Ralph L. Rose

ROSE, Ralph L. (ローズ ラルフ レオン), Professor

ResearchMap site: https://researchmap.jp/ralphrose

Personal web site: http://www.roselab.sci.waseda.ac.jp/

E-mail: [rose@waseda.jp]

I have a deep fascination with speech fluency and disfluency in both native and nonnative speech, especially focusing on the use of filled pauses (um/uh, e-to/ano) in spoken and written communication. In addition to research, I occasionally discharge thoughts about these phenomena at my web site, Filled Pause Research Center. All of this informs my teaching of spoken communication skills in CELESE and work on natural language processing projects in spoken fluency measurement and development.


  • B.S. in Physics, Wheaton College, 1988
  • M.A. in TES/FL, Birmingham Univ., 1998
  • Ph.D. in Linguistics, Northwestern Univ., 2005

Current CELESE responsibilities

Administrative roles: Program Coordinator, Concept Building and Discussion course coordinator, Web site manager

Courses: Academic Reading, Academic Lecture Comprehension, Advanced Technical Presentation, Special Topics in Functional English

Research areas and interests

Hesitation Phenomena in first and second language, acoustic phonetics, natural language processing, educational technologies

Representative works

  • 2020 Rose, R. “Fluidity: Real-time Feedback on Acoustic Measures of Second Language Speech Fluency”. In Proceedings of the 10th International Conference on Speech Prosody 2020, pp. 774–778.
  • 2020 Rose, R. “Improving the Production Efficiency and Well-formedness of Automatically- Generated Multiple-Choice Cloze Vocabulary Questions”. In Proceedings of the 12th Conference on Language Resources and Evaluation (LREC 2020), pp. 7096–7103.
  • 2019 Rose, R. “A Comparison of Filled Pauses in Scripted and Non-Scripted Spontaneous Speech”. In Proceedings of LPSS 2019: The 3rd International Symposium on Linguistic Patterns in Spontaneous Speech, pp. 21–26.
  • 2017 Rose, R. “A Comparison of Form and Temporal Characteristics of Filled Pauses in L1 Japanese and L2 English”. In Journal of the Phonetic Society of Japan, 21(3): 33–40.
  • 2013 Rose, R. “Crosslinguistic Corpus of Hesitation Phenomena: A corpus for investigating first and second language speech performance”. In Proceedings of the 14th Annual Conference of the International Speech Communication Association (Interspeech 2013), pp. 992–996.


  • 2018 早稲田大学 AY2018 e-Teaching Award (Good Practice 賞) [Waseda University AY2018 e-Teaching Award (Good Practice Award)].
  • Frequent organizer, editor, reviewer, and supporter of the Disfluency in Spontaneous Speech (DiSS) workshop series
  • Principal Investigator, “Hesitation Phenomena in Second Language Learning”, JSPS Grant-in-aid for scientific research (2012-2014). Resulted in production of the Crosslinguistic Corpus of Hesitation Phenomena (CCHP) [link: https://filledpause.org/chp/cchpp/].