Parth Tusham

Author directory

2025

In today’s era of abundant online news, tackling the spread of deceptive content and manipulative narratives has become crucial. This paper details our system for SemEval-2025 Task 10, focusing on Subtasks 1 (Entity Framing) and 3 (Narrative Extraction). We instruct-tuned quantized Microsoft’s Phi-4 model, incorporating prompt engineering techniques to enhance performance. Our approach involved experimenting with various LLMs, including LLaMA, Phi-4, RoBERTa, and XLM-R, utilizing both quantized large models and non-quantized small models. To improve accuracy, we employed structured prompts, iterative refinement with retry mechanisms, and integrated label taxonomy information. For subtask 1, we also fine-tuned a RoBERTa classifier to predict main entity roles before classifying the fine-grained roles with Phi-4 for the English language. For subtask 3, we instruct-tuned Phi-4 to generate structured explanations, incorporating details about the article and its dominant narrative. Our system achieves competitive results in Hindi and Russian for Subtask 1.