αναγνωριστικό | https://doi.org/10.1109/ICASSP.2007.366947 | - |
| Αναγνωριστικό | http://ieeexplore.ieee.org/abstract/document/4218135/ | - |
| Γλώσσα | en | - |
| Τίτλος | Estimation of general identifiable linear dynamic models with an application in speech recognition | en |
| Δημιουργός | Tsontzos Georgios | en |
| Δημιουργός | Diakoloukas Vasilis | en |
| Δημιουργός | Διακολουκας Βασιλeioς | el |
| Δημιουργός | Koniaris, Christos, 1979- | en |
| Δημιουργός | Digalakis Vasilis | en |
| Δημιουργός | Διγαλακης Βασιλης | el |
| Εκδότης | Institute of Electrical and Electronics Engineers | en |
| Περίληψη | Although hidden Markov models (HMMs) provide a relatively efficient modeling framework for speech recognition, they suffer from several shortcomings which set upper bounds in the performance that can be achieved. Alternatively, linear dynamic models (LDM) can be used to model speech segments. Several implementations of LDM have been proposed in the literature. However, all had a restricted structure to satisfy identifiability constraints. In this paper, we relax all these constraints and use a general, canonical form for a linear state-space system that guarantees identifiability for arbitrary state and observation vector dimensions. For this system, we present a novel, element-wise maximum likelihood (ML) estimation method. Classification experiments on the AURORA2 speech database show performance gains compared to HMMs, particularly on highly noisy conditions. | en |
| Τύπος | Δημοσίευση σε Συνέδριο | el |
| Τύπος | Conference Publication | en |
| Άδεια Χρήσης | http://creativecommons.org/licenses/by/4.0/ | en |
| Ημερομηνία | 2015-11-08 | - |
| Ημερομηνία Δημοσίευσης | 2007 | - |
| Θεματική Κατηγορία | HMMs (Hidden Markov models) | en |
| Θεματική Κατηγορία | hidden markov models | en |
| Θεματική Κατηγορία | hmms hidden markov models | en |
| Θεματική Κατηγορία | Mechanical speech recognizer | en |
| Θεματική Κατηγορία | Speech recognition, Automatic | en |
| Θεματική Κατηγορία | automatic speech recognition | en |
| Θεματική Κατηγορία | mechanical speech recognizer | en |
| Θεματική Κατηγορία | speech recognition automatic | en |
| Βιβλιογραφική Αναφορά | G. Tsontzos, V. Diakoloukas, C. Koniaris and V. Digalakis, "Estimation of general identifiable linear dynamic models with an application in speech recognition," in 2007 IEEE Int. Conf. on Acoust., Speech and Sign. Process. (ICASSP) doi: 10.1109/ICASSP.2007.366947 | en |
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