Vlasios Doumpiotis was born on June 28 in Larisa, Greece. In 1998,
he received the Bachelor of Science degree in Electronic and Computer
Engineering from the Technical University of Crete. He got admitted at the Johns Hopkins University in September 1998 for graduate studies. He received the
degree of Master of Science in Engineering(ECE) from the Johns Hopkins University
in Baltimore, Maryland in May 2000. Since then, he has been pursuing his
Ph.D in Electrical and Computer Engineering at the Center for Language and
Speech Processing at the Johns Hopkins University. His advisor is Professor William Byrne.
During the summers of 1999 and 2000 he worked at
Lernout & Hauspie(currently Scansoft) as a research scientist.
His research interests include large
vocabulary speech recognition focusing on acoustic modeling.
He successfully defended his PhD thesis on September 2004.
He is currently with Escription(Needham-MA).
(vlasios@escription.com)
Thesis
"Discriminative Training for Speaker Adaptation and Minimum Bayes Risk Estimation in Large Vocabulary Speech Recognition."
(pdf )
Conference Papers
V. Digalakis, V. Doumpiotis, S. Tsakalidis.
"On the integration of dialect and speaker adaptation in a multi-dialect speech recognition system," EUSIPCO, Rhodes, Greece, September 1998.
S. Tsakalidis, V. Doumpiotis and W. Byrne.
"Dicriminative Linear
Transforms for Feature Normalization and Speaker Adaptation in HMM
Estimation," ICSLP, Denver, 2002 (
ps )
V. Doumpiotis, S. Tsakalidis and W. Byrne.
"Discriminative Training for Segmental Minimum Bayes Risk Decoding," ICASSP,Hong Kong, 2003 (
pdf )
V. Doumpiotis, S. Tsakalidis and W. Byrne.
"Lattice Segmentation and Minimum Bayes Risk Discriminative Training," EUROSPEECH,Geneva, 2003
V. Doumpiotis, Y. Deng.
"EIGENSPACE-BASED MLLR WITH SPEAKER ADAPTIVE TRAINING IN LARGE VOCABULARY CONVERSATIONAL SPEECH RECOGNITION" ICASSP, Montreal, 2004
V. Doumpiotis and W. Byrne.
"Pinched Lattice Minimum Bayes Risk Discriminative Training for
Large Vocabulary Continuous Speech Recognition" Submitted to ICSLP04(
pdf )
NIST Evaluation Workshops
W.Byrne, V.Doumpiotis, S.Kumar, S.Tsakalidis, and V.Venkataramani,
``The JHU 2002 large vocabulary speech recognition system,''
in Proceedings of the NIST RT-02 Workshop. NIST, 2002,
Available at HREF="http://www.clsp.jhu.edu/research/rteval/".
Research Proposal: The Johns Hopkins University ECE Department August 2003
"Discriminative Training for Speaker Adaptation and Minimum Risk Estimation in Large Vocabulary Conversational Speech Recognition"
(ps )
Technical Reports
S. Tsakalidis, V. Doumpiotis and W. Byrne.
"Discriminative Linear
Transforms for Feature Normalization and Speaker Adaptation in HMM
Estimation," CLSP Technical Report, No.47 (
pdf )
Journal Papers
V. Doumpiotis and W. Byrne. Lattice segmentation and minimum Bayes risk discriminative training for large vocabulary continuous speech recognition. Speech Communication. Accepted, in revision.
S. Tsakalidis, V. Doumpiotis and W. Byrne.
"Discriminative Linear Transforms for Feature Normalization and Speaker Adaptation in HMM Estimation,"
IEEE Transactions on Speech and Audio Processing, 13(3), May 2005.
Honors and Awards:
December 1999-2001
Received award from the Greek Ministry of Education for outstanding academic
performance among graduate students.
January 1997
Received award among the 5 Best Students in Technical University of Crete
Electrical Computer Engineering Department.
March 1999
Award of Excellence in Telecommunications 1999 for my thesis by Ericsson Hellas
(speech recognition using normalization techniques VTLN).