Author

Fan Zhang

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Preprint Aug 2026

RA-FinBERT: Rule-aware LoRA adaptation for low-resource financial sentiment classification

Rule-Aware FinBERT (RA-FinBERT), a parameter-efficient framework that integrates low-rank adaptation (LoRA) with three continuous VADER-derived sentiment proportions (positive, negative, and neutral) and a source-level metadata feature, is developed, indicating that rule-derived sentiment information and source metadat...

Fan Zhang, Jiamin Li · 0 citations