Stanford MLab at SemEval-2025 Task 11: Track B–Emotion Intensity Detection

Joseph Le, Hannah Cui, James Zhang


Abstract
We outline our SemEval 2025 Track B: Emotion Intensity Prediction submission, for which the objective is to predict the intensity of six primary emotions—anger, disgust, fear, joy, sadness, and surprise—between 0 and 3, with 0 being none and 3 being very strong. We used a regression fine-tuned BERT-based model that makes use of pretrained embeddings in order to sense subtle emotional wordings in text.We include tokenization with a BERT tokenizer, training with AdamW optimization, and an ExponentialLR scheduler used for learning rate modification. Performance is monitored based on validation loss and accuracy through closeness of model outputs to gold labels.Our best-performing model is 68.97% accurate in validation and has a validation loss of 0.373, demonstrating BERT’s capability in fine-grained emotion intensity prediction. Key findings include that fine-tuning transformer models with regression loss improves prediction accuracy and that early stopping and learning rate scheduling avoid overfitting.Future improvements can include larger datasets, ensemble models, or other architectures such as RoBERTa and T5. This paper shows the potential of pretrained transformers for emotion intensity estimation and lays the groundwork for future computational emotion analysis research.
Anthology ID:
2025.semeval-1.244
Volume:
Proceedings of the 19th International Workshop on Semantic Evaluation (SemEval-2025)
Month:
July
Year:
2025
Address:
Vienna, Austria
Editors:
Sara Rosenthal, Aiala Rosá, Debanjan Ghosh, Marcos Zampieri
Venues:
SemEval | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
1866–1869
Language:
URL:
https://preview.aclanthology.org/corrections-2025-08/2025.semeval-1.244/
DOI:
Bibkey:
Cite (ACL):
Joseph Le, Hannah Cui, and James Zhang. 2025. Stanford MLab at SemEval-2025 Task 11: Track B–Emotion Intensity Detection. In Proceedings of the 19th International Workshop on Semantic Evaluation (SemEval-2025), pages 1866–1869, Vienna, Austria. Association for Computational Linguistics.
Cite (Informal):
Stanford MLab at SemEval-2025 Task 11: Track B–Emotion Intensity Detection (Le et al., SemEval 2025)
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PDF:
https://preview.aclanthology.org/corrections-2025-08/2025.semeval-1.244.pdf