Variable-order N-gram generation by word-class splitting and consecutive word grouping. - Hirokazu Masataki; Yoshinori Sagisaka (ICASSP, 1996)

Spontaneous dialogue speech recognition using cross-word context constrained word graphs. - Tohru Shimizu; Hirofumi Yamamoto; Hirokazu Masataki; Shoichi Matsunaga; Yoshinori Sagisaka (ICASSP, 1996)

Task adaptation using MAP estimation in N-gram language modeling. - Hirokazu Masataki; Yoshinori Sagisaka; Kazuya Hisaki; Tatsuya Kawahara (ICASSP, 1997)

Efficient data selection for speech recognition based on prior confidence estimation using speech and context independent models. - Satoshi Kobashikawa; Taichi Asami; Yoshikazu Yamaguchi; Hirokazu Masataki; Satoshi Takahashi (INTERSPEECH, 2010)

Detection of anger emotion in dialog speech using prosody feature and temporal relation of utterances. - Narichika Nomoto; Hirokazu Masataki; Osamu Yoshioka; Satoshi Takahashi (INTERSPEECH, 2010)

Improving hmm-based extractive summarization for multi-domain contact center dialogues. - Ryuichiro Higashinaka; Yasuhiro Minami; Hitoshi Nishikawa; Kohji Dohsaka; Toyomi Meguro; Satoshi Kobashikawa; Hirokazu Masataki; Osamu Yoshioka; Satoshi Takahashi; Gen-ichiro Kikui (SLT, 2010)

Efficient data selection for spoken document retrieval based on prior confidence estimation using speech and context independent models. - Satoshi Kobashikawa; Taichi Asami; Yoshikazu Yamaguchi; Hirokazu Masataki; Satoshi Takahashi (SLT, 2010)

Extracting call-reason segments from contact center dialogs by using automatically acquired boundary expressions. - Takaaki Fukutomi; Satoshi Kobashikawa; Taichi Asami; Tsubasa Shinozaki; Hirokazu Masataki; Satoshi Takahashi (ICASSP, 2011)

Spoken Document Confidence Estimation Using Contextual Coherence. - Taichi Asami; Narichika Nomoto; Satoshi Kobashikawa; Yoshikazu Yamaguchi; Hirokazu Masataki; Satoshi Takahashi (INTERSPEECH, 2011)

Morpheme Conversion for Connecting Speech Recognizer and Language Analyzers in Unsegmented Languages. - Kenji Imamura; Tomoko Izumi; Kugatsu Sadamitsu; Kuniko Saito; Satoshi Kobashikawa; Hirokazu Masataki (INTERSPEECH, 2011)

Anger Recognition in Spoken Dialog Using Linguistic and Para-Linguistic Information. - Narichika Nomoto; Masafumi Tamoto; Hirokazu Masataki; Osamu Yoshioka; Satoshi Takahashi (INTERSPEECH, 2011)

Speech Data Clustering Based on Phoneme Error Trend for Unsupervised Acoustic Model Adaptation. - Taichi Asami; Satoshi Kobashikawa; Hirokazu Masataki; Osamu Yoshioka; Satoshi Takahashi (INTERSPEECH, 2012)

Efficient Beam Width Control to Suppress Excessive Speech Recognition Computation Time Based on Prior Score Range Normalization. - Satoshi Kobashikawa; Takaaki Hori; Yoshikazu Yamaguchi; Taichi Asami; Hirokazu Masataki; Satoshi Takahashi (INTERSPEECH, 2012)

Automatic Vocabulary Adaptation Based on Semantic Similarity and Speech Recognition Confidence Measure. - Shoko Yamahata; Yoshikazu Yamaguchi; Atsunori Ogawa; Hirokazu Masataki; Osamu Yoshioka; Satoshi Takahashi (INTERSPEECH, 2012)

Efficient prior and incremental beam width control to suppress excessive speech recognition time based on score range estimation. - Satoshi Kobashikawa; Takaaki Hori; Yoshikazu Yamaguchi; Taichi Asami; Hirokazu Masataki; Satoshi Takahashi (SLT, 2012)

Use of latent words language models in ASR: A sampling-based implementation. - Ryo Masumura; Hirokazu Masataki; Takanobu Oba; Osamu Yoshioka; Satoshi Takahashi (ICASSP, 2013)

Unsupervised confidence calibration using examples of recognized words and their contexts. - Taichi Asami; Satoshi Kobashikawa; Hirokazu Masataki; Osamu Yoshioka; Satoshi Takahashi (INTERSPEECH, 2013)

Viterbi decoding for latent words language models using gibbs sampling. - Ryo Masumura; Hirokazu Masataki; Takanobu Oba; Osamu Yoshioka; Satoshi Takahashi (INTERSPEECH, 2013)

Unsupervised discriminative language modeling using error rate estimator. - Takanobu Oba; Atsunori Ogawa; Takaaki Hori; Hirokazu Masataki; Atsushi Nakamura (INTERSPEECH, 2013)

Fast unsupervised adaptation based on efficient statistics accumulation using frame independent confidence within monophone states. - Satoshi Kobashikawa; Atsunori Ogawa; Taichi Asami; Yoshikazu Yamaguchi; Hirokazu Masataki; Satoshi Takahashi (Comput. Speech Lang., 2013)

Role play dialogue topic model for language model adaptation in multi-party conversation speech recognition. - Ryo Masumura; Takanobu Oba; Hirokazu Masataki; Osamu Yoshioka; Satoshi Takahashi (ICASSP, 2014)

Read and spontaneous speech classification based on variance of GMM supervectors. - Taichi Asami; Ryo Masumura; Hirokazu Masataki; Sumitaka Sakauchi (INTERSPEECH, 2014)

Mixture of latent words language models for domain adaptation. - Ryo Masumura; Taichi Asami; Takanobu Oba; Hirokazu Masataki; Sumitaka Sakauchi (INTERSPEECH, 2014)

Efficient data selection for speech recognition based on prior confidence estimation using speech and monophone models. - Satoshi Kobashikawa; Taichi Asami; Yoshikazu Yamaguchi; Hirokazu Masataki; Satoshi Takahashi (Comput. Speech Lang., 2014)

Automatic Vocabulary Adaptation Based on Semantic and Acoustic Similarities. - Shoko Yamahata; Yoshikazu Yamaguchi; Atsunori Ogawa; Hirokazu Masataki; Osamu Yoshioka; Satoshi Takahashi (IEICE Trans. Inf. Syst., 2014)

Hierarchical Latent Words Language Models for Robust Modeling to Out-Of Domain Tasks. - Ryo Masumura; Taichi Asami; Takanobu Oba; Hirokazu Masataki; Sumitaka Sakauchi; Akinori Ito (EMNLP, 2015)

Agreement and disagreement utterance detection in conversational speech by extracting and integrating local features. - Atsushi Ando; Taichi Asami; Manabu Okamoto; Hirokazu Masataki; Sumitaka Sakauchi (INTERSPEECH, 2015)

Training data selection for acoustic modeling via submodular optimization of joint kullback-leibler divergence. - Taichi Asami; Ryo Masumura; Hirokazu Masataki; Manabu Okamoto; Sumitaka Sakauchi (INTERSPEECH, 2015)

Combinations of various language model technologies including data expansion and adaptation in spontaneous speech recognition. - Ryo Masumura; Taichi Asami; Takanobu Oba; Hirokazu Masataki; Sumitaka Sakauchi; Akinori Ito (INTERSPEECH, 2015)

Latent words recurrent neural network language models. - Ryo Masumura; Taichi Asami; Takanobu Oba; Hirokazu Masataki; Sumitaka Sakauchi; Akinori Ito (INTERSPEECH, 2015)

Language Identification Based on Generative Modeling of Posteriorgram Sequences Extracted from Frame-by-Frame DNNs and LSTM-RNNs. - Ryo Masumura; Taichi Asami; Hirokazu Masataki; Yushi Aono; Sumitaka Sakauchi (INTERSPEECH, 2016)

Investigation of Combining Various Major Language Model Technologies including Data Expansion and Adaptation. - Ryo Masumura; Taichi Asami; Takanobu Oba; Hirokazu Masataki; Sumitaka Sakauchi; Akinori Ito (IEICE Trans. Inf. Syst., 2016)

N-gram Approximation of Latent Words Language Models for Domain Robust Automatic Speech Recognition. - Ryo Masumura; Taichi Asami; Takanobu Oba; Hirokazu Masataki; Sumitaka Sakauchi; Satoshi Takahashi (IEICE Trans. Inf. Syst., 2016)

Joint unsupervised adaptation of n-gram and RNN language models via LDA-based hybrid mixture modeling. - Ryo Masumura; Taichi Asami; Hirokazu Masataki; Yushi Aono (APSIPA, 2017)

Domain adaptation of DNN acoustic models using knowledge distillation. - Taichi Asami; Ryo Masumura; Yoshikazu Yamaguchi; Hirokazu Masataki; Yushi Aono (ICASSP, 2017)

Parallel phonetically aware DNNs and LSTM-RNNS for frame-by-frame discriminative modeling of spoken language identification. - Ryo Masumura; Taichi Asami; Hirokazu Masataki; Yushi Aono (ICASSP, 2017)

Hyperspherical Query Likelihood Models with Word Embeddings. - Ryo Masumura; Taichi Asami; Hirokazu Masataki; Kugatsu Sadamitsu; Kyosuke Nishida; Ryuichiro Higashinaka (IJCNLP(2), 2017)

Online End-of-Turn Detection from Speech Based on Stacked Time-Asynchronous Sequential Networks. - Ryo Masumura; Taichi Asami; Hirokazu Masataki; Ryo Ishii; Ryuichiro Higashinaka (INTERSPEECH, 2017)

Multi-task and Multi-lingual Joint Learning of Neural Lexical Utterance Classification based on Partially-shared Modeling. - Ryo Masumura; Tomohiro Tanaka; Ryuichiro Higashinaka; Hirokazu Masataki; Yushi Aono (COLING, 2018)

Neural Confnet Classification: Fully Neural Network Based Spoken Utterance Classification Using Word Confusion Networks. - Ryo Masumura; Yusuke Ijima; Taichi Asami; Hirokazu Masataki; Ryuichiro Higashinaka (ICASSP, 2018)

Role Play Dialogue Aware Language Models Based on Conditional Hierarchical Recurrent Encoder-Decoder. - Ryo Masumura; Tomohiro Tanaka; Atsushi Ando; Hirokazu Masataki; Yushi Aono (INTERSPEECH, 2018)

Neural Error Corrective Language Models for Automatic Speech Recognition. - Tomohiro Tanaka; Ryo Masumura; Hirokazu Masataki; Yushi Aono (INTERSPEECH, 2018)

Domain Adaptation Based on Mixture of Latent Words Language Models for Automatic Speech Recognition. - Ryo Masumura; Taichi Asami; Takanobu Oba; Hirokazu Masataki; Sumitaka Sakauchi; Akinori Ito (IEICE Trans. Inf. Syst., 2018)

Viterbi Approximation of Latent Words Language Models for Automatic Speech Recognition. - Ryo Masumura; Taichi Asami; Takanobu Oba; Hirokazu Masataki; Sumitaka Sakauchi (J. Inf. Process., 2019)