PEFT for Speech: Unveiling Optimal Placement, Merging Strategies, and Ensemble Techniques

Parameter-Efficient Fine-Tuning (PEFT) is increasingly recognized as an effective method in speech processing. However, the optimal approach and the placement of PEFT methods remain inconclusive. Our study conducts extensive experiments to compare different PEFT methods and their layer-wise placement adapting Differentiable Architecture Search (DARTS). We also explore the use of ensemble learning to leverage diverse PEFT strategies. The results reveal that DARTS does not outperform the baseline approach, which involves inserting the same PEFT method into all layers of a …

architecture cs.cl cs.sd differentiable eess.as ensemble explore fine-tuning layer merging peft placement processing search speech speech processing strategies study wise