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Sentiment Classification of Code-Switched Text using Pre-trained Multilingual Embeddings and Segmentation

2022-10-29 01:52:25
Saurav K. Aryal, Howard Prioleau, Gloria Washington
arXiv_CL
             
Abstract

With increasing globalization and immigration, various studies have estimated that about half of the world population is bilingual. Consequently, individuals concurrently use two or more languages or dialects in casual conversational settings. However, most research is natural language processing is focused on monolingual text. To further the work in code-switched sentiment analysis, we propose a multi-step natural language processing algorithm utilizing points of code-switching in mixed text and conduct sentiment analysis around those identified points. The proposed sentiment analysis algorithm uses semantic similarity derived from large pre-trained multilingual models with a handcrafted set of positive and negative words to determine the polarity of code-switched text. The proposed approach outperforms a comparable baseline model by 11.2% for accuracy and 11.64% for F1-score on a Spanish-English dataset. Theoretically, the proposed algorithm can be expanded for sentiment analysis of multiple languages with limited human expertise.

Abstract (translated)

URL

https://arxiv.org/abs/2210.16461

PDF

https://arxiv.org/pdf/2210.16461.pdf

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