Profile

• Name:

  • • Yuichiro KOBAYASHI

• Affiliation:

  • • Department of Liberal Arts and Basic Sciences, College of Industrial Technology, Nihon University

• Research interests:

  • • Corpus linguistics

    • Stylometry

    • Natural language processing

    • Language testing

    • Second language acquisition

    • English teaching as a foreign language

    • Text mining

    • Data mining

    • Machine learning

    • Digital humanities

      • • etc.

• Education:

  • • March 2012

      • • Ph.D (Language and Culture)

        • Graduate School of Language and Culture, Osaka University

    • March 2004

      • • M.A. (English)

        • Graduate School of Humanities (Department of English), Hosei University

    • March 2002

      • • B.A. (English)

        • Faculty of Letters (Department of English), Hosei University

• Professional experience:

  • • April 2022- 

      • • Department of Liberal Arts and Basic Sciences, College of Industrial Technology, Nihon University

        • Associate Professor

    • April 2020-March 2022

      • • Department of Liberal Arts and Basic Sciences, College of Industrial Technology, Nihon University

        • Full-time Lecturer

    • April 2017-March 2020

      • • Department of Liberal Arts and Basic Sciences, College of Industrial Technology, Nihon University

        • Assistant Professor

    • April 2015-March 2017

      • • Department of Media and Communications, Faculty of Sociology, Toyo University

        • Assistant Professor

    • April 2012-March 2015

      • • Japan Society for the Promotion of Science

        • Research Fellow (PD)

    • April 2010-March 2012

      • • Japan Society for the Promotion of Science

        • Research Fellow (DC2)

Papers (selected)

1. Mariko Abe, Yuichiro Kobayashi, & Yusuke Kondo (2024). Capturing chronological variation in L2 speech through lexical measurements and regression analysis. Applied Corpus Linguistics, 4(3). Link

2. Yuichiro Kobayashi (2023). Measuring the effects of frequency and dispersion on key expression analysis: Methodological recommendations. English Corpus Studies, 30, 117–129.

3. Yuichiro Kobayashi, Mariko Abe, and Yusuke Kondo (2022). Exploring L2 spoken developmental measures: Which linguistic features can predict the number of words? English Corpus Studies, 29, 1-18. Link

4. Yuichiro Kobayashi (2021). Identifying L2 developmental indices while controlling for L1 effects: A multilevel ordinal logistic regression analysis. Journal of Pan-Pacific Association of Applied Linguistics, 25(2), 87-104. Link

5. Yuichiro Kobayashi (2020). Rhetorical preferences in L2 writings: A contrastive analysis of metadiscourse markers. Journal of Modern Languages, 30(2), 1-24. Link

6. Masumi Narita, Yuichiro Kobayashi & Mariko Abe (2018). Recurrent multiword combinations in L1 and L2 argumentative essays. Asian EFL Journal, 20(1), 250-275. Link

7. Yuichiro Kobayashi (2017). Developmental patterns of metadiscourse in second language writing. Journal of Pan-Pacific Association of Applied Linguistics, 21(2), 41-54. *refereed Link

8. Yuichiro Kobayashi, Misaki Amagasa, & Takafumi Suzuki (2017). Investigating the chronological variation of popular song lyrics through lexical indices. Journal of the Japanese Association for Digital Humanities, 2(1), 90-107. *refereed Link

9. Yuichiro Kobayashi & Mariko Abe (2016). A corpus-based approach to the register awareness of Asian learners of English. Journal of Pan-Pacific Association of Applied Linguistics, 20(2), 1-17. *refereed Link

10. Yuichiro Kobayashi & Mariko Abe (2016). Automated scoring of L2 spoken English with random forests. Journal of Pan-Pacific Association of Applied Linguistics, 20(1), 55-73. *refereed Link

11. Yuichiro Kobayashi (2016). Investigating metadiscourse markers in Asian Englishes: A corpus-based approach. Language in Focus: International Journal of Studies in Applied Linguistics and ELT, 2(1), 19-35. *refereed Link

12. Yuichiro Kobayashi (2016). Heat map with hierarchical clustering: Multivariate visualization method for corpus-based language studies. NINJAL Research Papers, 11, 25-36. *refereed Link

13. Kiyomi Chujo, Yuichiro Kobayashi, Atsushi Mizumoto, & Kathryn Oghigian (2016). Exploring the effectiveness of combined web-based corpus tools for beginner EFL DDL. Linguistics and Literature Studies, 4(4), 262-274. *refereed Link

14. Yuichiro Kobayashi (2014). Computer-aided error analysis of L2 spoken English: A data mining approach. Proceedings of the Conference on Language and Technology 2014 (pp. 127-134). *refereed PDF

15. Yuichiro Kobayashi (2014). Exploring error patterns in L2 spoken English with data mining techniques. Proceedings of the 19th International Conference of Pan-Pacific Association of Applied Linguistics, 97-98. *refereed PDF

16. Yasutake Ishii, Satoru Uchida, Kyoko Hayashi & Yuichiro Kobayashi (2014). An analysis of three collocations dictionaries for learners of English. Lexicon, 44, 24-53. *refereed

17. Yuichiro Kobayashi & Mariko Abe (2014). A machine learning approach to the effects of writing task prompts. Learner Corpus Studies in Asia and the World, 2, 163-175. *refereed PDF

18. Yuichiro Kobayashi (2013). Analyzing developmental patterns of vocabulary used by Japanese EFL learners: A comparison of spoken and written learner corpora. In S. Granger, G. Gilquin, & F. Meunier  (Eds), Twenty years of learner corpus research: Looking back, moving ahead (pp. 277-287). Louvain-la-Neuve: Presses universitaires de Louvain. *refereed Link

19. Mariko Abe, Yuichiro Kobayashi & Masumi Narita (2013). Using multivariate statistical techniques to analyze the writing of East Asian learners of English. Learner Corpus Studies in Asia and the World, 1, 55-65. *refereed

20. Yuichiro Kobayashi & Kenji Kitao (2010). Comparing graded readers and authorized English language textbooks in junior and senior high schools: From the viewpoint of vocabulary and readability. Journal of Culture and Information Science, 5, 1-14. *refereed PDF

21. Yuichiro Kobayashi (2009). Profiling metadiscourse markers in native and non-native English. Lexicon, 39, 1-17. *refereed

Presentations (selected):

1. Yuichiro Kobayashi (10th September, 2021). Automated essay/speech scoring: A stylometric approach to language assessment. QUALICO 2021 (online) *invited

2. Mariko Abe, Yuichiro Kobayashi, Yusuke Kondo, & Yasuhiro Fujiwara (13th July, 2021). Identifying developmental indices of L2 spoken English through statistical modelling. Corpus Linguistics 2021 (online) *refereed

3. Mariko Abe, Yusuke Kondo, Yasuhiro Fujiwara, & Yuichiro Kobayashi (17th July, 2020). A longitudinal study of novice learners’ development of complexity. Teaching and Learning Corpora 2020 (online) *refereed

4. Mariko Abe, Yusuke Kondo, Yuichiro Kobayashi, Akira Murakami & Yasuhiro Fujiwara (12th September, 2019). A longitudinal study of L2 spoken English: Development of fluency and pronunciation. Learner Corpus Research 2019 (at University of Warsaw, Poland) *refereed 

5. Kow Kuroda, Hikaru Yokono, Keiga Abe, Tomoyuki Tsuchida, Yoshihiko Asao, Yuichiro Kobayashi, & Toshiyuki Kanamaru (25th July, 2019). Rudimentary modeling of acceptability judgement from a large scale, unbiased data. CogSci 2019 (Palais des congrès de Montréal, Canada). *refereed

6. Yuichiro Kobayashi (3rd May, 2019). Rhetorical preferences in L2 writings: A contrastive analysis of metadiscourse markers. Language in Focus 2019 (at Importanne Resort, Croatia). *refereed

7. Yuichiro Kobayashi (15th February, 2019). Second language discourse in Asian Englishes: A corpus-based approach. CamTESOL 2019 (at Institute of Technology, Cambodia). *refereed

8. Yuichiro Kobayashi, Yusuke Kondo & Mariko Abe (17th September, 2018). Predicting EFL learners’ oral proficiency levels in monologue tasks. Asia Pacific Corpus Linguistics Conference 2018 (at Sunport Hall Takamatsu, Japan) *refereed

9. Yusuke Kondo, Mariko Abe, Yutaka Ishii, & Yuichiro Kobayashi (21st August, 2018). The relationship between word error rate in automatic speech recognition and proficiency of L2 speech. Pan-Pacific Association of Applied Linguistics (PAAL) 2018 (at Juntendo University, Japan) *refereed

10. Mariko Abe, Yusuke Kondo, Yuichiro Kobayashi, Akira Murakami & Yasuhiro Fujiwara (18th-21st July, 2018). Initial findings from a longitudinal learner corpus: A year-long development of L2 speaking performance. Teaching and Learning Corpora 2018 (at the University of Cambridge, UK) *refereed 

11. Kiyomi Chujo, Atsushi Mizumoto, Yuichiro Kobayashi, Akira Hamada and Kathryn Oghigian (18th-21st July, 2018). Evaluating the appropriateness of the sentence corpus of remedial English to benefit beginner level EFL students. Teaching and Learning Corpora 2018 (at the University of Cambridge, UK) *refereed forthcoming!!

12. Mariko Abe, Yasuhiro Fujiwara & Yuichiro Kobayashi (5th October, 2017). Tracking L2 language development through construction of a longitudinal spoken learner corpus. Learner Corpus Research 2017 (at EURAC Research, Italy) *refereed

13. Yuichiro Kobayashi (10th August, 2017). Automated speech scoring: A text classification approach. Conference of the International Federation of Classification Societies 2017 (at Tokai University, Japan) *refereed

14. Yuichiro Kobayashi (26th July, 2017). Developmental patterns of metadiscourse in second language writing. Corpus Linguistics 2017 (at the University of Birmingham, UK) *refereed

15. Yuichiro Kobayashi & Akira Murakami (2nd March, 2017). Variation across L2 speech and writing: A multidimensional study. Language in Focus 2017 (at Kaya Artemis Resort, Cyprus) *refereed

16. Yuichiro Kobayashi & Akira Murakami (23rd October, 2016). Contrastive analysis of L2 speech and writing: A multi-dimensional approach. Asia Pacific Corpus Linguistics Conference 2016 (at Beihang University, China) *refereed

17. Yuichiro Kobayashi, Misaki Amagasa, & Takafumi Suzuki (26th August, 2016). Investigating the chronological variation of lyrics of popular songs through lexical indices. International Quantitative Linguistics Conference 2016 (at Europäische Rechts Akademie, Germany) *refereed

18. Mariko Abe & Yuichiro Kobayashi (10th March, 2016). Grammatical, morphological, and lexical errors between careful and vernacular styles. Language in Focus 2016 (at Kaya Ramada Plaza, Turkey) *refereed

19. Yuichiro Kobayashi (5th December, 2015). Comparing native and non-native English through significance tests and effects sizes. Pan-Pacific Association of Applied Linguistics (PAAL) 2015 (at Korea University, Korea) *refereed

20. Yuichiro Kobayashi (19th November, 2015). Investigating metadiscourse markers in Asian Englishes: A corpus-based approach. Symposium on Second Language Writing 2015 (at Auckland University of Technology, New Zealand) *refereed

21. Masumi Narita, Mariko Abe, & Yuichiro Kobayashi (21st July, 2015). Effects of a writing prompt on L2 learners' essays. Corpus Linguistics 2015 (at Lancaster University, UK) *refereed

22. Mariko Abe, Yuichiro Kobayashi & Masumi Narita (31st October, 2015). Distinctive and shared linguistic aspects of L2 written production by East Asian learners of English. Second International Symposium on EFL Writing in East Asia (at the University of Tokyo, Japan)

23. Tomoko Okazaki & Yuichiro Kobayashi (4th October, 2015). A statistical analysis of conjunctions in Early Middle Japanese with a focus on deictic expressions. International Symposium on the Japanese Diachronic Corpora (at National Institute for Japanese Language and Linguistics, Japan) *invited

24. Masumi Narita, Mariko Abe, & Yuichiro Kobayashi (21st July, 2015). Effects of a writing prompt on L2 learners' essays. Corpus Linguistics 2015 (at Lancaster University, UK) *refereed

25. Yuichiro Kobayashi (6th March, 2015). A corpus-based contrastive analysis of L2 metadiscourse. Language in Focus 2015 (at Lykia Lodge Kapadokya, Turkey) *refereed

26. Yuichiro Kobayashi (14th November, 2014). Computer-aided error analysis of L2 spoken English: A data mining approach. 5th Conference on Language and Technology (at DHA Suffa University, Pakistan) *refereed

27. Yuichiro Kobayashi & Mariko Abe (27th September, 2014). The similarity and difference between human scoring and automated scoring. Applied Linguistics Association of Korea (ALAK) 2014 (at Sangmyung University, Korea) *refereed

28. Yuichiro Kobayashi (17th August, 2014). Exploring error patterns in L2 spoken English with data mining techniques. Pan-Pacific Association of Applied Linguistics (PAAL) 2014 (at Waseda University, Japan) *refereed

29. Yuichiro Kobayashi & Mariko Abe (22nd July, 2014). How do L1 and proficiency level influence L2 written production? Teaching and Language Corpora (TaLC) 11 (at the Lancaster University, UK) *refereed

30. Yuichiro Kobayashi & Mariko Abe (31st May, 2014). A machine learning approach to the effects of writing task prompts. Learner Corpus Studies in Asia and the World (LCSAW) 2014 (at Kobe University, Japan)  *refereed

31. Yuichiro Kobayashi, Shosaku Tanaka, Yoichi Tomiura, Yoshinori Miyazaki, & Michio Tokumi (19th March, 2014).  Identifying discipline-specific expressions based on institutional repository. Digital Humanities Australasia 2014 (at the University of Western Australia, Australia) *refereed

32. Mariko Abe & Yuichiro Kobayashi (19th March, 2014).  Profiling developmental patterns of learner language. Digital Humanities Australasia 2014 (at the University of Western Australia, Australia) *refereed

33. Yuichiro Kobayashi & Mariko Abe (7th March, 2014). Automated scoring of L2 spoken English with random forests. Second Asia Pacific Corpus Linguistics Conference (APCLC 2014)  (at Hong Kong Polytechnic University, Hong Kong) *refereed

34. Mariko Abe, Yuichiro Kobayashi, & Masumi Narita (28th September, 2013). Linguistic features discriminating between native English speakers and East Asian learner groups with different proficiency levels. Learner Corpus Research 2013 (at Solstrand Hotel & Bad, Norway) *refereed

35. Yuichiro Kobayashi & Toshiyuki Kanamaru (25th July, 2013). Identification of linguistic features for predicting L2 proficiency levels using Coh-Metrix and machine learning. Corpus Linguistics 2013 (at Lancaster University, UK) *refereed

36. Mariko Abe, Yuichiro Kobayashi, & Masumi Narita (23rd March, 2013). Using multivariate statistical techniques to analyze writing of East Asian learners. Learner Corpus Studies in Asia and the World (LCSAW) 2013 (at Kobe University, Japan) *invited

37. Yuichiro Kobayashi & Toshiyuki Kanamaru (14th March, 2013). Predicting the proficiency levels of language learners using random forests. 5th International Conference on Corpus Linguistics (CILC 2013) (at the University of Alicante, Spain) *refereed

38. Yuichiro Kobayashi (10th December, 2012). A multivariate approach to metadiscourse markers in native and non-native English. Korean Association for Corpus Linguistics 2012 (at Pusan National University, Korea) *refereed

39. Yuichiro Kobayashi & Shosaku Tanaka (14th July, 2012). Syntax and discourse in good and poor scientific articles. Teaching and Language Corpora (TaLC) 10 (at the University of Warsaw, Poland) *refereed

40. Yuichiro Kobayashi (15th September, 2011). Analyzing developmental patterns of vocabulary used by Japanese EFL learners: A comparison of spoken and written learner corpora. Learner Corpus Research 2011 (at the Mercure Hotel in Louvain-la-Neuve, Belgium) *refereed

41. Tomoji Tabata, Harold Short, Gerhard Brey, Maki Miyake, Yuichiro Kobayashi, Miguel Vieira, & Matteo Romanello (13th September, 2011). Statistical text-mining on English Woman’s Journal. Osaka Symposium on Digital Humanities 2011 (at Osaka University, Japan) *refereed

42. Yuichiro Kobayashi (21st July, 2011). A corpus-based approach to the unnaturalness of non-native metadiscourse. Corpus Linguistics 2011 (at the International Convention Centre in Birmingham, UK) *refereed

43. Yuichiro Kobayashi (2nd June, 2011). A multivariate approach to the word-class distribution in L2 spoken English. ICAME 32 (at Clarion Royal Christiania Hotel, Norway) *refereed

44. Yuichiro Kobayashi (23rd September, 2010). Authorship attribution of Japanese texts using supervised and unsupervised classifications. Collaborative Research Workshop: New Methods in Textual Analysis and Text Mining (at King's College London, UK)

45. Yuichiro Kobayashi (21st March, 2010). Investigating stylistic variation in Japanese novelists through multivariate analysis of punctuation use. 2010 Osaka Workshop on Digital Humanities (at Osaka University, Japan) *invited

46. Yuichiro Kobayashi (29th March, 2009). Classifying language data: An introduction to Japanese text mining. 2009 Tokyo Workshop on Digital Humanities (at the University of Tokyo, Japan) *invited

Contact:

kobayashi0721[at]gmail.com