This paper describes the participation of the YNU-HPCC team in subtask A of task 11, Bridging the Gap in Text-Based Emotion at SemEval-2025.
Our best-performing system employs the RoBERTa (Robustly Optimized BERT Approach) model, an improved version of BERT that utilizes the Transformer encoder architecture.
We enhanced the output head to allow the model to process one emotion simultaneously.
We obtained the official ranking score (0.44), including results from all languages.
The entire dataset was translated into English using Google Translate to facilitate subsequent processing.
Through probabilistic and attention analyses, we found that (I) a single prediction head performs better than six heads predicting six emotions simultaneously, and (II) training on a uniformly translated English dataset yields better results than using the original dataset.
The code is available at: https://github.com/BGWH123/Semeval-2025-task11.