Sensi-BERT: Towards Sensitivity Driven Fine-Tuning for Parameter-Efficient BERT

• URL: http://arxiv.org/abs/2307.11764v2
• Date: Thu, 31 Aug 2023 17:09:23 GMT
• Title: Sensi-BERT: Towards Sensitivity Driven Fine-Tuning for Parameter-Efficient BERT
• Authors: Souvik Kundu, Sharath Nittur Sridhar, Maciej Szankin, Sairam Sundaresan
• Abstract summary: We present Sensi-BERT, a sensitivity driven efficient fine-tuning of BERT models for downstream tasks. Our experiments show the efficacy of Sensi-BERT across different downstream tasks including MNLI, QQP, QNLI, SST-2 and SQuAD.
• Score: 6.029590006321152
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Large pre-trained language models have recently gained significant traction due to their improved performance on various down-stream tasks like text classification and question answering, requiring only few epochs of fine-tuning. However, their large model sizes often prohibit their applications on resource-constrained edge devices. Existing solutions of yielding parameter-efficient BERT models largely rely on compute-exhaustive training and fine-tuning. Moreover, they often rely on additional compute heavy models to mitigate the performance gap. In this paper, we present Sensi-BERT, a sensitivity driven efficient fine-tuning of BERT models that can take an off-the-shelf pre-trained BERT model and yield highly parameter-efficient models for downstream tasks. In particular, we perform sensitivity analysis to rank each individual parameter tensor, that then is used to trim them accordingly during fine-tuning for a given parameter or FLOPs budget. Our experiments show the efficacy of Sensi-BERT across different downstream tasks including MNLI, QQP, QNLI, SST-2 and SQuAD, showing better performance at similar or smaller parameter budget compared to various alternatives.

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