HTU at SemEval-2025 Task 11: Divide and Conquer - Multi-Label emotion classification using 6 DziriBERTs submodels with Label-fused Iterative Mask Filling technique for low-resource data augmentation.

AbstractIn this paper, the authors address the challenges of multi-label emotion detection in the Algerian dialect by proposing a novel Label-fused Iterative Mask Filling (L-IMF) data augmentation technique combined with a multi-model architecture. The approach leverages DziriBERT, a BERT variant pre-trained on Algerian text, to generate contextually and label-sensitive aug- mented data, mitigating class imbalance while preserving label consistency. The proposed method uses six independent classifiers, each trained on balanced datasets for dedicated la- bel, to improve performance. The results show significant improvement on mutli-label classification task using Deep Learning, with an F1 macro score of 0.536 on the validation dataset and 0.486 on the test dataset, the sys- tem ranked 28/41 on the Algerian dialect score- board; which is more than 7% higher than the task baseline using RemBERT.