Last update: 2018-08-01
Yuta Hayashibe
yuta -at- hayashibe.jp

Research Interests

  • Computational Linguistics / Natural Language Processing
  • Semantic analysis using large-scale data

Professional Experience

Research Scientist at Megagon Labs in Recruit Co.,Ltd. (August 2018 - )

Scientist at Fairy Devices Inc. (October 2016 - January 2018)

Improved a Japanese language model for automatic speech recognition.
Constructed a Japanese morphological corpus for improvement of morphological analysis. Published a paper and released the corpus and tools on GitHub.

Researcher at Kyoto University (April 2014 - August 2016)

Automatically constructed a Japanese case frame dictionary by using over 4 billion sentences crawled from the web. Developed with Go and published a paper.
Developed a Japanese syntactic and semantic parser which exploits the case frame dictionary with C++. Published papers.

Part-time Researcher at National Diet Library (April 2013 - March 2014)

Researched and analyzed of web archiving and lectured on character code.

Intern at Rakuten Institute of Technology New York (August 2012 - October 2012)

Developed a writing assistant tool for ESL learners with JavaScript. Published papers and obtained a patent.

Education

Graduate School of Information Science, Nara Institute of Science and Technology (April 2011 - March 2014)

Ph.D in Engineering
Thesis title: Japanese Predicate Argument Structure Analysis Based on Positional Relations between Predicates and Arguments
Supervisor: Professor, Yuji Matsumoto

Graduate School of Information Science, Nara Institute of Science and Technology (April 2009 - March 2011)

Master of Engineering
Thesis title: Improving Japanese Inter-Sentential Predicate Argument Structure Analysis with Contextual Information and Similarity between Case Structure
Supervisor: Professor, Yuji Matsumoto

School of Engineering Science, Osaka University (April 2006 - March 2009)

Department of Information and Computer sciences
Withdrawal for early entrance of the graduate school

Publications

Conference papers (refereed)

  • Daisuke Kawahara, Yuta Hayashibe, Hajime Morita and Sadao Kurohashi. Automatically Acquired Lexical Knowledge Improves Japanese Joint Morphological and Dependency Analysis. Proceedings of the 15th International Conference on Parsing Technologies, pp.1-10. Pisa, Italy, September 21th 2017. (IWPT 2017) [PDF]
  • Yuta Hayashibe, Masato Hagiwara (RIT-NY) and Satoshi Sekine (RIT-NY), phloat : Integrated Writing Environment for ESL learners, In Proceedings of the Second Workshop on Advances in Text Input Methods, pp.57-72, Mumbai, India, December 15th 2012 (WTIM 2012) [PDF]
  • Tomoya Mizumoto, Yuta Hayashibe, Mamoru Komachi, Masaaki Nagata (NTT) and Yuji Matsumoto, The Effect of Learner Corpus Size in Grammatical Error Correction of ESL Writings, In Proceedings of the 24th International Conference on Computational Linguistics, pp.863-872, Mumbai, India, December 13th 2012 (COLING 2012) [PDF]
  • Yuta Hayashibe, Mamoru Komachi and Yuji Matsumoto , Japanese Predicate Argument Structure Analysis Exploiting Argument Position and Type, International Joint Conference on Natural Language Processing, Chiang Mai, Thailand, November 9th 2011 (IJCNLP 2011) [PDF]

Patent

    Yuta Hayashibe and Masato Hagiwara. Input Support Device, Input Support Method, and Input Support Program. Japanese patent No. 5897711, 2016.

Honors and awards

  • Best Paper Award, Special Interest Group of Natural Language Processing of the Information Processing Society of Japan (IPSJ-SIGNL), "Robust Japanese Case Frame Construction for Case Pattern Diversities" (December 2015)
  • Creative and International Competitiveness Project Member, "The corpus said the English in your parer was strange", Nara Institute of Science and Technology. (June 2012 - March 2013)
  • Best Student Paper Award, Special Interest Group of Natural Language Processing of the Information Processing Society of Japan (IPSJ-SIGNL), "Improving Japanese Inter-sentential Predicate Argument Structure Analysis with Contextual Information and Similarity between Case Structures" (May 2011)
  • Scholarship of Graduate School of Information Science, Nara Institute of Science and Technology. (April 2009 - March 2011)
  • Scholarship of Ito Scholarship Foundation for graduate students. (April 2009 - March 2011)
  • Creative and International Competitiveness Project Leader, "Creation of the dialog-system engine with sentiment expressions", Nara Institute of Science and Technology. (June 2009 - March 2010)
  • Scholarship of Ito Scholarship Foundation for undergraduate students. (April 2006 - March 2009)
  • Government-sponsored exchange student "Youths exchange program between Japan and Pacific nations" , Ministry of Foreign Affairs of Japan (August and November 2003)

Foreign Language Skills

Japanese
Native
English
TOEIC score 850 (January 2013)

Computer Skills

My OSS is available on GitHub
Languages: C, C++, Python, Go
Platforms: Linux, Mac OS, Windows