An Ensemble Machine Learning Approach to Understanding the Effect of a Global Pandemic on Twitter Users’ Attitudes

IAENG Internaitonal journal of computer science

article

Bokang Jia¹  Domnica Dzitac¹  Samridha Shrestha¹  Komiljon Turdaliev¹  Nurgazy Seidaliev¹ 

[1] New York University Abu Dhabi

关键词: COVID-19;    Coronavirus;    Machine Learning;    Natural Language Processing;    Automatic Hate-Speech Detection;    Racism.;   

DOI  :  10.15837/ijccc.2021.2.4207

学科分类：计算机科学（综合）

来源: International Association of Engineers

【 摘 要 】

It is thought that the COVID-19 outbreak has significantly fuelled racism and discrimination, especially towards Asian individuals[10]. In order to test this hypothesis, in this paper, we build upon existing work in order to classify racist tweets before and after COVID-19 was declared a global pandemic. To overcome the difficult linguistic and unbalanced nature of the classification task, we combine an ensemble of machine learning techniques such as a Linear Support Vector Classifiers, Logistic Regression models, and Deep Neural Networks. We fill the gap in existing literature by (1) using a combined Machine Learning approach to understand the effect of COVID-19 on Twitter users’ attitudes and by (2) improving on the performance of automatic racism detectors. Here we show that there has not been a sharp increase in racism towards Asian people on Twitter and that users that posted racist Tweets before the pandemic are prone to post an approximately equal amount during the outbreak. Previous research on racism and other virus outbreaks suggests that racism towards communities associated with the region of the origin of the virus is not exclusively attributed to the outbreak but rather it is a continued symptom of deep-rooted biases towards minorities[13]. Our research supports these previous findings. We conclude that the COVID-19 outbreak is an additional outlet to discriminate against Asian people, instead of it being the main cause.

【 授权许可】

CC BY