Ing. Martin Karafiát, Ph.D.

2012Cumani, S., Plchot, O., Karafiát, M.: Independent Component Analysis and MLLR Transforms for Speaker Identification, In: Proc. International Conference on Acoustics, Speech, and Signal P, Kyoto, JP, IEEESP, 2012, p. 4365-4368, ISBN 978-1-4673-0044-5
 Hain, T., Burget, L., Dines, J., Garner, P., N., Grézl, F., El, H., A., Huijbregts, M., Karafiát, M., Lincoln, M., Wan, V.: Transcribing Meetings with the AMIDA System, In: IEEE Transactions on Audio, Speech, and Language Processing, Vol. 20, No. 2, 2012, US, p. 486-498, ISSN 1558-7916
 Karafiát, M., Janda, M., Černocký, J., Burget, L.: Region Dependent Linear Transforms in Multilingual Speech Recognition, In: Proc. International Conference on Acoustics, Speech, and Signal Processing 2012, Kyoto, JP, IEEESP, 2012, p. 4885-4888, ISBN 978-1-4673-0044-5
 Kombrink, S., Mikolov, T., Karafiát, M., Burget, L.: Improving Language Models for ASR Using Translated In-domain Data, In: Proceedings of 2012 IEEE International Conference on Acoustics, Speech and Signal Processing, Kyoto, JP, IEEESP, 2012, p. 4405-4408, ISBN 978-1-4673-0044-5
 Povey, D., Hannemann, M., Boulianne, G., Burget, L., Ghoshal, A., Janda, M., Karafiát, M., Kombrink, S., Motlíček, P., Qian, Y., Riedhammer, K., Veselý, K., Vu, N., T.: Generating Exact Lattices in The WFST Framework, In: Proceedings of 2012 IEEE International Conference on Acoustics, Speech and Signal Processing, Kyoto, JP, IEEESP, 2012, p. 4213-4216, ISBN 978-1-4673-0044-5
2011Deoras, A., Mikolov, T., Kombrink, S., Karafiát, M., Khudanpur, S.: Variational Approximation of Long-span Language Models for LVCSR, In: Proceedings of the 2011 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011, Praha, CZ, IEEESP, 2011, p. 5532-5535, ISBN 978-1-4577-0537-3
 Glembek, O., Burget, L., Kenny, P., Karafiát, M., Matějka, P.: Simplification and optimization of I-Vector Extraction, In: Proceedings of the 2011 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011, Praha, CZ, IEEESP, 2011, p. 4516-4519, ISBN 978-1-4577-0537-3
 Grézl, F., Karafiát, M., Janda, M.: Study of Probabilistic and Bottle-Neck Features in Multilingual Environment, In: Proceedings of ASRU 2011, Hilton Waikoloa Village, Big Island, Hawaii, US, IEEESP, 2011, p. 359-364, ISBN 978-1-4673-0366-8
 Grézl, F., Karafiát, M.: Integrating recent MLP feature extraction techniques into TRAP architecture, In: Proceedings of Interspeech 2011, Florence, IT, ISCA, 2011, p. 1229-1232, ISBN 978-1-61839-270-1, ISSN 1990-9772
 Karafiát, M., Burget, L., Matějka, P., Glembek, O., Černocký, J.: iVector-Based Discriminative Adaptation for Automatic Speech Recognition, In: Proceedings of ASRU 2011, Hilton Waikoloa Village, Big Island, Hawaii, US, IEEESP, 2011, p. 152-157, ISBN 978-1-4673-0366-8
 Kombrink, S., Mikolov, T., Karafiát, M., Burget, L.: Recurrent Neural Network based Language Modeling in Meeting Recognition, In: Proceedings of Interspeech 2011, Florence, IT, ISCA, 2011, p. 2877-2880, ISBN 978-1-61839-270-1, ISSN 1990-9772
 Povey, D., Burget, L., Agarwal, M., Akyazi, P., Ghoshal, A., Glembek, O., Goel, N., K., Karafiát, M., Rastrow, A., Rose, R., Schwarz, P., Thomas, S. et al: The subspace Gaussian mixture model-A structured model for speech recognition, In: Computer Speech and Language, Vol. 25, No. 2, 2011, Amsterdam, NL, p. 404-439, ISSN 0885-2308
 Povey, D., Karafiát, M., Ghoshal, A., Schwarz, P.: A Symmetrization of the Subspace Gaussian Mixture Model, In: Proceedings of 2011 IEEE International Conference on Acoustics, Speech, and Signal Processing, Praha, CZ, IEEESP, 2011, p. 4504-4507, ISBN 978-1-4577-0537-3
 Veselý, K., Karafiát, M., Grézl, F.: Convolutive Bottleneck Network Features for LVCSR, In: Proceedings of ASRU 2011, Big Island, Hawaii, US, IEEESP, 2011, p. 42-47, ISBN 978-1-4673-0366-8
2010Brummer, N., Burget, L., Kenny, P., Matějka, P., de, V., E., Karafiát, M., Kockmann, M., Glembek, O., Plchot, O., Baum, D., Senoussauoi, M.: ABC System description for NIST SRE 2010, In: Proc. NIST 2010 Speaker Recognition Evaluation, Brno, CZ, NIST, 2010, p. 1-20
 Burget, L., Schwarz, P., Agarwal, M., Akyazi, P., Feng, K., Ghoshal, A., Glembek, O., Goel, N., K., Karafiát, M., Povey, D., Rastrow, A., Rose, R., Thomas, S.: Multilingual acoustic modeling for speech recognition based on Subspace Gaussian Mixture Models, In: Proc. International Conference on Acoustictics, Speech, and Signal Processing, Dallas, US, IEEESP, 2010, p. 4334-4337, ISBN 978-1-4244-4296-6, ISSN 1520-6149
 Ghoshal, A., Povey, D., Agarwal, M., Akyazi, P., Burget, L., Feng, K., Glembek, O., Goel, N., K., Karafiát, M., Rastrow, A., Rose, R., Schwarz, P., Thomas, S.: A novel estimation of feature-space MLLR for full_covariance models, In: Proc. International Conference on Acoustics, Speech, and Signal Processing, Dallas, US, IEEESP, 2010, p. 4310-4313, ISBN 978-1-4244-4296-6, ISSN 1520-6149
 Goel, N., K., Thomas, S., Agarwal, M., Akyazi, P., Burget, L., Feng, K., Ghoshal, A., Glembek, O., Karafiát, M., Povey, D., Rastrow, A., Rose, R., Schwarz, P.: Approaches to automatic lexicon learning with limited training examples, In: Proc. International Conference on Acoustics, Speech, and Signal Processing, Dallas, US, IEEESP, 2010, p. 5094-5097, ISBN 978-1-4244-4296-6, ISSN 1520-6149
 Grézl, F., Karafiát, M.: Hierarchical Neural Net Architectures for Feature Extraction in ASR, In: Proceedings of the 11th Annual Conference of the International Speech Communication Association (INTERSPEECH 2010), Makuhari, Chiba, JP, ISCA, 2010, p. 1201-1204, ISSN 1990-9772
 Hain, T., Burget, L., Dines, J., Garner, P., N., El, H., A., Huijbregts, M., Karafiát, M., Lincoln, M., Wan, V.: The AMIDA 2009 Meeting Transcription System, In: Proceedings of the 11th Annual Conference of the International Speech Communication Association (INTERSPEECH 2010), Makuhari, Chiba, JP, ISCA, 2010, p. 358-361, ISSN 1990-9772
 Hannemann, M., Kombrink, S., Karafiát, M., Burget, L.: Similarity Scoring for Recognizing Repeated Out-of-VocabularyWords, In: Proceedings of the 11th Annual Conference of the International Speech Communication Association (INTERSPEECH 2010), Makuhari, Chiba, JP, ISCA, 2010, p. 897-900, ISSN 1990-9772
 Jančík, Z., Plchot, O., Brummer, N., Burget, L., Glembek, O., Hubeika, V., Karafiát, M., Matějka, P., Mikolov, T., Strasheim, A., Černocký, J.: Data selection and calibration issues in automatic language recognition - investigation with BUT-AGNITIO NIST LRE 2009 system, In: Proc. Odyssey 2010 - The Speaker and Language Recognition Workshop, Brno, CZ, ISCA, 2010, p. 215-221, ISBN 978-80-214-4114-9
 Karafiát, M., Szőke, I., Černocký, J.: Using Gradient Descent Optimization for Acoustics Training from Heterogeneous Data, In: Proc. Text, Speech and Dialog 2010, Brno, CZ, Springer, 2010, p. 322-329, ISBN 978-3-642-15759-2, ISSN 0302-9743
 Mikolov, T., Karafiát, M., Burget, L., Černocký, J., Khudanpur, S.: Recurrent neural network based language model, In: Proceedings of the 11th Annual Conference of the International Speech Communication Association (INTERSPEECH 2010), Makuhari, Chiba, JP, ISCA, 2010, p. 1045-1048, ISSN 1990-9772
 Povey, D., Burget, L., Agarwal, M., Akyazi, P., Feng, K., Ghoshal, A., Glembek, O., Goel, N., K., Karafiát, M., Rastrow, A., Rose, R., Schwarz, P., Thomas, S.: Subspace Gaussian mixture models for speech recognition, In: Proc. International Conference on Acoustics, Speech, and Signal Processing, Dallas, US, IEEESP, 2010, p. 4330-4333, ISBN 978-1-4244-4296-6, ISSN 1520-6149
 Rose, R., Norouzian, A., Reddy, A., Coy, A., Gupta, V., Karafiát, M.: Subword-based spoken term detection in audio course lectures, In: Proc. International Conference on Acoustics, Speech, and Signal Processing, Dallas, US, IEEESP, 2010, p. 5282-5285, ISBN 978-1-4244-4296-6, ISSN 1520-6149
2009Brümmer, N., Burget, L., Glembek, O., Hubeika, V., Jančík, Z., Karafiát, M., Matějka, P., Mikolov, T., Plchot, O., Strasheim, A.: BUT-AGNITIO System Description for NIST Language Recognition Evaluation 2009, In: Proceedings NIST 2009 Language Recognition Evaluation Workshop, Baltimore, Maryland, USA, US, NIST, 2009, p. 1-7
 Burget, L., Fapąo, M., Hubeika, V., Glembek, O., Karafiát, M., Kockmann, M., Matějka, P., Schwarz, P., Černocký, J.: BUT system for NIST 2008 speaker recognition evaluation, In: Proc. Interspeech 2009, Brighton, GB, ISCA, 2009, p. 2335-2338, ISSN 1990-9772
 Garner, P., N., Dines, J., Hain, T., El, H., A., Karafiát, M., Korchagin, D., Lincoln, M., Wan, V., Zhang, L.: Real-Time ASR from Meetings, In: Proc. Interspeech 2009, Brighton, GB, ISCA, 2009, p. 2119-2122, ISSN 1990-9772
 Grézl, F., Karafiát, M., Burget, L.: Investigation into bottle-neck features for meeting speech recognition, In: Proc. Interspeech 2009, Brighton, GB, ISCA, 2009, p. 2947-2950, ISSN 1990-9772
 Karafiát, M.: Study of linear transformations applied to training of cross-domain adapted large vocabulary continuous speech recognition systems, Brno, CZ, 2009, p. 73
 Kombrink, S., Burget, L., Matějka, P., Karafiát, M., Heřmanský, H.: Posterior-based Out of Vocabulary Word Detection in Telephone Speech, In: Proc. Interspeech 2009, Brighton, GB, ISCA, 2009, p. 80-83, ISSN 1990-9772
2008Burget, L., Fapąo, M., Hubeika, V., Glembek, O., Karafiát, M., Kockmann, M., Matějka, P., Schwarz, P., Černocký, J.: Brno University Of Technology - NIST 2008 SRE, Montreal, CA, 2008, p. 1-28
 Burget, L., Fapąo, M., Hubeika, V., Glembek, O., Karafiát, M., Kockmann, M., Matějka, P., Schwarz, P., Černocký, J.: BUT system description: NIST SRE 2008, In: Proc. 2008 NIST Speaker Recognition Evaluation Workshop, Montreal, CA, NIST, 2008, p. 1-4
 Karafiát, M., Burget, L., Hain, T., Černocký, J.: Discrimininative training of narrow band - wide band adaptated systems for meeting recognition, In: Proc. Interspeech 2008, Brisbane, AU, ISCA, 2008, p. 4, ISSN 1990-9772
 Kopecký, J., Glembek, O., Karafiát, M.: Advances in Acoustic Modeling for the Recognition of Czech, In: Proc. 11th International Conference on Text, Speech and Dialogue, Berlin, DE, Springer, 2008, p. 357-363, ISBN 978-3-540-87390-7
2007Brümmer, N., Burget, L., Černocký, J., Glembek, O., Grézl, F., Karafiát, M., van, L., D., Matějka, P., Schwarz, P., Strasheim, A.: Fusion of heterogeneous speaker recognition systems in the STBU submission for the NIST speaker recognition evaluation 2006, In: IEEE Transactions on Audio, Speech, and Language Processing, Vol. 15, No. 7, 2007, US, p. 2072-2084, ISSN 1558-7916
 Černocký, J., Burget, L., Schwarz, P., Matějka, P., Karafiát, M., Glembek, O., Kopecký, J., Szőke, I., Fapąo, M., Grézl, F., Hubeika, V., Oparin, I.: Search in speech, language identification and speaker recognition in Speech@FIT, In: Proc. 17th International Conference Radioelektronika, 2007, Brno, CZ, UREL FEKT VUT, 2007, p. 1-6, ISBN 978-80-214-3390-8
 Černocký, J., Szőke, I., Fapąo, M., Karafiát, M., Burget, L., Kopecký, J., Grézl, F., Schwarz, P., Glembek, O., Oparin, I., Smrľ, P., Matějka, P.: Search in speech for public security and defense, In: Proc. IEEE Workshop on Signal Processing Applications for Public Security and Forensics, 2007 (SAFE '07), Washington D.C., US, IEEESP, 2007, p. 1-7, ISBN 1-4244-1226-9
 Grézl, F., Karafiát, M., Černocký, J.: Neural network topologies and bottle neck features in speech recognition, Brno, CZ, 2007, p. 5
 Grézl, F., Karafiát, M., Kontár, S., Černocký, J.: Probabilistic and bottle-neck features for LVCSR of meetings, In: Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2007), Hononulu, US, IEEESP, 2007, p. 757-760, ISBN 1-4244-0728-1
 Hain, T., Wan, V., Burget, L., Karafiát, M., Dines, J., Vepa, J., Garau, G., Lincoln, M.: The AMI System for the Transcription of Speech in Meetings, In: Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2007), Hononulu, US, IEEESP, 2007, p. 357-360, ISBN 1-4244-0728-1
 Karafiát, M., Burget, L., Černocký, J., Hain, T.: Real-Time ASR from Meetings, In: Proc. INTERSPEECH 2007, Antwerpen, BE, ISCA, 2007, p. 4, ISSN 1990-9772
 Matějka, P., Burget, L., Schwarz, P., Glembek, O., Karafiát, M., Grézl, F., Černocký, J., van, L., D., Brümmer, N., Strasheim, A.: STBU system for the NIST 2006 speaker recognition evaluation, In: Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2007), Honolulu, US, IEEESP, 2007, p. 221-224, ISBN 1-4244-0728-1
 Mikolov, T., Oparin, I., Glembek, O., Burget, L., Karafiát, M., Černocký, J.: Pouľití mluvených korpusů ve vývoji systému pro rozpoznávání českých přednáąek, Praha, CZ, UK, 2007, p. 1-5
 Szőke, I., Burget, L., Karafiát, M.: Combination of Word and Phoneme Approach for Spoken Term Detection, Brno, CZ, 2007, p. 1-1
 Szőke, I., Fapąo, M., Karafiát, M., Burget, L., Grézl, F., Schwarz, P., Glembek, O., Matějka, P., Kopecký, J., Černocký, J.: Spoken Term Detection System Based on a Combination of LVCSR and Phonetic Search, Brno, CZ, 2007, p. 1-1
2006Burget, L., Černocký, J., Fapąo, M., Karafiát, M., Matějka, P., Schwarz, P., Smrľ, P., Szőke, I.: Indexing and search methods for spoken documents, In: Proceedings of the Ninth International Conference on Text, Speech and Dialogue, TSD 2006, Berlin, DE, Springer, 2006, p. 351-358, ISSN 0302-9743
 Fapąo, M., Schwarz, P., Szőke, I., Smrľ, P., Schwarz, M., Černocký, J., Karafiát, M., Burget, L.: Search Engine for Information Retrieval from Speech Records, In: Proceedings of the Third International Seminar on Computer Treatment of Slavic and East European Languages, Bratislava, SK, 2006, p. 100-101
 Fapąo, M., Smrľ, P., Schwarz, P., Szőke, I., Schwarz, M., Černocký, J., Karafiát, M., Burget, L.: Information Retrieval from Spoken Documents, In: Proceedings of the Seventh International Conference on Intelligent Text Processing and Computational Linguistics (CICLING 2006), Mexico City, MX, Springer, 2006, p. 410-416, ISBN 3-540-32205-1
 Glembek, O., Karafiát, M., Burget, L., Černocký, J.: Czech Speech Recognizer for Multiple Environments, In: Radioeletronika 2006, Bratislava, SK, 2006, p. 1-4
 Hain, T., Burget, L., Dines, J., Garau, G., Karafiát, M., Lincoln, M., Wan, V.: The AMI Meeting Transcription System, In: Proc. NIST Rich Transcription 2006 Spring Meeting Recognition Evaluation Worskhop, Washington D.C., US, NIST, 2006, p. 12
 Karafiát, M., Grézl, F., Schwarz, P., Burget, L., Černocký, J.: Robust heteroscedastic linear discriminant analysis and LCRC posterior features in large vocabulary continuous speech recognition, In: Proc. Fifth Slovenian and First International Language Technologies Conference, Ljubljana, SI, 2006, p. 1-4
 Karafiát, M., Grézl, F., Schwarz, P., Burget, L., Černocký, J.: Robust heteroscedastic linear discriminant analysis and LCRC posterior features in meeting data recognition, In: Proc. 3nd Joint Workshop on Multimodal Interaction and Related Machine Learning Algorithms (MLMI 2006), Berlin, DE, Springer, 2006, p. 275-284, ISBN 3-540-69267-3
 Kopecký, J., Szőke, I., Fapąo, M., Karafiát, M., Burget, L., Oparin, I., Schwarz, P., Matějka, P., Černocký, J., Glembek, O.: BUT System for NIST STD 2006 - Arabic, In: Proc. NIST SPoken Term Detection Evaluation workshop (STD 2006), Washington D.C., US, NIST, 2006, p. 15
 Szőke, I., Fapąo, M., Karafiát, M., Burget, L., Grézl, F., Schwarz, P., Glembek, O., Matějka, P., Kontár, S., Černocký, J.: BUT System for NIST STD 2006 - English, In: Proc. NIST SPoken Term Detection Evaluation workshop (STD 2006), Washington D.C., US, NIST, 2006, p. 26
2005Fapąo, M., Schwarz, P., Szőke, I., Černocký, J., Smrľ, P., Burget, L., Karafiát, M.: Search Engine for Information Retrieval from Multi-modal Records, Edinburgh, GB, 2005, p. 1
 Fapąo, M., Smrľ, P., Schwarz, P., Szőke, I., Burget, L., Karafiát, M., Černocký, J.: Systém pre efektívne vyhµadávanie v rečových databázach, In: Sborník databázové konference DATAKON 2005, Brno, CZ, MUNI, 2005, p. 323-333, ISBN 80-210-3813-6
 Hain, T., Burget, L., Dines, J., Garau, G., Karafiát, M., Lincoln, M., McCowan, I., Moore, D., Wan, V., Ordelman, R., Renals, S.: The 2005 AMI System for the Transcription of Speech in Meetings, In: Machine Learning for Multimodal Interaction, Second International Workshop, MLMI 2005, Edinburgh, UK, July 11-13, 2005, Revised Selected Papers, Edinburgh, GB, UEDIN, 2005, p. 450-462, ISBN 978-3-540-32549-9
 Hain, T., Karafiát, M., Dines, J., McCowan, I., Lincoln, M., Garau, G., Wan, V., Ordelman, R., Renals, S.: The Development of the AMI System for the Transcription of Speech in Meetings, In: Machine Learning for Multimodal Interaction, Second International Workshop, MLMI 2005, Edinburgh, UK, July 11-13, 2005, Revised Selected Papers, Edinburgh, GB, UEDIN, 2005, p. 344-356, ISBN 978-3-540-32549-9
 Hain, T., Karafiát, M., Garau, G., Moore, D., Wan, V., Ordelman, R., Renals, S.: Transcription of Conference Room Meetings: an Investigation, In: Interspeech'2005 - Eurospeech - 9th European Conference on Speech Communication and Technology, Lisabon, PT, ISCA, 2005, p. 4, ISSN 1018-4074
 Karafiát, M., Burget, L., Černocký, J.: Using Smoothed Heteroscedastic Linear Discriminant Analysis in Large Vocabulary Continuous Speech Recognition System, In: 2nd Joint Workshop on Multimodal Interaction and Related Machine Learning Algorithms, Edinbourgh, Scotland, GB, UEDIN, 2005, p. 8
 Szőke, I., Schwarz, P., Burget, L., Fapąo, M., Karafiát, M., Černocký, J., Matějka, P.: Comparison of Keyword Spotting Approaches for Informal Continuous Speech, In: Interspeech'2005 - Eurospeech - 9th European Conference on Speech Communication and Technology, Lisabon, PT, 2005, p. 633-636, ISSN 1018-4074
 Szőke, I., Schwarz, P., Burget, L., Karafiát, M., Černocký, J.: Phoneme based acoustics keyword spotting in informal continuous speech, In: Radioelektronika 2005, Brno, CZ, FEKT VUT, 2005, p. 195-198, ISBN 80-214-2904-6
 Szőke, I., Schwarz, P., Burget, L., Karafiát, M., Matějka, P., Černocký, J.: Phoneme Based Acoustics Keyword Spotting in Informal Continuous Speech, In: Lecture Notes in Computer Science, Vol. 2005, No. 3658, DE, p. 8, ISSN 0302-9743
 Szőke, I., Schwarz, P., Matějka, P., Burget, L., Fapąo, M., Karafiát, M., Černocký, J.: Comparison of Keyword Spotting Approaches for Informal Continuous Speech, In: 2nd Joint Workshop on Multimodal Interaction and Related Machine Learning Algorithms, Edinburgh, GB, 2005, p. 12
2004Karafiát, M., Grézl, F., Burget, L.: Combination of MFCC and TRAP features for LVCSR of meeting data, Martigny, CH, 2004, p. 1
 Karafiát, M., Grézl, F., Černocký, J.: TRAP based features for LVCSR of meeting data, In: Proc. 8th International Conference on Spoken Language Processing, Jeju Island, KR, Sunjin, 2004, p. 437-440, ISSN 1225-4111

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