Papers › BERT and PALs: Projected Attention Layers for Efficient Adaptation in Multi-Task Learning

BERT and PALs: Projected Attention Layers for Efficient Adaptation in Multi-Task Learning

7 Feb 2019arXiv:1902.02671archive 2025-07-28

Asa Cooper Stickland, Iain Murray

Multi-task learning shares information between related tasks, sometimes reducing the number of parameters required. State-of-the-art results across multiple natural language understanding tasks in the GLUE benchmark have previously used transfer from a single large task: unsupervised pre-training with BERT, where a separate BERT model was fine-tuned for each task. We explore multi-task approaches that share a single BERT model with a small number of additional task-specific parameters. Using new adaptation modules, PALs or `projected attention layers', we match the performance of separately fine-tuned models on the GLUE benchmark with roughly 7 times fewer parameters, and obtain state-of-the-art results on the Recognizing Textual Entailment dataset.

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AsaCooperStickland/Bert-n-Pals officialmentioned in papermentioned on GitHubpytorch report
josselinsomervilleroberts/ptsl mentioned on GitHubpytorch report

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Tasks

Multi-Task LearningNatural Language InferenceNatural Language UnderstandingUnsupervised Pre-training

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AdamAttentionAttention DropoutBERTDense ConnectionsDropoutLayer NormalizationLinear LayerLinear Warmup With Linear DecayMulti-Head AttentionResidual ConnectionSoftmaxWeight DecayWordPiece

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