Hirokazu Masataki

Publication Activity (10 Years)

Years Active: 1996-2019
Publications (10 Years): 19

Top Topics

Mixture Modeling

Speech Recognition

Top Venues

IEICE Trans. Inf. Syst.

Comput. Speech Lang.

Publications

Ryo Masumura, Taichi Asami, Takanobu Oba, Hirokazu Masataki, Sumitaka Sakauchi
Viterbi Approximation of Latent Words Language Models for Automatic Speech Recognition. J. Inf. Process. 27 (2019)
Ryo Masumura, Tomohiro Tanaka, Ryuichiro Higashinaka, Hirokazu Masataki, Yushi Aono
Multi-task and Multi-lingual Joint Learning of Neural Lexical Utterance Classification based on Partially-shared Modeling. COLING (2018)
Ryo Masumura, Tomohiro Tanaka, Atsushi Ando, Hirokazu Masataki, Yushi Aono
Role Play Dialogue Aware Language Models Based on Conditional Hierarchical Recurrent Encoder-Decoder. INTERSPEECH (2018)
Ryo Masumura, Yusuke Ijima, Taichi Asami, Hirokazu Masataki, Ryuichiro Higashinaka
Neural Confnet Classification: Fully Neural Network Based Spoken Utterance Classification Using Word Confusion Networks. ICASSP (2018)
Tomohiro Tanaka, Ryo Masumura, Hirokazu Masataki, Yushi Aono
Neural Error Corrective Language Models for Automatic Speech Recognition. INTERSPEECH (2018)
Ryo Masumura, Taichi Asami, Takanobu Oba, Hirokazu Masataki, Sumitaka Sakauchi, Akinori Ito
Domain Adaptation Based on Mixture of Latent Words Language Models for Automatic Speech Recognition. IEICE Trans. Inf. Syst. (6) (2018)
Taichi Asami, Ryo Masumura, Yoshikazu Yamaguchi, Hirokazu Masataki, Yushi Aono
Domain adaptation of DNN acoustic models using knowledge distillation. ICASSP (2017)
Ryo Masumura, Taichi Asami, Hirokazu Masataki, Yushi Aono
Joint unsupervised adaptation of n-gram and RNN language models via LDA-based hybrid mixture modeling. APSIPA (2017)
Ryo Masumura, Taichi Asami, Hirokazu Masataki, Yushi Aono
Parallel phonetically aware DNNs and LSTM-RNNS for frame-by-frame discriminative modeling of spoken language identification. ICASSP (2017)
Ryo Masumura, Taichi Asami, Hirokazu Masataki, Ryo Ishii, Ryuichiro Higashinaka
Online End-of-Turn Detection from Speech Based on Stacked Time-Asynchronous Sequential Networks. INTERSPEECH (2017)
Ryo Masumura, Taichi Asami, Hirokazu Masataki, Kugatsu Sadamitsu, Kyosuke Nishida, Ryuichiro Higashinaka
Hyperspherical Query Likelihood Models with Word Embeddings. IJCNLP(2) (2017)
Ryo Masumura, Taichi Asami, Hirokazu Masataki, Yushi Aono, Sumitaka Sakauchi
Language Identification Based on Generative Modeling of Posteriorgram Sequences Extracted from Frame-by-Frame DNNs and LSTM-RNNs. INTERSPEECH (2016)
Ryo Masumura, Taichi Asami, Takanobu Oba, Hirokazu Masataki, Sumitaka Sakauchi, Satoshi Takahashi
N-gram Approximation of Latent Words Language Models for Domain Robust Automatic Speech Recognition. IEICE Trans. Inf. Syst. (10) (2016)
Ryo Masumura, Taichi Asami, Takanobu Oba, Hirokazu Masataki, Sumitaka Sakauchi, Akinori Ito
Investigation of Combining Various Major Language Model Technologies including Data Expansion and Adaptation. IEICE Trans. Inf. Syst. (10) (2016)
Ryo Masumura, Taichi Asami, Takanobu Oba, Hirokazu Masataki, Sumitaka Sakauchi, Akinori Ito
Combinations of various language model technologies including data expansion and adaptation in spontaneous speech recognition. INTERSPEECH (2015)
Atsushi Ando, Taichi Asami, Manabu Okamoto, Hirokazu Masataki, Sumitaka Sakauchi
Agreement and disagreement utterance detection in conversational speech by extracting and integrating local features. INTERSPEECH (2015)
Ryo Masumura, Taichi Asami, Takanobu Oba, Hirokazu Masataki, Sumitaka Sakauchi, Akinori Ito
Hierarchical Latent Words Language Models for Robust Modeling to Out-Of Domain Tasks. EMNLP (2015)
Ryo Masumura, Taichi Asami, Takanobu Oba, Hirokazu Masataki, Sumitaka Sakauchi, Akinori Ito
Latent words recurrent neural network language models. INTERSPEECH (2015)
Taichi Asami, Ryo Masumura, Hirokazu Masataki, Manabu Okamoto, Sumitaka Sakauchi
Training data selection for acoustic modeling via submodular optimization of joint kullback-leibler divergence. INTERSPEECH (2015)
Ryo Masumura, Takanobu Oba, Hirokazu Masataki, Osamu Yoshioka, Satoshi Takahashi
Role play dialogue topic model for language model adaptation in multi-party conversation speech recognition. ICASSP (2014)
Taichi Asami, Ryo Masumura, Hirokazu Masataki, Sumitaka Sakauchi
Read and spontaneous speech classification based on variance of GMM supervectors. INTERSPEECH (2014)
Shoko Yamahata, Yoshikazu Yamaguchi, Atsunori Ogawa, Hirokazu Masataki, Osamu Yoshioka, Satoshi Takahashi
Automatic Vocabulary Adaptation Based on Semantic and Acoustic Similarities. IEICE Trans. Inf. Syst. (6) (2014)
Ryo Masumura, Taichi Asami, Takanobu Oba, Hirokazu Masataki, Sumitaka Sakauchi
Mixture of latent words language models for domain adaptation. INTERSPEECH (2014)
Satoshi Kobashikawa, Taichi Asami, Yoshikazu Yamaguchi, Hirokazu Masataki, Satoshi Takahashi
Efficient data selection for speech recognition based on prior confidence estimation using speech and monophone models. Comput. Speech Lang. 28 (6) (2014)
Takanobu Oba, Atsunori Ogawa, Takaaki Hori, Hirokazu Masataki, Atsushi Nakamura
Unsupervised discriminative language modeling using error rate estimator. INTERSPEECH (2013)
Satoshi Kobashikawa, Atsunori Ogawa, Taichi Asami, Yoshikazu Yamaguchi, Hirokazu Masataki, Satoshi Takahashi
Fast unsupervised adaptation based on efficient statistics accumulation using frame independent confidence within monophone states. Comput. Speech Lang. 27 (1) (2013)
Taichi Asami, Satoshi Kobashikawa, Hirokazu Masataki, Osamu Yoshioka, Satoshi Takahashi
Unsupervised confidence calibration using examples of recognized words and their contexts. INTERSPEECH (2013)
Ryo Masumura, Hirokazu Masataki, Takanobu Oba, Osamu Yoshioka, Satoshi Takahashi
Use of latent words language models in ASR: A sampling-based implementation. ICASSP (2013)
Ryo Masumura, Hirokazu Masataki, Takanobu Oba, Osamu Yoshioka, Satoshi Takahashi
Viterbi decoding for latent words language models using gibbs sampling. INTERSPEECH (2013)
Shoko Yamahata, Yoshikazu Yamaguchi, Atsunori Ogawa, Hirokazu Masataki, Osamu Yoshioka, Satoshi Takahashi
Automatic Vocabulary Adaptation Based on Semantic Similarity and Speech Recognition Confidence Measure. INTERSPEECH (2012)
Satoshi Kobashikawa, Takaaki Hori, Yoshikazu Yamaguchi, Taichi Asami, Hirokazu Masataki, Satoshi Takahashi
Efficient Beam Width Control to Suppress Excessive Speech Recognition Computation Time Based on Prior Score Range Normalization. INTERSPEECH (2012)
Taichi Asami, Satoshi Kobashikawa, Hirokazu Masataki, Osamu Yoshioka, Satoshi Takahashi
Speech Data Clustering Based on Phoneme Error Trend for Unsupervised Acoustic Model Adaptation. INTERSPEECH (2012)
Satoshi Kobashikawa, Takaaki Hori, Yoshikazu Yamaguchi, Taichi Asami, Hirokazu Masataki, Satoshi Takahashi
Efficient prior and incremental beam width control to suppress excessive speech recognition time based on score range estimation. SLT (2012)
Narichika Nomoto, Masafumi Tamoto, Hirokazu Masataki, Osamu Yoshioka, Satoshi Takahashi
Anger Recognition in Spoken Dialog Using Linguistic and Para-Linguistic Information. INTERSPEECH (2011)
Taichi Asami, Narichika Nomoto, Satoshi Kobashikawa, Yoshikazu Yamaguchi, Hirokazu Masataki, Satoshi Takahashi
Spoken Document Confidence Estimation Using Contextual Coherence. INTERSPEECH (2011)
Takaaki Fukutomi, Satoshi Kobashikawa, Taichi Asami, Tsubasa Shinozaki, Hirokazu Masataki, Satoshi Takahashi
Extracting call-reason segments from contact center dialogs by using automatically acquired boundary expressions. ICASSP (2011)
Kenji Imamura, Tomoko Izumi, Kugatsu Sadamitsu, Kuniko Saito, Satoshi Kobashikawa, Hirokazu Masataki
Morpheme Conversion for Connecting Speech Recognizer and Language Analyzers in Unsegmented Languages. INTERSPEECH (2011)
Narichika Nomoto, Hirokazu Masataki, Osamu Yoshioka, Satoshi Takahashi
Detection of anger emotion in dialog speech using prosody feature and temporal relation of utterances. INTERSPEECH (2010)
Ryuichiro Higashinaka, Yasuhiro Minami, Hitoshi Nishikawa, Kohji Dohsaka, Toyomi Meguro, Satoshi Kobashikawa, Hirokazu Masataki, Osamu Yoshioka, Satoshi Takahashi, Gen-ichiro Kikui
Improving hmm-based extractive summarization for multi-domain contact center dialogues. SLT (2010)
Satoshi Kobashikawa, Taichi Asami, Yoshikazu Yamaguchi, Hirokazu Masataki, Satoshi Takahashi
Efficient data selection for speech recognition based on prior confidence estimation using speech and context independent models. INTERSPEECH (2010)
Satoshi Kobashikawa, Taichi Asami, Yoshikazu Yamaguchi, Hirokazu Masataki, Satoshi Takahashi
Efficient data selection for spoken document retrieval based on prior confidence estimation using speech and context independent models. SLT (2010)
Hirokazu Masataki, Yoshinori Sagisaka, Kazuya Hisaki, Tatsuya Kawahara
Task adaptation using MAP estimation in N-gram language modeling. ICASSP (1997)
Hirokazu Masataki, Yoshinori Sagisaka
Variable-order N-gram generation by word-class splitting and consecutive word grouping. ICASSP (1996)
Tohru Shimizu, Hirofumi Yamamoto, Hirokazu Masataki, Shoichi Matsunaga, Yoshinori Sagisaka
Spontaneous dialogue speech recognition using cross-word context constrained word graphs. ICASSP (1996)