V
Vassilios Digalakis
Researcher at Technical University of Crete
Publications - 77
Citations - 3834
Vassilios Digalakis is an academic researcher from Technical University of Crete. The author has contributed to research in topics: Hidden Markov model & Speaker recognition. The author has an hindex of 32, co-authored 75 publications receiving 3785 citations. Previous affiliations of Vassilios Digalakis include SRI International & University of Crete.
Papers
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From HMM's to segment models: a unified view of stochastic modeling for speech recognition
TL;DR: A general stochastic model is described that encompasses most of the models proposed in the literature for speech recognition, pointing out similarities in terms of correlation and parameter tying assumptions, and drawing analogies between segment models and HMMs.
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Speaker adaptation using constrained estimation of Gaussian mixtures
TL;DR: A constrained estimation technique for Gaussian mixture densities for speech recognition that approaches the speaker-independent accuracy achieved for native speakers and speaker-dependent systems that use six times as much training data.
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ML estimation of a stochastic linear system with the EM algorithm and its application to speech recognition
TL;DR: The nontraditional approach to the problem of estimating the parameters of a stochastic linear system is presented and it is shown how the evolution of the dynamics as a function of the segment length can be modeled using alternative assumptions.
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Genones: generalized mixture tying in continuous hidden Markov model-based speech recognizers
TL;DR: An algorithm is proposed that achieves a good tradeoff between modeling resolution and robustness by using a new, general scheme for tying of mixture components in continuous mixture-density hidden Markov model (HMM)-based speech recognizers.
Proceedings Article
Spoken language translation with MID-90's technology: a case study.
Manny Rayner,Ivan Bretan,David Carter,Michael Collins,Vassilios Digalakis,Björn Gambäck,Jaan Kaja,Jussi Karlgren,Bertil Lyberg,Stephen Pulman,Patti Price,Christer Samuelsson +11 more
TL;DR: The architecture of the Spoken Language Translator (SLT), a prototype speech translation system which can translate queries from spoken English to spoken Swedish in the domain of air travel information systems, is described.