Know Where You're Going: Meta-Learning for Parameter-Efficient Fine-tuning

• URL: http://arxiv.org/abs/2205.12453v1
• Date: Wed, 25 May 2022 02:51:57 GMT
• Title: Know Where You're Going: Meta-Learning for Parameter-Efficient Fine-tuning
• Authors: Mozhdeh Gheini, Xuezhe Ma, Jonathan May
• Abstract summary: We show that taking the ultimate choice of fine-tuning method into consideration boosts the performance of parameter-efficient fine-tuning. We prime the pretrained model specifically for parameter-efficient fine-tuning, resulting in gains of up to 1.7 points on cross-lingual NER fine-tuning.
• Score: 34.66092282348687
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: A recent family of techniques, dubbed as lightweight fine-tuning methods, facilitates parameter-efficient transfer learning by updating only a small set of additional parameters while keeping the parameters of the pretrained language model frozen. While proven to be an effective method, there are no existing studies on if and how such knowledge of the downstream fine-tuning approach should affect the pretraining stage. In this work, we show that taking the ultimate choice of fine-tuning method into consideration boosts the performance of parameter-efficient fine-tuning. By relying on optimization-based meta-learning using MAML with certain modifications for our distinct purpose, we prime the pretrained model specifically for parameter-efficient fine-tuning, resulting in gains of up to 1.7 points on cross-lingual NER fine-tuning. Our ablation settings and analyses further reveal that the tweaks we introduce in MAML are crucial for the attained gains.

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