A Random Forest Analysis of Can and May in Korean EFL Learners’ Writings
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It is predictable that the uses of English modal auxiliaries by English as a Foreign Language (EFL) learners differ from those by English as a Native Language (ENL) speakers. Following the studies in Deshors (2010) and Deshors & Gries (2014), Yoon and Lee (2016) adopted a corpus-based method and examined the uses of these two modal auxiliaries can and may by ENL speakers and Korean EFL learners. Utilizing the same corpus data used in Yoon and Lee (2016), this study investigates where the discrepancies were originated. This paper takes a random forest analysis and calculates the variable importance of each linguistic factor in the corpus data of each group. The analysis reveals which factors play a crucial role in the determination of alternations in each group. Through the analysis, the followings were observed: (i) Sense (deontic vs. epistemic vs. dynamic) played the most important role in the determination of can vs. may in both groups of speakers, (ii) Vendler’s classification, subject morpheme type, verb semantics, and animate type (of the subject) played essential roles in ENL speakers’ group, (iii) Subject person, subject morpheme type, animate type, and clause type played critical roles in Korean EFL learners’ group, and (iv) Korean EFL learners gave more importance to sense, subject morpheme type, animate type, and subject person whereas ENL speakers gave more importance to Vendler’s classification.
Abstract
It is predictable that the uses of English modal auxiliaries by English as a Foreign Language (EFL) learners differ from those by English as a Native Language (ENL) speakers. Following the studies in Deshors (2010) and Deshors & Gries (2014), Yoon and Lee (2016) adopted a corpus-based method and examined the uses of these two modal auxiliaries can and may by ENL speakers and Korean EFL learners. Utilizing the same corpus data used in Yoon and Lee (2016), this study investigates where the discrepancies were originated. This paper takes a random forest analysis and calculates the variable importance of each linguistic factor in the corpus data of each group. The analysis reveals which factors play a crucial role in the determination of alternations in each group. Through the analysis, the followings were observed: (i) Sense (deontic vs. epistemic vs. dynamic) played the most important role in the determination of can vs. may in both groups of speakers, (ii) Vendler’s classification, subject morpheme type, verb semantics, and animate type (of the subject) played essential roles in ENL speakers’ group, (iii) Subject person, subject morpheme type, animate type, and clause type played critical roles in Korean EFL learners’ group, and (iv) Korean EFL learners gave more importance to sense, subject morpheme type, animate type, and subject person whereas ENL speakers gave more importance to Vendler’s classification.
참고문헌 (29)
- Atkins, B, "Semantic ID tags: Corpus evidence for dictionary senses", Proceedings of the Third Annual Conference of the UW Centre for the New Oxford English Dictionary, pp.17~36 (1987)
- Bates, E, "Language Acquisition: The State of the Art", pp.73~218 (1982), Cambridge University Press
- Bates, E., "The Cross-linguistic Study of Sentence Processing", pp.3~73 (1989), Cambridge University Press
- TOEFL11: A Corpus of Non-native English, "Blanchard, D.", Educational Testing Service, ~, pp.ETS RR–13-24 (2013)
- Breiman, L., "Random forests", Machine Learning, 45(1), pp.5~32 (2001)
- Byloo, P., "Modality and Negation: A Corpus-based Study", Ph.D., pp.2009
- Coates, J., "On the Non-equivalence of May and Can", Lingua, 50(3), pp.209~220 (1980)
- Coates, J., "The Semantics of the Modal Auxiliaries" (1983), Croom Helm
- Collins, P., "Modals and Quasi-modals in English" (2009), Rodopi
- De Haan, F., "The Interaction of Modality and Negation: A Typological Study" (1997), Garland
- Deshors, S., "Multifactorial Study of the Uses of May and Can in French-English Interlanguage", Ph.D, pp.2010
- Deshors, S., "Subjectivity and Epistenicity: Stance Strategies in Discourse and Narration", pp.329~348 (2014), Lund University Press
- Deshors, S., "Profiling verb complementation constructions across new Englishes: A two-step random forests analysis of -ing vs. to complements", International Journal of Corpus Linguistics, 21(2), pp.192~218 (2016)
- Deshors, S, "Corpus Methods for Semantics:Quantitative Studies in Polysemy and Synonymy", pp.179~204 (2014), John Bejamins
- Granger, S., "International Corpus of Learner English. Version 2" (2009), Presses Universitaires de Louvain
- Greenbaum, S., "Comparing English Worldwide: The International Corpus of English" (1996), Claredon
- Hastie, T., "The Elements of Statistical Learning" (2008), Springer
- Hermerén, L., "On Modality in English: A Study of the Semantics of the Modals", pp.1978, LiberLäromedel
- Huddleston, R, "The Cambridge Grammar of the English Language" (2002), Cambridge University Press
- Palmer, F., "Modality and the English Modals" (1979), Longman
- Leech, G., "Towards a Semantic Description of English" (1969), Indiana University Press
- Leech, G., "Meaning and the English Verb" (2004), Longman
- Odlin, T., "Language Transfer" (1989), Cambridge University Press
- Odlin, T., "The Handbook of Second Language Acquisition", pp.436~386 (2003), Blackwell
- R Core Team, "R: A Language and Environment for Statistical Computing" (2016), R Foundation for Statistical Computing
- Radden, G, "Cognition in Language: Volume in Honour of Professor Elżbieta Tabakowska", pp.224~254 (2007), Tertium
- Selinker, L., "Language transfer", General Linguistics, 9(2), pp.67~92 (1969)
- Vendler, Z, "Verbs and times", The Philosophical Review, 66(2), pp.143~160 (1957)
- 윤태진, "A Multifactorial Analysis of Can and May in Korean EFL Learners Writings", 영어학연구, 22(1), pp.117~136 (2016), 한국영어학학회[DOI]