Parameter-Efficient Tuning Makes a Good Classification Head
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Abstract (arXiv)
In recent years, pretrained models revolutionized the paradigm of natural language understanding (NLU), where we append a randomly initialized classification head after the pretrained backbone, e.g. BERT, and finetune the whole model. As the pretrained backbone makes a major contribution to the improvement, we naturally expect a good pretrained classification head can also benefit the training. However, the final-layer output of the backbone, i.e. the input of the classification head, will change greatly during finetuning, making the usual head-only pretraining (LP-FT) ineffective. In this paper, we find that parameter-efficient tuning makes a good classification head, with which we can simply replace the randomly initialized heads for a stable performance gain. Our experiments demonstrate that the classification head jointly pretrained with parameter-efficient tuning consistently improves the performance on 9 tasks in GLUE and SuperGLUE.
Key facts. Cited by 15 papers in the map (data through 7 Oct 2026). Builds on 50 of its 65 references that are in the map. First posted on arXiv 30 Oct 2022.
Builds on
50 of 65 references.
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- 2023Test-Time Training for Speech19 Sep 2023
- 2023MT4CrossOIE: Multi-stage Tuning for Cross-lingual Open Information Extraction12 Aug 2023
12 newest of 14 All 14 (JSON)