bk1210/sarcasm-detector

🙄 Sarcasm Detector — Sentiment Incongruence Framework

Multi-Task RoBERTa that detects sarcasm and sentiment simultaneously.

🏆 Performance

🧠 Architecture

• —Backbone: RoBERTa-base
• —Primary Head: Sarcasm detection (binary, Focal Loss γ=2)
• —Auxiliary Head: Sentiment analysis (3-class CE Loss)
• —Novel Contribution: Sentiment-Incongruence Auto-Labeler
• —Loss: L = 0.7·Lsarcasm + 0.3·Lsentiment

📦 Datasets

• —Twitter Sarcasm Headlines Dataset v2 (primary, real labels)
• —SemEval ABSA — Laptop & Restaurant
• —Amazon Unlocked Mobile Reviews

👤 Author

Bharath Kesav R · Amrita Vishwa Vidyapeetham · GitHub · Portfolio