日本語
The University of Electro-Communications 
Graduate School of Informatics and Engineering, School of Informatics and Engineering 
Department of Informatics, Cluster I (Informatics and Computer Engineering) 

顔写真 Assistant Professor 
TAKAGI KAZUYUKI 

Year of birth:1964  
 
Personal website  

Career
IBM Japan  ソフトウェア開発技術者  1989/04-1992/03 
電気通信大学電気通信学部情報工学科  Assistant Researcher  1995/04-Present 
電気通信大学電気通信学部情報工学科  助教  2007/04/01-2010/03/31 
電気通信大学大学院情報理工学研究科/情報理工学部  助教  2010/04/01-Present 

Academic background
都立武蔵丘高等学校  普通科  1982/03/31  Graduated 
University of Tsukuba  Third Cluster of College  情報学類情報科学専攻  1987/03/31  Graduated 
University of Tsukuba  Graduate School, Division of Science and Engineering  理工学専攻  Master's program  1989/03/31  Completed 
University of Tsukuba  Graduate School, Division of Engineering  電子・情報工学専攻  Doctoral program  1995/03/31  Completed 

Academic degrees
博士(工学)  University of Tsukuba  1995/03 

Classes responsible within the university
2017  大学院輪講第一(I)  Spring semester  Graduate, IE  Master's program  Subject in specialty 
2017  メディア情報学実験  Fall semester  Undergraduate, daytime  Subject in specialty 
2017  大学院輪講第一(II)  Fall semester  Graduate, IE  Master's program  Subject in specialty 
View details...

Current research areas
Perceptual information processing 
Intelligent informatics 

Current research subjects
spoken language identification  spoken language identification  2011/04-Present  音素の種類、音素の出現頻度、音素配列に現れる言語の違いに着目し、未知の話者が話した音声が何語であるかを推定する。連続音素認識器と利用した方式、および調音特徴に基づく方式。 
noise-robust automatic speech recognition  noisy speech automatic speech recognition statistical language model  1997/04-Present 

Preferable theme of joint or funded research
spoken language identification technology  Desire to engage in industry-academia collaboration and other forms of joint research with private and other organizations  Joint research 
View details...

Published papers
Paper  Yes  Referential reconstruction in complex frequency domain for word recognition under noisy environments  Takehiro Ihara, Kazuyuki Takagi, Kazuhiko Ozeki  The Journal of the Acoustical Society of Japan  64/ 9, 533-544  2008/09 
Paper  Yes  The Use of Overlapped Sub-Bands in Multi-Band, Multi-SNR, Multi-Path Recognition of Noisy Word Utterances  Yutaka TSUBOI, Takehiro IHARA, Kazuyuki TAKAGI, and Kazuhiko OZEKI  IEICE Transactions on Information and Systems  E91-D/ 6, 1774-1782  2008/06 
Paper  Yes  Sentence Compression Using Statistical Information About Dependency Path Length  Kiwamu Yamagata, Satoshi Fukutomi, Kazuyuki Takagi, Kazuhiko Ozeki  Lecture Notes in Artificial Intelligence 4188, Springer  4188/2006, 127-134  2006/09 
Paper  Yes  Japanese dependency structure analysis using information about multiple pauses anf F0  Meirong LU, Kazuyuki TAKAGI, and Kazuhiko OZEKI  IEICE Transactions on Information and Systems  E89-D/ 1, 298-304  2006/01 
Paper  Yes  Automatic adjustment of subband likelihood recombination weights for improving noise-robustness of a multi-SNR multi-band speaker identification system  Kenichi Yoshida,Kazuyuki Takagi,Kazuhiko Ozeki  IEICE Transactions on Information and Systems  E87-D/ 11, 2453-2459  2004/11 
View details...

Research presentations
Oral presentation for an academic conference  調音クラス事後確率を用いた言語識別 -線形判別分析を用いた特徴量抽出の改良-  日本音響学会2017年秋季研究発表会  2-Q-1  No  Keisuke Ishikawa, Kazuyuki Takagi  2017/09/26 
Oral presentation for an academic conference  Using local feature and group delay spectrum in language identification based on posterior probability of articulatory classes  日本音響学会2016年春季研究発表会  3-P-20  No  Risa Koizumi, Kazuyuki Takagi  2016/03/11 
Oral presentation for an academic conference  Effectiveness of local feature, group delay spectrum, MFCC and their combination on phoneme recognition performance  電子情報通信学会技術報告,2015年3月度音声研究会  SP2014/ 171  No  Risa Koizumi, Kazuyuki Takagi  2015/03/03 
Oral presentation for an academic conference  Automatic Language Identification Based on Posterior Probability on Articulatory Classes: Language-independent articulatory feature extractor and codebook size  電子情報通信学会技術報告,2015年3月度音声研究会  SP2014/ 169  No  Takumi Hirata, Kazuyuki Takagi  2015/03/03 
Oral presentation for an academic conference  Automatic Language Identification Based on Posterior Probability on Articulatory Classes  電子情報通信学会技術報告,第16回音声言語シンポジウム  No  Takumi Hirata, Kazuyuki Takagi  2014/12/16 
View details...

Past records of joint or funded research
水中音波生成・解析を利用した漏水探索ロボットの位置特定および漏水データの特性分析に関する研究  2017-2019  Commissioned research  Domestic joint research 
音響学的分析による多言語音声の分類・表示に関する研究  2008-2011  Joint research  Domestic joint research 
View details...

Memberships of academic societies
The Institute of Electronics, Information and Communication Engineers  1992/04-Present 
The Acoustical Society of Japan  1987/12-Present 
Information Processing Society of Japan  1992/04-Present 
The Japanese Society for Artificial Intelligence  1992/04-Present 
Phonetic Society of Japan  2009/04-Present 
View details...

Committee activity in the University
情報学専攻計算機管理委員会  計算機管理計画の策定、管理実務  2010/04-Present 
情報通信工学科計算機管理委員会  計算機管理計画の策定、管理実務  1999/04-2011/02 
View details...