Social media often serves as a breeding ground for various hateful and
offensive content. Identifying such content on social media is crucial due to
its impact on the race, gender, or religion in an unprejudiced society.
However, while there is extensive research in hate speech detection in English,
there is a gap in hateful content detection in low-resource languages like
Bengali. Besides, a current trend on social media is the use of Romanized
Bengali for regular interactions. To overcome the existing research's
limitations, in this study, we develop an annotated dataset of 10K Bengali
posts consisting of 5K actual and 5K Romanized Bengali tweets. We implement
several baseline models for the classification of such hateful posts. We
further explore the interlingual transfer mechanism to boost classification
performance. Finally, we perform an in-depth error analysis by looking into the
misclassified posts by the models. While training actual and Romanized datasets
separately, we observe that XLM-Roberta performs the best. Further, we witness
that on joint training and few-shot training, MuRIL outperforms other models by
interpreting the semantic expressions better. We make our code and dataset
public for others.

本研究针对 Bengali 等低资源语言在社交媒体上的仇恨言论进行研究，开发了一个定量数据集并建立了基线模型和一些额外的方法以更好地进行分类。在分析误分类之后，我们确认 XLM-Roberta 在单独训练 actual 或 rominized 数据集时表现最好。而在联合训练和小样本训练中，MuRIL 通过更好地解析语义表达比其他模型表现更优秀。