Application of Computational Linguistics to Predicting Language Proficiency Level of Persian Learners’ Textbooks
Publish place: Journal of Language Horizons، Vol: 6، Issue: 1
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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JR_LGHOR-6-1_002
تاریخ نمایه سازی: 10 خرداد 1401
Abstract:
One subfield of assessment of language proficiency is predicting language proficiency level.This research aims at proposing a computational linguistic model to predict language proficiency level and to explore the general properties of the levels. To this end, a corpus is developed from Persian learners' textbooks and statistical and linguistic features are extracted from this text corpus to train three classifiers as learners. The performance of the models vary based on the learning algorithm and the feature set(s) used for training the models. For evaluating the models, four standard metrics, namely accuracy, precision, recall, and F-measure were used. Based on the results, the model created by the Random Forest classifier performed the best when statistical features extracted from raw text is used. The Support Vector Machine classifier performed the best by using linguistic features extracted from the automatically annotated corpus. The results determine that enriching the model and providing various kinds of information do not guarantee that a classifier (learner) performs the best.To discover the latent teaching methodology of the textbooks, the general performance of the classifiers with respect to the language level and the linguistic knowledge used for creating the model are studied. Based on the obtained results, the amount of extracted features plays an important role in training a classifier. Furthermore, the average best performance of the classifiers is extending the linguistic knowledge from syntactic patterns at proficiency level A (beginner) to all linguistic information at levels B (intermediate) and C (advanced).
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Authors
مسعود قیومی
Assistant Professor, Faculty of Linguistics, Institute for the Humanities and Cultural Studies, Tehran, Iran;
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