Matěj Korvas


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Free English and Czech telephone speech corpus shared under the CC-BY-SA 3.0 license
Matěj Korvas | Ondřej Plátek | Ondřej Dušek | Lukáš Žilka | Filip Jurčíček
Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14)

We present a dataset of telephone conversations in English and Czech, developed for training acoustic models for automatic speech recognition (ASR) in spoken dialogue systems (SDSs). The data comprise 45 hours of speech in English and over 18 hours in Czech. Large part of the data, both audio and transcriptions, was collected using crowdsourcing, the rest are transcriptions by hired transcribers. We release the data together with scripts for data pre-processing and building acoustic models using the HTK and Kaldi ASR toolkits. We publish also the trained models described in this paper. The data are released under the CC-BY-SA~3.0 license, the scripts are licensed under Apache~2.0. In the paper, we report on the methodology of collecting the data, on the size and properties of the data, and on the scripts and their use. We verify the usability of the datasets by training and evaluating acoustic models using the presented data and scripts.


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Correspondence Seminar: Bringing Linguistics to High Schools
Matěj Korvas | Vojtěch Diatka
Proceedings of the Fourth Workshop on Teaching NLP and CL

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Comparison of Bayesian Discriminative and Generative Models for Dialogue State Tracking
Lukáš Žilka | David Marek | Matěj Korvas | Filip Jurčíček
Proceedings of the SIGDIAL 2013 Conference