Native Language Identification of Fluent and Advanced Non-Native Writers

Author:

Sarwar Raheem1ORCID,Rutherford Attapol T.2,Hassan Saeed-Ul3ORCID,Rakthanmanon Thanawin4,Nutanong Sarana1

Affiliation:

1. School of Information Science and Technology, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong, Thailand

2. Department of Linguistics at Faculty of Arts Chulalongkorn University, Pathumwan, Bangkok, Thailand

3. Department of Computer Science, Information Technology University, Lahore, Punjab, Pakistan

4. Department of Computer Engineering, Kasetsart University, Thailand and School of Information Science and Technology, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong, Thailand

Abstract

Native Language Identification (NLI) aims at identifying the native languages of authors by analyzing their text samples written in a non-native language. Most existing studies investigate this task for educational applications such as second language acquisition and require the learner corpora. This article performs NLI in a challenging context of the user-generated-content (UGC) where authors are fluent and advanced non-native speakers of a second language. Existing NLI studies with UGC (i) rely on the content-specific/social-network features and may not be generalizable to other domains and datasets, (ii) are unable to capture the variations of the language-usage-patterns within a text sample, and (iii) are not associated with any outlier handling mechanism. Moreover, since there is a sizable number of people who have acquired non-English second languages due to the economic and immigration policies, there is a need to gauge the applicability of NLI with UGC to other languages. Unlike existing solutions, we define a topic-independent feature space, which makes our solution generalizable to other domains and datasets. Based on our feature space, we present a solution that mitigates the effect of outliers in the data and helps capture the variations of the language-usage-patterns within a text sample. Specifically, we represent each text sample as a point set and identify the top- k stylistically similar text samples (SSTs) from the corpus. We then apply the probabilistic k nearest neighbors’ classifier on the identified top- k SSTs to predict the native languages of the authors. To conduct experiments, we create three new corpora where each corpus is written in a different language, namely, English, French , and German . Our experimental studies show that our solution outperforms competitive methods and reports more than 80% accuracy across languages.

Funder

Higher Education Commission, and Grants for Development of New Faculty Staff at Chulalongkorn University

Digital Economy Promotion Agency

Thailand Research Funds

Publisher

Association for Computing Machinery (ACM)

Subject

General Computer Science

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