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Electrical and Computer Enginnering Department
 
University of Patras
 

Iosif Mporas

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Post-Doc Researcher
Artificial Intelligence Group
Wire Communications Laboratory
Electrical and Computer Engineering Dept.
University of Patras

Contact Details

Tel: 
+30 2610 969808

Wire Communications Laboratory
Department of Electrical and Computer Engineering
University of Patras
GR - 26 504, Rion, Patras, Greece

About

Introduction: 

Dr. Iosif Mporas was born in Athens, Greece, in 1981. He received the Diploma degree in Electrical and Computer Engineering and the Ph.D. degree from the University of Patras, Greece, in 2004 and 2009, respectively. Currently he is post-doctoral researcher at the University of Patras and non-tenured Assistant Professor at the Technological Educational Institute of Western Greece. He is author and co-author in more than 50 publications in scientific journals and international conferences cited in more than 275 articles. His research interests include statistical signal modeling, speech and audio processing, natural language processing, pattern recognition, spoken and multimodal human-computer interaction, biosignal processing, e-health monitoring.

Qualifications: 
2009, Ph.D. Electrical and Computer Engineering University of Patras, Greece
2004, Dipl. Electrical and Computer Engineering University of Patras, Greece

Research

Research Interests: 
Statistical signal modelling
Speech and audio processing
Natural language processing
Spoken and multimodal HCI
Biosignal processing
E-Health monitoring
Publications: 
Publications in Journals:

Iosif Mporas, Todor Ganchev, Nikos Fakotakis, "Speech segmentation using regression fusion of boundary predictions", Computer Speech & Language, (in press), doi:10.1016/j.csl.2009.04.004.

Mihalis Siafarikas, Iosif Mporas, Todor Ganchev, Nikos Fakotakis, "Speech Recognition Using Wavelet Packet Features", Journal of Wavelet Theory and Applications, vol. 2, no. 1, 2008, pp. 41-59.
Iosif Mporas, Todor Ganchev, Mihalis Siafarikas, Nikos Fakotakis, "Comparison of Speech Features on the Speech Recognition Task", Journal of Computer Science 3(8): 608-616, 2007.
Panagiotis Zervas, Iosif Mporas, Nikos Fakotakis, George Kokkinakis "Evaluating intonational features for emotion recognition from speech", International Journal on Artificial Intelligence Tools, Vol. 16, Issue 6, pp.1001-1014, 2007.

Publications in Book Chapters:
 

Iosif Mporas, Todor Ganchev, Otilia Kocsis, Nikos Fakotakis, "Performance Evaluation of a Speech Interface for Motorcycle Environment", Artificial Intelligence Applications and Innovations III, Series: IFIP Advances in Information and Communication Technology, Vol. 296, Iliadis, Lazaros; Vlahavas, Ioannis; Bramer, Max (Eds.), pp. 259-266.
Otilia Kocsis, Todor Ganchev, Iosif Mporas, George Papadopoulos, Nikos Fakotakis, "PlayMancer: a multi-modal serious gaming platform", Artificial Intelligence Applications and Innovations III, Series: IFIP Advances in Information and Communication Technology, Vol. 296, Iliadis, Lazaros; Vlahavas, Ioannis; Bramer, Max (Eds.), pp. 441-447.
Iosif Mporas, Todor Ganchev, Nikos Fakotakis, "Phonotactic Recognition of Greek and Cypriot Dialects from Telephone Speech", SETN 2008, Advances in Artificial Intelligence, Lecture Notes in Computer Science, Springer Berlin / Heidelberg, Volume 5138/2008, pp. 173-181.
Theodoros Kostoulas, Iosif Mporas, Todor Ganchev, Nikos Katsaounos, Alexandros Lazaridis, Stavros Ntalampiras, Nikos Fakotakis, "LOGOS: A Multimodal Dialogue System for Controlling Smart Appliances", KES IIMSS 2008, New Directions in Intelligent Interactive Multimedia, Studies in Computational Intelligence (142), pp. 585-594.
Todor Ganchev, Alexandros Lazaridis, Iosif Mporas, Nikos Fakotakis, "Performance Evaluation for Voice Conversion Systems", Text, Speech and Dialogue 2008, Lecture Notes in Computer Science, Springer Berlin/ Heidelberg, pp. 317-324.
Theodoros Kostoulas, Iosif Mporas, Todor Ganchev and Nikos Fakotakis, "The Effect of Emotional Speech on a Smart Home Apllication", IEA/AIE, Lecture Notes in Computer Science, Springer Berlin/ Heidelberg, Volume 5027/2008, pp. 305-310.
Iosif Mporas, Dimitrios P. Lyras, Kyriakos N. Sgarbas and Nikos Fakotakis, "Detection of Dialogue Acts using Perplexity-based Word Clustering", Text, Speech and Dialogue, Lecture Notes in Computer Science, Springer Berlin/ Heidelberg, Volume 4629/2007, pp. 638-643.
Panagiotis Zervas, Iosif Mporas, Nikos Fakotakis, George Kokkinakis, "Employing Fujisaki's Intonation Model Parameters for Emotion Recognition", SETN 2006, Advances in Artificial Intelligence, Lecture Notes in Computer Science, Springer Berlin / Heidelberg, Volume 3955/2006, pp. 443-453.
Iosif Mporas, Todor Ganchev, Panagiotis Zervas, Nikos Fakotakis, "Recognition of Greek Phonemes using Support Vector Machines", SETN 2006, Advances in Artificial Intelligence, Lecture Notes in Computer Science, Springer Berlin/ Heidelberg, Volume 3955/2006, pp. 290-300.
Iosif Mporas, Panagiotis Zervas, Nikos Fakotakis, "Detecting Broad Phonemic Class Boundaries from Greek Speech in Noise Environments", Text, Speech and Dialogue, Lecture Notes in Computer Science, Springer Berlin/ Heidelberg, Volume 4188/2006, pp. 479-484.
Publications in Conferences:

Iosif Mporas, Todor Ganchev, Theodoros Kostoulas, Katia Kermanidis, Nikos Fakotakis, "Automatic Speech Recognition System for Home Appliances Control", In Proceedings of the 13th Pan-Hellenic Conference on Informatics, PCI 2009, Corfu, Greece, (accepted).

Iosif Mporas, Alexandros Lazaridis, Todor Ganchev, Nikos Fakotakis, "Using Hybrid HMM-based Speech Segmentation to improve Synthetic Speech Quality", In Proceedings of the 13th Pan-Hellenic Conference on Informatics, PCI 2009, Corfu, Greece, (accepted).
Iosif Mporas, Otilia Kocsis, Todor Ganchev, Nikos Fakotakis, "A collaborative speech enhancement approach for speech recognition in motorcycle environment", In Proceedings of the 16th International Conference on Digital Signal Processing, DSP 2009, Santorini, Greece, 5-7 July 2009 (accepted).
Iosif Mporas, Todor Ganchev, Nikos Fakotakis, "Greek - Cypriot Dialect Recognition based on Phone Recognition", In Proceedings of the 13th International Conference "SPEECH and COMPUTER", SPECOM 2009, Saint-Petersburg, Russia, 21-25 June, pp. 271-274, 2009.
Todor Ganchev, Alexandros Lazaridis, Iosif Mporas, Nikos Fakotakis, "Average Performance Loss Measure for Assessment of Voice Conversion Systems", In Proceedings of the 13th International Conference "SPEECH and COMPUTER", SPECOM 2009, Saint-Petersburg, Russia, 21-25 June, pp. 275-280, 2009.
Alexandros Lazaridis, Theodoros Kostoulas, Iosif Mporas, Todor Ganchev, Nikos Katsaounos,  Stavros Ntalampiras, Nikos Fakotakis, "Human Evaluation of the LOGOS Spoken Dialogue System", In Proceedings of the 1st International International Conference on Pervasive Technologies Related to Assistive Environments, PETRA 2008, Athens, Greece, 15-19 July, 2008.
Theodoros Kostoulas, Todor Ganchev, Iosif Mporas, Nikos Fakotakis, "A Real-World Emotional Speech Corpus for Modern Greek", In Proceedings of the 6th International Conference on Language Resources and Evaluation, LREC 2008, Marrakech (Morocco), 28-30 May, 2008.
Iosif Mporas, Todor Ganchev, Nikos Fakotakis, "A Hybrid Architecture for Automatic Segmentation of Speech Waveforms", In Proceedings of the 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2008, Las Vegas, USA, 30 March- 4 April, 2008, pp. 4457-4460.
Iosif Mporas, Todor Ganchev, Mihalis Siafarikas, Theodoros Kostoulas, "Comparative Evaluation of Speech Parameterizations for Speech Recognition", In Proceedings of the 19th IEEE International Conference on Tools with Artificial Intelligence, ICTAI 2007, Patras, Greece, 29-31 October, 2007, pp. 510-513.
Theodoros Kostoulas, Todor Ganchev, Iosif Mporas, Nikos Fakotakis, "Detection of Negative Emotional States in Real-World Scenario", In Proceedings of the 19th IEEE International Conference on Tools with Artificial Intelligence, ICTAI 2007, Patras, Greece, 29-31 October, 2007, pp. 502-509.
Iosif Mporas, Todor Ganchev, Elias Kotinas, and Nikos Fakotakis, "Examining the Influence of Speech Frame Size and Number of Cepstral Coefficients on the Speech Recognition Performance", In Proceedings of the 12th International Conference "SPEECH and COMPUTER", SPECOM 2007, Moscow, Russia, 15-18 October, 2007, pp. 134-139.
Iosif Mporas, Panagiotis Zervas, Nikos Fakotakis, "Automatic Segmentation of Greek Speech Signals to Broad Phonemic Classes", In Proceedings of the 5th International Symposium Communication Systems Networks and Digital Signal Processing, CSNDSP 2006, 19-21 July, 2006, Patras, Greece, pp. 301-304.
Iosif Mporas, Panagiotis Zervas, Nikos Fakotakis, "Evaluation of Implicit Broad Phonemic Segmentation of Speech Signals using Pitchmarks", In Proceedings of the 14th European Signal Processing Conference, EUSIPCO 2006, 4-8 September, 2006, Florence, Italy.
Iosif Mporas, Panagiotis Zervas, Nikos Fakotakis, "Speech Feature Selection for the task of Automatic Phoneme Classification", In Proceedings of the 3rd Conference "Acoustics", 18-19 September, 2006, Heraklion, Greece, pp. 83-90.
Theodoros Kostoulas, Iosif Mporas, Nikos Fakotakis, "Emotion Recognition in Noise Environments", In Proceedings of the 3rd Conference "Acoustics", 18-19 September, 2006, Heraklion, Greece, pp. 97-104.
Iosif Mporas, Panagiotis Zervas, Nikos Fakotakis, "Broad Phonemic Class Segmentation of Speech Signals in Noise Environment", In Proceedings of the 11th International Conference "SPEECH and COMPUTER", SPECOM 2006, 25-29 June, 2006, Saint-Petersburg, Russia, pp. 363-366.
Panagiotis Zervas, Iosif Mporas, Nikos Fakotakis, "Employing Intonational Events Parameterization for Emotion Recognition", In Proceedings of the 3rd International Conference "Speech Prosody", 2-5 May, Dresden, Germany, 2006.
Iosif Mporas, Nikos Fakotakis, "Least Squares Support Vector Machine based Phoneme Recognition", In Proceedings of the 10th International Conference "SPEECH and COMPUTER", SPECOM 2005, 17-19 October, 2005, Patras, Greece, pp. 377-380.

Technical Reports:

Todor Ganchev, Otilia Kocsis, Nikos Katsaounos, Iosif Mporas, Alexandros Lazaridis, Theodoros Kostoulas, Stavros Ntalampiras, Dimitrios Lyras, George Papadopoulos, Kyriakos Sgarbas, Nikos Fakotakis, "Natural Spoken Dialogue Interaction: Technology, Tools, Resources and Applications", System Demonstrations, 18th European Conference on Artificial Intelligence, ECAI 2008, July 2008, pp. 33-34.
Thomas Winkler, Todor Ganchev, Theodoros Kostoulas, Iosif Mporas, Alexandros Lazaridis, Stavros Ntalampiras, Atta Badii, Rick Adderley, Christian Bonkowski, "MoveOn Deliverable D.5: Report on Audio databases, Noise processing environment, ASR and TTS modules", December 2007.
 
Citations:

Iosif Mporas, Nikos Fakotakis, "Least Squares Support Vector Machine based Phoneme Recognition", In Proceedings of the 10th International Conference "SPEECH and COMPUTER", SPECOM 2005, 17-19 October, 2005, Patras, Greece, pp. 377-380.

Cited in:
M. Chandrasekar, M. Ponnavaikko, "Spoken TAMIL Character Recognition", Electronic Journal Technical Acoustics, 22, 2007.
Iosif Mporas, Todor Ganchev, Panagiotis Zervas, Nikos Fakotakis, "Recognition of Greek Phonemes using Support Vector Machines", Advances in Artificial Intelligence, Lecture Notes in Computer Science, Springer Berlin/ Heidelberg, Volume 3955/2006, pp. 290-300.
Cited in:
M. Chandrasekar, M. Ponnavaikko, "Spoken TAMIL Character Recognition", Electronic Journal Technical Acoustics, 22, 2007.
Panagiotis Zervas, Iosif Mporas, Nikos Fakotakis, George Kokkinakis, "Employing Fujisaki's Intonation Model Parameters for Emotion Recognition", Advances in Artificial Intelligence, Lecture Notes in Computer Science, Springer Berlin / Heidelberg, Volume 3955/2006, pp. 443-453.
Cited in:
D. Ververidis and C. Kotropoulos "Fast Sequential Floating Forward Selection applied to emotional speech features estimated on DES and SUSAS data collections", In Proceedings of the 14th European Signal Processing Conference, 4-8 September, 2006, Florence, Italy.
Iosif Mporas, Nikos Fakotakis, "Least Squares Support Vector Machine based Phoneme Recognition", In Proceedings of the 10th International Conference "SPEECH and COMPUTER", SPECOM 2005, 17-19 October, 2005, Patras, Greece, pp. 377-380.
Cited in:
Evdokia B. Gioura, "Development of a Multilingual Phone Recognition System for the Needs of Automatic Language Identification", Master Thesis, University of Patras, Greece, Nov, 2007. (in Greek).
Zervas, P., Mporas, I., Fakotakis, N., Kokkinakis, G.: Employing Fujisaki's Intonation Model Parameters for Emotion Recognition. In: Antoniou, G., Potamias, G., Spyropoulos, C., Plexousakis, D. (eds.) SETN 2006. LNCS (LNAI), vol. 3955, pp. 443-453. Springer, Heidelberg (2006).
Cited in:
Taner Danisman and Adil Alpkocak, "Emotion Classification of Audio Signals Using Ensemble of Support Vector Machines", Proceedings of 4th IEEE Tutorial and Research Workshop on Perception and Interactive Technologies for Speech-Based Systems, PIT 2008, Kloster Irsee, Germany, June 16-18, 2008, Lecture Notes in Computer Science, Springer Berlin / Heidelberg, pp. 205-216.
Iosif Mporas, Panagiotis Zervas, Nikos Fakotakis, "Evaluation of Implicit Broad Phonemic Segmentation of Speech Signals using Pitchmarks", In Proceedings of the 14th European Signal Processing Conference, EUSIPCO 2006, 4-8 September, 2006, Florence, Italy.
Cited in:
Almpanidis, G., Kotti, M., Kotropoulos, C., "Robust Detection of Phone Boundaries Using Model Selection Criteria With Few Observations", IEEE Transactions on Audio, Speech, and Language Processing, Vol. 17, No. 2, February 2009.
Iosif Mporas, Todor Ganchev, Panagiotis Zervas, Nikos Fakotakis, "Recognition of Greek Phonemes using Support Vector Machines", Advances in Artificial Intelligence, Lecture Notes in Computer Science, Springer Berlin/ Heidelberg, Volume 3955/2006, pp. 290-300.
Cited in:
Zhang, S., Zhao, Z., "Dimensionality reduction-based phoneme recognition", International Conference on Signal Processing Proceedings, ICSP 2008, pp. 667-670.
Panagiotis Zervas, Iosif Mporas, Nikos Fakotakis, George Kokkinakis "Evaluating intonational features for emotion recognition from speech", International Journal on Artificial Intelligence Tools, Vol. 16, Issue 6, pp.1001-1014, 2007.Cited in:
Potamitis I., Ganchev T., "Generalized recognition of sound events: Approaches and applications", Studies in Computational Intelligence 120, pp. 41-79.

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