A Generic NLI approach for Classification of Sentiment Associated with Therapies

This paper describes our system for addressing SMM4H 2023 Shared Task 2 on “Classification of sentiment associated with therapies (aspect-oriented)”. In our work, we adopt an approach based on Natural language inference (NLI) to formulate this task as a sentence pair classification problem, and train transformer models to predict sentiment associated with a therapy on a given text. Our best model achieved 75.22% F1-score which was 11% (4%) more than the mean (median) score of all teams’ submissions.