A word recognition method from a classified phoneme string in the Lithan speech understanding system. - Sei-ichi Nakagawa; Toshiyuki Sakai (ICASSP, 1978)

A Parallel Tree Search Method. - Sei-ichi Nakagawa; Toshiyuki Sakai (IJCAI, 1979)

A connected spoken word recognition method by O(n) dynamic programming pattern matching algorithm. - Sei-ichi Nakagawa (ICASSP, 1983)

A Recognition Method of Connected Spoken Words With Syntactical Constraints by Augmented Continuous DP Algorithm. - Sei-ichi Nakagawa (IJCAI, 1983)

Connected spoken word recognition algorithms by constant time delay DP, O(n) DP and augmented continuous DP matching. - Sei-ichi Nakagawa (Inf. Sci., 1984)

A connected spoken word recognition algorithm by augmented continuous DP matching. - Seiichi Nakagawa (Syst. Comput. Jpn., 1985)

On quick word spotting techniques. - Sei-ichi Nakagawa; Alexander G. Hauptmann; Masaru Tomita (ICASSP, 1986)

Syllable-based connected spoken word recognition by two pass O(n) DP matching and hidden Markov models. - Sei-ichi Nakagawa; Mohammed M. Jilan (ICASSP, 1986)

Spoken sentence recognition by time-synchronous parsing algorithm of context-free grammar. - Sei-ichi Nakagawa (ICASSP, 1987)

Speaker-independent word recognition by less cost and stochastic dynamic time warping method. - Hirobumi Nakanishi; Seiichi Nakagawa (ECST, 1987)

A method for continuous speech segmentation using HMM. - Seiichi Nakagawa; Yasuhide Hashimoto (ICPR, 1988)

A lOObit/s speech coding using a speech recognition technique. - Yoshimitsu Hirata; Seiichi Nakagawa (EUROSPEECH, 1989)

The syntax-oriented speech understanding system - SPOJUS-SYNO. - Seiichi Nakagawa; Yoshihisa Ohguro; Yasuhide Hashimoto (EUROSPEECH, 1989)

Comparison among time-delay neural networks, LVQ2 discrete parameter HMM and continuous parameter HMM. - Seiichi Nakagawa; Yoshimitsu Hirata (ICASSP, 1990)

Speaker adaptation of continuous parameter HMM. - Yoshimitsu Hirata; Seiichi Nakagawa (ICSLP, 1990)

Sentence recognition method using word cooccurrence probability and its evaluation. - Isao Murase; Seiichi Nakagawa (ICSLP, 1990)

Diction for phoneme/syllable/word-category and identification of language using HMM. - Yoshio Ueda; Seiichi Nakagawa (ICSLP, 1990)

Segmentation of continuous speech by HMM and bayesian probability. - Seiichi Nakagawa; Yasuhide Hashimoto (Syst. Comput. Jpn., 1990)

The syntax-oriented spoken Japanese understanding system SPOJOS-SYNO II. - Seiichi Nakagawa; Yoshimitsu Hirata; Isao Murase (EUROSPEECH, 1991)

Relationship among phoneme/word recognition rate, perplexity and sentence recognition and comparison of language models. - Seiichi Nakagawa; Isao Murase (ICASSP, 1992)

A frame-synchronous continuous speech recognition algorithm using a top-down parsing of context-free grammar. - Atsuhiko Kai; Seiichi Nakagawa (ICSLP, 1992)

Speaker-independent, text-independent language identification by HMM. - Seiichi Nakagawa; Yoshio Ueda; Takashi Seino (ICSLP, 1992)

Speech recognition using various sequential networks. - Seiichi Nakagawa; Isao Hayakawa (Syst. Comput. Jpn., 1992)

A new speech recognition method based on VQ-distortion measure and HMM. - Seiichi Nakagawa; Hideyuki Suzuki (ICASSP (2), 1993)

Evaluation of VQ-distortion based HMM. - Seiichi Nakagawa; Hideyuki Suzuki; Li Zhao (EUROSPEECH, 1993)

Spoken language identification using ergodic HMM with emphasized state transition. - Takashi Seino; Seiichi Nakagawa (EUROSPEECH, 1993)

Evaluation of unknown word processing in a spoken word recognition system. - Atsuhiko Kai; Seiichi Nakagawa (ICSLP, 1994)

Concept and grammar acquisition based on combining with visual and auditory information. - Mikio Masukata; Seiichi Nakagawa (ICSLP, 1994)

Three language identification methods based on HMMs. - Allan A. Reyes; Takashi Seino; Seiichi Nakagawa (ICSLP, 1994)

An unsupervised speaker adaptation method for continuous parameter HMM by maximum a posteriori probability estimation. - Yutaka Tsurumi; Seiichi Nakagawa (ICSLP, 1994)

A comparison study of output probability functions in HMMs through spoken digit recognition. - Li Zhao; Hideyuki Suzuki; Seiichi Nakagawa (ICSLP, 1994)

A context-free grammar-driven, one-pass HMM-based continuous speech recognition method. - Seiichi Nakagawa; Atsuhiko Kai (Syst. Comput. Jpn., 1994)

Estimation of the probability density function and a posteriori probability by neural networks, and applications to vowel recognition. - Seiichi Nakagawa; Yoshiyuki Ono (Syst. Comput. Jpn., 1994)

Investigation on unknown word processing and strategies for spontaneous speech understanding. - Atsuhiko Kai; Seiichi Nakagawa (EUROSPEECH, 1995)

Comparative evaluation of segmental unit input HMM and conditional density HMM. - Kazumasa Yamamoto; Seiichi Nakagawa (EUROSPEECH, 1995)

Relationship among Recognition Rate, Rejection Rate and False Alarm Rate in a Spoken Word Recognition System. - Atsuhiko Kai; Seiichi Nakagawa (IEICE Trans. Inf. Syst., 1995)

A Comparative Study of Output Probability Functions in HMMs. - Seiichi Nakagawa; Li Zhao; Hideyuki Suzuki (IEICE Trans. Inf. Syst., 1995)

Evaluation of segmental unit input HMM. - Seiichi Nakagawa; Kazumasa Yamamoto (ICASSP, 1996)

Frame level likelihood normalization for text-independent speaker identification using Gaussian mixture models. - Konstantin P. Markov; Seiichi Nakagawa (ICSLP, 1996)

Automatic detection of accent nuclei at the head of words for speech recognition. - Nobuaki Minematsu; Seiichi Nakagawa (ICSLP, 1996)

Prosodic manipulation system of speech material for perceptual experiments. - Nobuaki Minematsu; Seiichi Nakagawa; Keikichi Hirose (ICSLP, 1996)

A Robust Dialogue System with Spontaneous Speech Understanding and Cooperative Response. - Toshihiko Ito; Akihiro Denda; Satoru Kogure; Seiichi Nakagawa (Real Applications@ACL/EACL, 1997)

Speaker verification using frame and utterance level likelihood normalization. - Seiichi Nakagawa; Konstantin P. Markov (ICASSP, 1997)

Automatic detection of accent in English words spoken by Japanese students. - Nobuaki Minematsu; Nariaki Ohashi; Seiichi Nakagawa (EUROSPEECH, 1997)

An English conversation and pronunciation CAI system using speech recognition technology. - Yasuhiro Taniguchi; Allan A. Reyes; Hideyuki Suzuki; Seiichi Nakagawa (EUROSPEECH, 1997)

Speech recognition using hidden Markov models based on segmental statistics. - Seiichi Nakagawa; Kazumasa Yamamoto (Syst. Comput. Jpn., 1997)

Evaluation of Japanese manners of generating word accent of English based on a stressed syllable detection technique. - Yukiko Fujisawa; Nobuaki Minematsu; Seiichi Nakagawa (ICSLP, 1998)

Continuous speech recognition using segmental unit input HMMs with a mixture of probability density functions and context dependency. - Kengo Hanai; Kazumasa Yamamoto; Nobuaki Minematsu; Seiichi Nakagawa (ICSLP, 1998)

Dealing with out-of-vocabulary words and speech disfluencies in an n-gram based speech understanding system. - Atsuhiko Kai; Yoshifumi Hirose; Seiichi Nakagawa (ICSLP, 1998)

Text-independent speaker recognition using multiple information sources. - Konstantin P. Markov; Seiichi Nakagawa (ICSLP, 1998)

Discriminative training of GMM using a modified EM algorithm for speaker recognition. - Konstantin P. Markov; Seiichi Nakagawa (ICSLP, 1998)

Modeling of variations in cepstral coefficients caused by F0 changes and its application to speech processing. - Nobuaki Minematsu; Seiichi Nakagawa (ICSLP, 1998)

Comparison of continuous speech recognition systems with unknown-word processing for speech disfluencies. - Atsuhiko Kai; Seiichi Nakagawa (Syst. Comput. Jpn., 1998)

Text-independent speaker recognition using non-linear frame likelihood transformation. - Konstantin P. Markov; Seiichi Nakagawa (Speech Commun., 1998)

HMM composition of segmental unit input HMM for noisy speech recognition. - Kazumasa Yamamoto; Seiichi Nakagawa (EUROSPEECH, 1999)

A Retrieval System of Broadcast News Speech Documents through Keyboard and Voice. - Hiromitsu Nishizaki; Seiichi Nakagawa (TSD, 1999)

Usability of Browser-Based Pen-Touch/Speech User Interfaces for Form-Based Application in Mobile Environment. - Atsuhiko Kai; Takahiro Nakano; Seiichi Nakagawa (ICMI, 2000)

Overview of an intelligent system for information retrieval based on human-machine dialogue through spoken language. - Hiroya Fujisaki; Katsuhiko Shirai; Shuji Doshita; Seiichi Nakagawa; Keikichi Hirose; Shuichi Itahashi; Tatsuya Kawahara; Sumio Ohno; Hideaki Kikuchi; Kenji Abe; Shinya Kiriyama (INTERSPEECH, 2000)

A portable development tool for spoken dialogue systems. - Satoru Kogure; Seiichi Nakagawa (INTERSPEECH, 2000)

Performance comparison among HMM, DTW, and human abilities in terms of identifying stress patterns of word utterances. - Nobuaki Minematsu; Yukiko Fujisawa; Seiichi Nakagawa (INTERSPEECH, 2000)

Quality improvement of PSOLA analysis-synthesis using partial zero-phase conversion. - Nobuaki Minematsu; Seiichi Nakagawa (INTERSPEECH, 2000)

Instantaneous estimation of prosodic pronunciation habits for Japanese students to learn English pronunciation. - Nobuaki Minematsu; Seiichi Nakagawa (INTERSPEECH, 2000)

A system for retrieving broadcast news speech documents using voice input keywords and similarity between words. - Hiromitsu Nishizaki; Seiichi Nakagawa (INTERSPEECH, 2000)

Relationship among speaking style, inter-phoneme's distance and speech recognition performance. - Kazumasa Yamamoto; Seiichi Nakagawa (INTERSPEECH, 2000)

A Semantic Interpreter and a Cooperative Response Generator for a Robust Spoken Dialogue System. - Seiichi Nakagawa; Satoru Kogure; Toshihiko Itoh (Int. J. Pattern Recognit. Artif. Intell., 2000)

Discriminative training of HMM using maximum normalized likelihood algorithm. - Konstantin Markov; Seiichi Nakagawa; Satoshi Nakamura 001 (ICASSP, 2001)

Speaker change detection and speaker clustering using VQ distortion for broadcast news speech recognition. - Kazumasa Mori; Seiichi Nakagawa (ICASSP, 2001)

Experimental evaluation on confidence of agreement among multiple Japanese LVCSR models. - Yasuhiro Kodama; Takehito Utsuro; Hiromitsu Nishizaki; Seiichi Nakagawa (INTERSPEECH, 2001)

A fast calculation method in LVCSRS by time-skipping and clustering of probability density distributions. - Seiichi Nakagawa; Yukihisa Horibe (INTERSPEECH, 2001)

Instantaneous estimation of accentuation habits for Japanese students to learn English pronunciation. - Naoki Nakamura; Nobuaki Minematsu; Seiichi Nakagawa (INTERSPEECH, 2001)

Automatic construction of CALL system from TV news program with captions. - Takashi Tanaka; Kazumasa Mori; Satoshi Kobayashi; Seiichi Nakagawa (INTERSPEECH, 2001)

A Development Tool for Spoken Dialogue Systems and Its Evaluation. - Satoru Kogure; Seiichi Nakagawa (TSD, 2001)

Detection and recognition of repaired speech on misrecognized utterances for speech input of car navigation system. - Naoko Kakutani; Norihide Kitaoka; Seiichi Nakagawa (INTERSPEECH, 2002)

Evaluation of spectral subtraction with smoothing of time direction on the Aurora 2 task. - Norihide Kitaoka; Seiichi Nakagawa (INTERSPEECH, 2002)

Speaker independent speech recognition using features based on glottal sound source. - Norihide Kitaoka; Daisuke Yamada; Seiichi Nakagawa (INTERSPEECH, 2002)

Comparing isolately spoken keywords with spontaneously spoken queries for Japanese spoken document retrieval. - Hiromitsu Nishizaki; Seiichi Nakagawa (INTERSPEECH, 2002)

Syllable recognition using syllable-segment statistics and syllable-based HMM. - Nobutoshi Takahashi; Seiichi Nakagawa (INTERSPEECH, 2002)

A confidence measure based on agreement among multiple LVCSR models - correlation between pair of acoustic models and confidence. - Takehito Utsuro; Tetsuji Harada; Hiromitsu Nishizaki; Seiichi Nakagawa (INTERSPEECH, 2002)

English Speech Database Read by Japanese Learners for CALL System Development. - Nobuaki Minematsu; Yoshihiro Tomiyama; Kei Yoshimoto; Katsumasa Shimizu; Seiichi Nakagawa; Masatake Dantsuji; Shozo Makino (LREC, 2002)

Differences of speech rate, interphoneme distance and likelihood caused by speaking style, their relationship, and recognition performance. - Kazumasa Yamamoto; Seiichi Nakagawa (Syst. Comput. Jpn., 2002)

Speech recognition under noisy environments using segmental unit input HMM. - Kazumasa Yamamoto; Seiichi Nakagawa (Syst. Comput. Jpn., 2002)

Confidence of agreement among multiple LVCSR models and model combination by SVM. - Takehito Utsuro; Yasuhiro Kodama; Tomohiro Watanabe; Hiromitsu Nishizaki; Seiichi Nakagawa (ICASSP (1), 2003)

Detection and recognition of correction utterance in spontaneously spoken dialog. - Norihide Kitaoka; Naoko Kakutani; Seiichi Nakagawa (INTERSPEECH, 2003)

Comparison of effects of acoustic and language knowledge on spontaneous speech perception/recognition between human and automatic speech recognizer. - Norihide Kitaoka; Masahisa Shingu; Seiichi Nakagawa (INTERSPEECH, 2003)

Evaluating multiple LVCSR model combination in NTCIR-3 speech-driven web retrieval task. - Masahiko Matsushita; Hiromitsu Nishizaki; Takehito Utsuro; Yasuhiro Kodama; Seiichi Nakagawa (INTERSPEECH, 2003)

Text-independent speaker recognition by speaker-specific GMM and speaker adapted syllable-based HMM. - Seiichi Nakagawa; Wei Zhang (INTERSPEECH, 2003)

Generation of natural response timing using decision tree based on prosodic and linguistic information. - Masashi Takeuchi; Norihide Kitaoka; Seiichi Nakagawa (INTERSPEECH, 2003)

Interpreter for Highly Portable Spoken Dialogue System. - Masamitsu Umeda; Satoru Kogure; Seiichi Nakagawa (SIGDIAL Workshop, 2003)

Speaker change detection and speaker clustering using VQ distortion measure. - Seiichi Nakagawa; Kazumasa Mori (Syst. Comput. Jpn., 2003)

Integrating Cross-Lingually Relevant News Articles and Monolingual Web Documents in Bilingual Lexicon Acquisition. - Takehito Utsuro; Kohei Hino; Mitsuhiro Kida; Seiichi Nakagawa; Satoshi Sato (COLING, 2004)

Text-independent speaker recognition by combining speaker-specific GMM with speaker adapted syllable-based HMM. - Seiichi Nakagawa; Wei Zhang; Mitsuo Takahashi (ICASSP (1), 2004)

Robust distant speech recognition based on position dependent CMN. - Norihide Kitaoka; Longbiao Wang; Seiichi Nakagawa (INTERSPEECH, 2004)

Keyword recognition and extraction by multiple-LVCSRs with 60, 000 words in speech-driven WEB retrieval task. - Masahiko Matsushita; Hiromitsu Nishizaki; Seiichi Nakagawa; Takehito Utsuro (INTERSPEECH, 2004)

Speech interface for name input based on combination of recognition methods using syllable-based n-gram and word dictionary. - Hironori Oshikawa; Norihide Kitaoka; Seiichi Nakagawa (INTERSPEECH, 2004)

Unsupervised speaker adaptation using high confidence portion recognition results by multiple recognition systems. - Tomohiro Watanabe; Hiromitsu Nishizaki; Takehito Utsuro; Seiichi Nakagawa (INTERSPEECH, 2004)

An Empirical Study on Multiple LVCSR Model Combination by Machine Learning. - Takehito Utsuro; Yasuhiro Kodama; Tomohiro Watanabe; Hiromitsu Nishizaki; Seiichi Nakagawa (HLT-NAACL (Short Papers), 2004)

A Statistical Method of Evaluating Pronunciation Proficiency for English Words Spoken by Japanese. - Seiichi Nakagawa; Naoki Nakamura; Kazumasa Mori (IEICE Trans. Inf. Syst., 2004)

Confidence measure and rejection based on correctness probability of recognition candidates. - Norihide Kitaoka; Ichiro Akahori; Seiichi Nakagawa (Syst. Comput. Jpn., 2004)

Robust spoken document retrieval methods for misrecognition and out-of-vocabulary keywords. - Hiromitsu Nishizaki; Seiichi Nakagawa (Syst. Comput. Jpn., 2004)

Estimating high-confidence portions based on agreement among outputs of multiple LVCSR models. - Takehito Utsuro; Hiromitsu Nishizaki; Yasuhiro Kodama; Seiichi Nakagawa (Syst. Comput. Jpn., 2004)

Query Transitive Translation Using IR Score for Indonesian-Japanese CLIR. - Ayu Purwarianti; Masatoshi Tsuchiya; Seiichi Nakagawa (AIRS, 2005)

Multimodal interface for organization name input based on combination of isolated word recognition and continuous base-word recognition. - Norihide Kitaoka; Hironori Oshikawa; Seiichi Nakagawa (INTERSPEECH, 2005)

A statistical method of evaluating pronunciation proficiency for Japanese words. - Kei Ohta; Seiichi Nakagawa (INTERSPEECH, 2005)

Robust distant speaker recognition based on position dependent cepstral mean normalization. - Longbiao Wang; Norihide Kitaoka; Seiichi Nakagawa (INTERSPEECH, 2005)

Robust distant speech recognition based on position dependent CMN using a novel multiple microphone processing technique. - Longbiao Wang; Norihide Kitaoka; Seiichi Nakagawa (INTERSPEECH, 2005)

Improving Keyword Recognition of Spoken Queries by Combining Multiple Speech Recognizer's Outputs for Speech-driven WEB Retrieval Task. - Masahiko Matsushita; Hiromitsu Nishizaki; Takehito Utsuro; Seiichi Nakagawa (IEICE Trans. Inf. Syst., 2005)

An Unsupervised Speaker Adaptation Method for Lecture-Style Spontaneous Speech Recognition Using Multiple Recognition Systems. - Seiichi Nakagawa; Tomohiro Watanabe; Hiromitsu Nishizaki; Takehito Utsuro (IEICE Trans. Inf. Syst., 2005)

Detection and recognition of correction utterances on misrecognition of spoken dialog system. - Norihide Kitaoka; Naoko Kakutani; Seiichi Nakagawa (Syst. Comput. Jpn., 2005)

Large-vocabulary continuous speech recognition using linear lexicon search and 1-best approximation tree-structured lexicon search. - Norihide Kitaoka; Nobutoshi Takahashi; Seiichi Nakagawa (Syst. Comput. Jpn., 2005)

Combining outputs of multiple LVCSR models by machine learning. - Takehito Utsuro; Yasuhiro Kodama; Tomohiro Watanabe; Hiromitsu Nishizaki; Seiichi Nakagawa (Syst. Comput. Jpn., 2005)

Noisy speech recognition based on selection of multiple noise suppression methods using noise GMMs. - Norihide Kitaoka; Souta Hamaguchi; Seiichi Nakagawa (INTERSPEECH, 2006)

A spoken Dialog System with Automatic Recovery Mechanism from misrecognition. - Norihide Kitaoka; Hirotoshi Yano; Seiichi Nakagawa (SLT, 2006)

Summarization of spoken Lectures Based on Linguistic Surface and prosodic Information. - Shingo Togashi; Masaru Yamaguchi; Seiichi Nakagawa (SLT, 2006)

Robust Distant Speech Recognition by Combining Multiple Microphone-Array Processing with Position-Dependent CMN. - Longbiao Wang; Norihide Kitaoka; Seiichi Nakagawa (EURASIP J. Adv. Signal Process., 2006)

Text-Independent/Text-Prompted Speaker Recognition by Combining Speaker-Specific GMM with Speaker Adapted Syllable-Based HMM. - Seiichi Nakagawa; Wei Zhang; Mitsuo Takahashi (IEICE Trans. Inf. Syst., 2006)

Response Timing Detection Using Prosodic and Linguistic Information for Human-friendly Spoken Dialog Systems. - Norihide Kitaoka; Masashi Takeuchi; Ryota Nishimura; Seiichi Nakagawa (Inf. Media Technol., 2006)

Expanding Indonesian-Japanese Small Translation Dictionary Using a Pivot Language. - Masatoshi Tsuchiya; Ayu Purwarianti; Toshiyuki Wakita; Seiichi Nakagawa (ACL, 2007)

A machine learning approach for indonesian question answering system. - Ayu Purwarianti; Masatoshi Tsuchiya; Seiichi Nakagawa (Artificial Intelligence and Applications, 2007)

Development of VAD evaluation framework CENSREC-1-C and investigation of relationship between VAD and speech recognition performance. - Norihide Kitaoka; Kazumasa Yamamoto; Tomohiro Kusamizu; Seiichi Nakagawa; Takeshi Yamada; Satoru Tsuge; Chiyomi Miyajima; Takanobu Nishiura; Masato Nakayama; Yuki Denda; Masakiyo Fujimoto; Tetsuya Takiguchi; et al. (ASRU, 2007)

Generalization of Linear Discriminant Analysis used in Segmental Unit Input HMM for Speech Recognition. - Makoto Sakai; Norihide Kitaoka; Seiichi Nakagawa (ICASSP (4), 2007)

Robust Distant Speech Recognition by Combining Position-Dependent CMN with Conventional CMN. - Longbiao Wang; Norihide Kitaoka; Seiichi Nakagawa (ICASSP (4), 2007)

Automatic extraction of cue phrases for important sentences in lecture speech and automatic lecture speech summarization. - Yasuhisa Fujii; Norihide Kitaoka; Seiichi Nakagawa (INTERSPEECH, 2007)

Speaker recognition by combining MFCC and phase information. - Seiichi Nakagawa; Kouhei Asakawa; Longbiao Wang (INTERSPEECH, 2007)

A statistical method of evaluating pronunciation proficiency for presentation in English. - Seiichi Nakagawa; Kei Ohta (INTERSPEECH, 2007)

Prosody change and response timing analysis in spontaneously spoken dialogs and their modeling in a spoken dialog system. - Ryota Nishimura; Norihide Kitaoka; Seiichi Nakagawa (INTERSPEECH, 2007)

Construction of spoken language model including fillers using filler prediction model. - Kengo Ohta; Masatoshi Tsuchiya; Seiichi Nakagawa (INTERSPEECH, 2007)

Selection of optimal dimensionality reduction method using chernoff bound for segmental unit input HMM. - Makoto Sakai; Norihide Kitaoka; Seiichi Nakagawa (INTERSPEECH, 2007)

One-pass LVCSR algorithm using linear lexicon search and 1-best approximation tree-structured lexicon search. - Norihide Kitaoka; Ying Liang; Nobutoshi Takahashi; Seiichi Nakagawa (ISSPA, 2007)

Power linear discriminant analysis. - Makoto Sakai; Norihide Kitaoka; Seiichi Nakagawa (ISSPA, 2007)

Analysis of effect of compensation parameter estimation for CMN on speech/speaker recognition. - Longbiao Wang; Norihide Kitaoka; Seiichi Nakagawa (ISSPA, 2007)

A Spoken Dialog System for Chat-Like Conversations Considering Response Timing. - Ryota Nishimura; Norihide Kitaoka; Seiichi Nakagawa (TSD, 2007)

A Machine Learning Approach for an Indonesian-English Cross Language Question Answering System. - Ayu Purwarianti; Masatoshi Tsuchiya; Seiichi Nakagawa (IEICE Trans. Inf. Syst., 2007)

Indonesian-Japanese Transitive Translation using English for CLIR. - Ayu Purwarianti; Masatoshi Tsuchiya; Seiichi Nakagawa (Inf. Media Technol., 2007)

Robust distant speaker recognition based on position-dependent CMN by combining speaker-specific GMM with speaker-adapted HMM. - Longbiao Wang; Norihide Kitaoka; Seiichi Nakagawa (Speech Commun., 2007)

Robust Extraction of Named Entity Including Unfamiliar Word. - Masatoshi Tsuchiya; Shinya Hida; Seiichi Nakagawa (ACL (2), 2008)

Class lecture summarization taking into account consecutiveness of important sentences. - Yasuhisa Fujii; Kazumasa Yamamoto; Norihide Kitaoka; Seiichi Nakagawa (INTERSPEECH, 2008)

Speech recognition performance of CJLC: corpus of Japanese lecture contents. - Satoru Kogure; Hiromitsu Nishizaki; Masatoshi Tsuchiya; Kazumasa Yamamoto; Shingo Togashi; Seiichi Nakagawa (INTERSPEECH, 2008)

Analysis of relationship between impression of human-to-human conversations and prosodic change and its modeling. - Ryota Nishimura; Norihide Kitaoka; Seiichi Nakagawa (INTERSPEECH, 2008)

Evaluating spoken language model based on filler prediction model in speech recognition. - Kengo Ohta; Masatoshi Tsuchiya; Seiichi Nakagawa (INTERSPEECH, 2008)

A browsing system for classroom lecture speech. - Shingo Togashi; Seiichi Nakagawa (INTERSPEECH, 2008)

Blind dereverberation based on CMN and spectral subtraction by multi-channel LMS algorithm. - Longbiao Wang; Seiichi Nakagawa; Norihide Kitaoka (INTERSPEECH, 2008)

Developing Corpus of Japanese Classroom Lecture Speech Contents. - Masatoshi Tsuchiya; Satoru Kogure; Hiromitsu Nishizaki; Kengo Ohta; Seiichi Nakagawa (LREC, 2008)

Noisy Speech Recognition Based on Integration/Selection of Multiple Noise Suppression Methods Using Noise GMMs. - Norihide Kitaoka; Souta Hamaguchi; Seiichi Nakagawa (IEICE Trans. Inf. Syst., 2008)

Linear Discriminant Analysis Using a Generalized Mean of Class Covariances and Its Application to Speech Recognition. - Makoto Sakai; Norihide Kitaoka; Seiichi Nakagawa (IEICE Trans. Inf. Syst., 2008)

Robust Speech Recognition by Combining Short-Term and Long-Term Spectrum Based Position-Dependent CMN with Conventional CMN. - Longbiao Wang; Seiichi Nakagawa; Norihide Kitaoka (IEICE Trans. Inf. Syst., 2008)

Privacy Protection for Speech Information. - Kazumasa Yamamoto; Seiichi Nakagawa (IAS, 2009)

Analysis and Robust Extraction of Changing Named Entities. - Masatoshi Tsuchiya; Shoko Endo; Seiichi Nakagawa (NEWS@IJCNLP, 2009)

Response timing generation and response type selection for a spontaneous spoken dialog system. - Ryota Nishimura; Seiichi Nakagawa (ASRU, 2009)

Language Model Based on Word Order Sensitive Matrix Representation in Latent Semantic Analysis for Speech Recognition. - Welly Naptali; Masatoshi Tsuchiya; Seiichi Nakagawa (CSIE (7), 2009)

High improvement of speaker identification and verification by combining MFCC and phase information. - Longbiao Wang; Shinji Ohtsuka; Seiichi Nakagawa (ICASSP, 2009)

Estimating the position and orientation of an acoustic source with a microphone array network. - Alberto Yoshihiro Nakano; Seiichi Nakagawa; Kazumasa Yamamoto (INTERSPEECH, 2009)

Topic dependent language model based on topic voting on noun history. - Welly Naptali; Masatoshi Tsuchiya; Seiichi Nakagawa (INTERSPEECH, 2009)

Effective use of pause information in language modelling for speech recognition. - Kengo Ohta; Masatoshi Tsuchiya; Seiichi Nakagawa (INTERSPEECH, 2009)

Speaker identification by combining MFCC and phase information in noisy environments. - Longbiao Wang; Kazue Minami; Kazumasa Yamamoto; Seiichi Nakagawa (ICASSP, 2010)

Improving the readability of class lecture ASR results using a confusion network. - Yasuhisa Fujii; Kazumasa Yamamoto; Seiichi Nakagawa (INTERSPEECH, 2010)

Automatic evaluation of English pronunciation by Japanese speakers using various acoustic features and pattern recognition techniques. - Kuniaki Hirabayashi; Seiichi Nakagawa (INTERSPEECH, 2010)

Constructing Japanese test collections for spoken term detection. - Yoshiaki Itoh 001; Hiromitsu Nishizaki; Xinhui Hu; Hiroaki Nanjo; Tomoyosi Akiba; Tatsuya Kawahara; Seiichi Nakagawa; Tomoko Matsui; Yoichi Yamashita; Kiyoaki Aikawa (INTERSPEECH, 2010)

Lecture subtopic retrieval by retrieval keyword expansion using subordinate concept. - Noboru Kanedera; Tetsuo Funada; Seiichi Nakagawa (INTERSPEECH, 2010)

Integration of cache-based model and topic dependent class model with soft clustering and soft voting. - Welly Naptali; Masatoshi Tsuchiya; Seiichi Nakagawa (INTERSPEECH, 2010)

Speech recognition using long-term phase information. - Kazumasa Yamamoto; Eiichi Sueyoshi; Seiichi Nakagawa (INTERSPEECH, 2010)

Evaluation of Privacy Protection Techniques for Speech Signals. - Kazumasa Yamamoto; Seiichi Nakagawa (IPMU (2), 2010)

Out-of-vocabulary term detection by n-gram array with distance from continuous syllable recognition results. - Keisuke Iwami; Yasuhisa Fujii; Kazumasa Yamamoto; Seiichi Nakagawa (SLT, 2010)

Topic dependent class based language model evaluation on automatic speech recognition. - Welly Naptali; Masatoshi Tsuchiya; Seiichi Nakagawa (SLT, 2010)

Distant Speech Recognition Using a Microphone Array Network. - Alberto Yoshihiro Nakano; Seiichi Nakagawa; Kazumasa Yamamoto (IEICE Trans. Inf. Syst., 2010)

Evaluation of Combinational Use of Discriminant Analysis-Based Acoustic Feature Transformation and Discriminative Training. - Makoto Sakai; Norihide Kitaoka; Yuya Hattori; Seiichi Nakagawa; Kazuya Takeda (IEICE Trans. Inf. Syst., 2010)

Speaker Recognition by Combining MFCC and Phase Information in Noisy Conditions. - Longbiao Wang; Kazue Minami; Kazumasa Yamamoto; Seiichi Nakagawa (IEICE Trans. Inf. Syst., 2010)

Topic-Dependent Language Model with Voting on Noun History. - Welly Naptali; Masatoshi Tsuchiya; Seiichi Nakagawa (ACM Trans. Asian Lang. Inf. Process., 2010)

Detection of precisely transcribed parts from inexact transcribed corpus. - Kengo Ohta; Masatoshi Tsuchiya; Seiichi Nakagawa (ASRU, 2011)

Automatic speech recognition using Hidden Conditional Neural Fields. - Yasuhisa Fujii; Kazumasa Yamamoto; Seiichi Nakagawa (ICASSP, 2011)

Efficient out-of-vocabulary term detection by n-gram array indices with distance from a syllable lattice. - Keisuke Iwami; Yasuhisa Fujii; Kazumasa Yamamoto; Seiichi Nakagawa (ICASSP, 2011)

Hidden Boosted MMI and Hierarchical State Posterior Feature for Automatic Speech Recognition Based on Hidden Conditional Neural Fields. - Yasuhisa Fujii; Kazumasa Yamamoto; Seiichi Nakagawa (INTERSPEECH, 2011)

New Feature Parameters for Pronunciation Evaluation in English Presentations at International Conferences. - Hiroshi Kibishi; Seiichi Nakagawa (INTERSPEECH, 2011)

Lattice-Based Risk Minimization Training for Unsupervised Language Model Adaptation. - Akio Kobayashi; Takahiro Oku; Shinichi Homma; Toru Imai; Seiichi Nakagawa (INTERSPEECH, 2011)

Speech Recognition in Mixed Sound of Speech and Music Based on Vector Quantization and Non-Negative Matrix Factorization. - Shoichi Nakano; Kazumasa Yamamoto; Seiichi Nakagawa (INTERSPEECH, 2011)

High speed spoken term detection by combination of n-gram array of a syllable lattice and LVCSR result for NTCIR-SpokenDoc. - Keisuke Iwami; Seiichi Nakagawa (NTCIR, 2011)

Distant-Talking Speech Recognition Based on Spectral Subtraction by Multi-Channel LMS Algorithm. - Longbiao Wang; Norihide Kitaoka; Seiichi Nakagawa (IEICE Trans. Inf. Syst., 2011)

Soft-clustering technique for training data in Age-and gender-independent speech recognition. - Daisuke Enami; Faqiang Zhu; Kazumasa Yamamoto; Seiichi Nakagawa (APSIPA, 2012)

On the use of phase information-based joint factor analysis for speaker verification under channel mismatch condition. - Ikuya Hirano; Longbiao Wang; Atsuhiko Kai; Seiichi Nakagawa (APSIPA, 2012)

An online evaluation system for English pronunciation intelligibility for Japanese English learners. - Hiroshi Kibishi; Seiichi Nakagawa (APSIPA, 2012)

Fast NMF based approach and improved VQ based approach for speech recognition from mixed sound. - Shoichi Nakano; Kazumasa Yamamoto; Seiichi Nakagawa (APSIPA, 2012)

Multi-objective optimization for semi-supervised discriminative language modeling. - Akio Kobayashi; Takahiro Oku; Toru Imai; Seiichi Nakagawa (ICASSP, 2012)

Developing Partially-Transcribed Speech Corpus from Edited Transcriptions. - Kengo Ohta; Masatoshi Tsuchiya; Seiichi Nakagawa (LREC, 2012)

Development of large vocabulary continuous speech recognition system for Mongolian language. - Seiichi Nakagawa; Erdenebat Turmunkh; Hiroshi Kibishi; Kengo Ohta; Yasuhisa Fujii; Masatoshi Tsuchiya; Kazumasa Yamamoto (SLTU, 2012)

Improving the Readability of ASR Results for Lectures Using Multiple Hypotheses and Sentence-Level Knowledge. - Yasuhisa Fujii; Kazumasa Yamamoto; Seiichi Nakagawa (IEICE Trans. Inf. Syst., 2012)

Hidden Conditional Neural Fields for Continuous Phoneme Speech Recognition. - Yasuhisa Fujii; Kazumasa Yamamoto; Seiichi Nakagawa (IEICE Trans. Inf. Syst., 2012)

Risk-Based Semi-Supervised Discriminative Language Modeling for Broadcast Transcription. - Akio Kobayashi; Takahiro Oku; Toru Imai; Seiichi Nakagawa (IEICE Trans. Inf. Syst., 2012)

Class-Based N-Gram Language Model for New Words Using Out-of-Vocabulary to In-Vocabulary Similarity. - Welly Naptali; Masatoshi Tsuchiya; Seiichi Nakagawa (IEICE Trans. Inf. Syst., 2012)

Speaker Identification and Verification by Combining MFCC and Phase Information. - Seiichi Nakagawa; Longbiao Wang; Shinji Ohtsuka (IEEE Trans. Speech Audio Process., 2012)

Topic-Dependent-Class-Based $n$-Gram Language Model. - Welly Naptali; Masatoshi Tsuchiya; Seiichi Nakagawa (IEEE Trans. Speech Audio Process., 2012)

Speaker identification using pseudo pitch synchronized phase information in noisy environments. - Yuta Kawakami; Longbiao Wang; Seiichi Nakagawa (APSIPA, 2013)

Fast NMF based approach and VQ based approach using MFCC distance measure for speech recognition from mixed sound. - Shoichi Nakano; Kazumasa Yamamoto; Seiichi Nakagawa (APSIPA, 2013)

Single channel dereverberation method in log-melspectral domain using limited stereo data for distant speaker identification. - Aditya Arie Nugraha; Kazumasa Yamamoto; Seiichi Nakagawa (APSIPA, 2013)

Robust/fast out-of-vocabulary spoken term detection by N-gram index with exact distance through text/speech input. - Nagisa Sakamoto; Seiichi Nakagawa (APSIPA, 2013)

Development and evaluation of spoken dialog systems with one or two agents. - Yuki Todo; Ryota Nishimura; Kazumasa Yamamoto; Seiichi Nakagawa (INTERSPEECH, 2013)

Overview of the NTCIR-10 SpokenDoc-2 Task. - Tomoyosi Akiba; Hiromitsu Nishizaki; Kiyoaki Aikawa; Xinhui Hu; Yoshiaki Itoh 001; Tatsuya Kawahara; Seiichi Nakagawa; Hiroaki Nanjo; Yoichi Yamashita (NTCIR, 2013)

Spoken Term Detection by N-gram Index with Exact Distance for NTCIR-SpokenDoc2. - Nagisa Sakamoto; Seiichi Nakagawa (NTCIR, 2013)

Development and Evaluation of Spoken Dialog Systems with One or Two Agents through Two Domains. - Yuki Todo; Ryota Nishimura; Kazumasa Yamamoto; Seiichi Nakagawa (TSD, 2013)

A robust/fast spoken term detection method based on a syllable n-gram index with a distance metric. - Seiichi Nakagawa; Keisuke Iwami; Yasuhisa Fujii; Kazumasa Yamamoto (Speech Commun., 2013)

Elimination of person names in spoken documents for privacy protection. - Ryo Kawaguchi; Masatoshi Tsuchiya; Seiichi Nakagawa (APSIPA, 2014)

Speech recognition based on Itakura-Saito divergence and dynamics/sparseness constraints from mixed sound of speech and music by non-negative matrix factorization. - Naoaki Hashimoto; Shoichi Nakano; Kazumasa Yamamoto; Seiichi Nakagawa (INTERSPEECH, 2014)

Sopoken Term Detection Based on a Syllable N-gram Index at the NTCIR-11 SpokenQuery&Doc Task. - Nagisa Sakamoto; Kazumasa Yamamoto; Seiichi Nakagawa (NTCIR, 2014)

Speaker Identification by Combining Various Vocal Tract and Vocal Source Features. - Yuta Kawakami; Longbiao Wang; Atsuhiko Kai; Seiichi Nakagawa (TSD, 2014)

Effect of acoustic and linguistic contexts on human and machine speech recognition. - Norihide Kitaoka; Daisuke Enami; Seiichi Nakagawa (Comput. Speech Lang., 2014)

Single-channel dereverberation by feature mapping using cascade neural networks for robust distant speaker identification and speech recognition. - Aditya Arie Nugraha; Kazumasa Yamamoto; Seiichi Nakagawa (EURASIP J. Audio Speech Music. Process., 2014)

Speech recognition for mixed speech and music by NMF using various cost functions and noise adaptive training methods. - Naoaki Hashimoto; Kazumasa Yamamoto; Seiichi Nakagawa (APSIPA, 2015)

Deep neural network based acoustic model using speaker-class information for short time utterance. - Hiroshi Seki; Kazumasa Yamamoto; Seiichi Nakagawa (APSIPA, 2015)

Combination of syllable based N-gram search and word search for spoken term detection through spoken queries and IV/OOV classification. - Nagisa Sakamoto; Kazumasa Yamamoto; Seiichi Nakagawa (ASRU, 2015)

Robust speech recognition using DNN-HMM acoustic model combining noise-aware training with spectral subtraction. - Akihiro Abe; Kazumasa Yamamoto; Seiichi Nakagawa (INTERSPEECH, 2015)

Relative phase information for detecting human speech and spoofed speech. - Longbiao Wang; Yohei Yoshida; Yuta Kawakami; Seiichi Nakagawa (INTERSPEECH, 2015)

Domain adaptation of a speech translation system for lectures by utilizing frequently appearing parallel phrases in-domain. - Norioki Goto; Kazumasa Yamamoto; Seiichi Nakagawa (APSIPA, 2016)

Investigation of glottal features and annotation procedures for speech emotion recognition. - Masaaki Takebe; Kazumasa Yamamoto; Seiichi Nakagawa (APSIPA, 2016)

Speech analysis of sung-speech and lyric recognition in monophonic singing. - Dairoku Kawai; Kazumasa Yamamoto; Seiichi Nakagawa (ICASSP, 2016)

DNN-Based Amplitude and Phase Feature Enhancement for Noise Robust Speaker Identification. - Zeyan Oo; Yuta Kawakami; Longbiao Wang; Seiichi Nakagawa; Xiong Xiao; Masahiro Iwahashi (INTERSPEECH, 2016)

Pseudo-pitch-synchronized phase information extraction and its application for robust speaker recognition. - Longbiao Wang; Seiichi Nakagawa; Jianwu Dang 001; Jianguo Wei; Tongtong Shen; Lantian Li; Thomas Fang Zheng (GCCE, 2017)

Detection of overlapping acoustic events based on NMF with shared basis vectors. - Kazumasa Yamamoto; Chikara Ishikawa; Koya Sahashi; Seiichi Nakagawa (GCCE, 2017)

Lyric recognition in monophonic singing using pitch-dependent DNN. - Dairoku Kawai; Kazumasa Yamamoto; Seiichi Nakagawa (ICASSP, 2017)

A deep neural network integrated with filterbank learning for speech recognition. - Hiroshi Seki; Kazumasa Yamamoto; Seiichi Nakagawa (ICASSP, 2017)

Captioning Methods of Lecture Videos for Learning in English. - Veri Ferdiansyah; Seiichi Nakagawa (ICCE, 2017)

Phase aware deep neural network for noise robust voice activity detection. - Longbiao Wang; Khomdet Phapatanaburi; Zeyan Oo; Seiichi Nakagawa; Masahiro Iwahashi; Jianwu Dang 001 (ICME, 2017)

Automatic Explanation Spot Estimation Method Targeted at Text and Figures in Lecture Slides. - Shoko Tsujimura; Kazumasa Yamamoto; Seiichi Nakagawa (INTERSPEECH, 2017)

Noise robust voice activity detection using joint phase and magnitude based feature enhancement. - Khomdet Phapatanaburi; Longbiao Wang; Zeyan Oo; Weifeng Li 001; Seiichi Nakagawa; Masahiro Iwahashi (J. Ambient Intell. Humaniz. Comput., 2017)

Spoofing Speech Detection Using Modified Relative Phase Information. - Longbiao Wang; Seiichi Nakagawa; Zhaofeng Zhang; Yohei Yoshida; Yuta Kawakami (IEEE J. Sel. Top. Signal Process., 2017)

Speech Recognition for English Uttered by Japanese with Various Proficiency Levels. - Hiroshi Kibishi; Seiichi Nakagawa (GCCE, 2018)

Multiple Phase Information Combination for Replay Attacks Detection. - Dongbo Li; Longbiao Wang; Jianwu Dang 001; Meng Liu 017; Zeyan Oo; Seiichi Nakagawa; Haotian Guan; Xiangang Li (INTERSPEECH, 2018)

Pitch Synchronized Relative Phase with Peak Error Detection For Noise-robust Speaker Recognition. - Meng Ge; Longbiao Wang; Seiichi Nakagawa; Yuta Kawakami; Jianwu Dang 001; Xiangang Li (ISCSLP, 2018)

Replay Attacks Detection Using Phase and Magnitude Features with Various Frequency Resolutions. - Meng Liu 017; Longbiao Wang; Zeyan Oo; Jianwu Dang 001; Dongbo Li; Seiichi Nakagawa (ISCSLP, 2018)

Rapid Speaker Adaptation of Neural Network Based Filterbank Layer for Automatic Speech Recognition. - Hiroshi Seki; Kazumasa Yamamoto; Tomoyosi Akiba; Seiichi Nakagawa (SLT, 2018)

Phase and reverberation aware DNN for distant-talking speech enhancement. - Zeyan Oo; Longbiao Wang; Khomdet Phapatanaburi; Masahiro Iwahashi; Seiichi Nakagawa; Jianwu Dang 001 (Multim. Tools Appl., 2018)

Evaluation of Real Robot Agent Interface for Spoken Dialogue System. - Kazumasa Yamamoto; Akira Tamagawa; Seiichi Nakagawa (GCCE, 2019)

Replay Attack Detection Using Magnitude and Phase Information with Attention-based Adaptive Filters. - Meng Liu 017; Longbiao Wang; Jianwu Dang 001; Seiichi Nakagawa; Haotian Guan; Xiangang Li (ICASSP, 2019)

Replay Attack Detection Using Linear Prediction Analysis-Based Relative Phase Features. - Khomdet Phapatanaburi; Longbiao Wang; Seiichi Nakagawa; Masahiro Iwahashi (IEEE Access, 2019)

Replay attack detection with auditory filter-based relative phase features. - Zeyan Oo; Longbiao Wang; Khomdet Phapatanaburi; Meng Liu 017; Seiichi Nakagawa; Masahiro Iwahashi; Jianwu Dang 001 (EURASIP J. Audio Speech Music. Process., 2019)

Discriminative Learning of Filterbank Layer within Deep Neural Network Based Speech Recognition for Speaker Adaptation. - Hiroshi Seki; Kazumasa Yamamoto; Tomoyosi Akiba; Seiichi Nakagawa (IEICE Trans. Inf. Syst., 2019)

Effectiveness of Fine Linear Frequency Spectral Feature for Acoustic Event Detection. - Kazumasa Yamamoto; Ryo Yamamoto; Seiichi Nakagawa (GCCE, 2020)

Improvement of Elderly Speech Recognition Using Gammatone Filterbank Adaptation. - Kazumasa Yamamoto; Akinori Ishiki; Seiichi Nakagawa (GCCE, 2021)

Classification of Imagined and Heard Speech Using Amplitude Spectrum and Relative Phase of EEG. - Ryota Sakai; Atsuhiko Kai; Seiichi Nakagawa (LifeTech, 2021)

Replay attack detection using variable-frequency resolution phase and magnitude features. - Meng Liu 017; Longbiao Wang; Jianwu Dang 001; Kong Aik Lee; Seiichi Nakagawa (Comput. Speech Lang., 2021)

Summarization of Spoken Lectures Based on MMR Method and Important/Unimportant Sentence Classification Using BERT. - Kento Masuda; Yui Hayakawa; Kazumasa Yamamoto; Seiichi Nakagawa (GCCE, 2022)

Learning affective representations based on magnitude and dynamic relative phase information for speech emotion recognition. - Lili Guo; Longbiao Wang; Jianwu Dang 001; Eng Siong Chng; Seiichi Nakagawa (Speech Commun., 2022)

Attention-based CNN and Relative Phase Feature Modeling for Improved Imagined Speech Recognition. - Yoshiki Niimura; Jun Takemoto; Atsuhiko Kai; Seiichi Nakagawa (APSIPA ASC, 2023)

A Study of Speech Recognition, Speech Translation, and Speech Summarization of TED English Lectures. - Kazumasa Yamamoto; Haruhiko Banno; Haruki Sakurai; Toichiro Adachi; Seiichi Nakagawa (GCCE, 2023)

Data Augmentation Methods and Influence of Speech Recognition Performance for TED Talk's English to Japanese Speech Translation. - Kento Masuda; Kazumasa Yamamoto; Seiichi Nakagawa (APSIPA, 2024)

Elderly Speech Recognition Using Whisper and Speaker Adaptation. - Kazumasa Yamamoto; Kosei Fukuhara; Seiichi Nakagawa (GCCE, 2024)

Significance of relative phase features for shouted and normal speech classification. - Khomdet Phapatanaburi; Longbiao Wang; Meng Liu 017; Seiichi Nakagawa; Talit Jumphoo; Peerapong Uthansakul (EURASIP J. Audio Speech Music. Process., 2024)