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Gradient Masters at BLP-2025 Task 1: Advancing Low-Resource NLP for Bengali using Ensemble-Based Adversarial Training for Hate Speech Detection

Published: November 23, 2025 | arXiv ID: 2511.18324v1

By: Syed Mohaiminul Hoque, Naimur Rahman, Md Sakhawat Hossain

Potential Business Impact:

Finds hate speech in Bengali YouTube comments.

Business Areas:
Natural Language Processing Artificial Intelligence, Data and Analytics, Software

This paper introduces the approach of "Gradient Masters" for BLP-2025 Task 1: "Bangla Multitask Hate Speech Identification Shared Task". We present an ensemble-based fine-tuning strategy for addressing subtasks 1A (hate-type classification) and 1B (target group classification) in YouTube comments. We propose a hybrid approach on a Bangla Language Model, which outperformed the baseline models and secured the 6th position in subtask 1A with a micro F1 score of 73.23% and the third position in subtask 1B with 73.28%. We conducted extensive experiments that evaluated the robustness of the model throughout the development and evaluation phases, including comparisons with other Language Model variants, to measure generalization in low-resource Bangla hate speech scenarios and data set coverage. In addition, we provide a detailed analysis of our findings, exploring misclassification patterns in the detection of hate speech.

Country of Origin
🇧🇩 Bangladesh

Page Count
6 pages

Category
Computer Science:
Computation and Language