Super Tickets in Pre-Trained Language Models: From Model Compression to Improving Generalization
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Abstract (arXiv)
The Lottery Ticket Hypothesis suggests that an over-parametrized network consists of ``lottery tickets'', and training a certain collection of them (i.e., a subnetwork) can match the performance of the full model. In this paper, we study such a collection of tickets, which is referred to as ``winning tickets'', in extremely over-parametrized models, e.g., pre-trained language models. We observe that at certain compression ratios, the generalization performance of the winning tickets can not only match but also exceed that of the full model. In particular, we observe a phase transition phenomenon: As the compression ratio increases, generalization performance of the winning tickets first improves then deteriorates after a certain threshold. We refer to the tickets on the threshold as ``super tickets''. We further show that the phase transition is task and model dependent -- as the model size becomes larger and the training data set becomes smaller, the transition becomes more pronounced. Our experiments on the GLUE benchmark show that the super tickets improve single task fine-tuning by 0.9 points on BERT-base and 1.0 points on BERT-large, in terms of task-average score. We also demonstrate that adaptively sharing the super tickets across tasks benefits multi-task learning.
Key facts. Cited by 56 papers in the map (data through 7 Oct 2026). Builds on 35 of its 52 references that are in the map. First posted on arXiv 25 May 2021.
Builds on
35 of 52 references.
References · 35
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- 2019Analyzing Multi-Head Self-Attention: Specialized Heads Do the Heavy Lifting, the Rest Can Be Prunedcited by 844
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- 2018Rethinking the Value of Network Pruningcited by 595
- 2019Reducing Transformer Depth on Demand with Structured Dropoutcited by 434
- 2019Multi-Task Deep Neural Networks for Natural Language Understandingcited by 349
- 2020The Lottery Ticket Hypothesis for Pre-trained BERT Networkscited by 275
- 2020Comparing Rewinding and Fine-tuning in Neural Network Pruningcited by 238
- 2019Deconstructing Lottery Tickets: Zeros, Signs, and the Supermaskcited by 206
- 2019Structured Pruning of Large Language Modelscited by 201
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- 2020The Early Phase of Neural Network Trainingcited by 114
- 2020When BERT Plays the Lottery, All Tickets Are Winningcited by 114
- 2019One ticket to win them all: generalizing lottery ticket initializations across datasets and optimizerscited by 102
- 2019Winning the Lottery with Continuous Sparsificationcited by 99
- 2020The Lottery Tickets Hypothesis for Supervised and Self-supervised Pre-training in Computer Vision Modelscited by 91
- 2019Playing the lottery with rewards and multiple languages: lottery tickets in RL and NLPcited by 73
- 2020The Lottery Ticket Hypothesis for Object Recognitioncited by 34
- 2019Learning Sparse Sharing Architectures for Multiple Taskscited by 31
- 2020The Microsoft Toolkit of Multi-Task Deep Neural Networks for Natural Language Understandingcited by 28
- 2020Scheduled DropHead: A Regularization Method for Transformer Modelscited by 28
- 2019Evaluating Lottery Tickets Under Distributional Shiftscited by 23
- 2020Successfully Applying the Stabilized Lottery Ticket Hypothesis to the Transformer Architecturecited by 23
- 2020Dissecting Lottery Ticket Transformers: Structural and Behavioral Study of Sparse Neural Machine Translationcited by 8
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Citing papers per year: 2021: 4; 2022: 17; 2023: 15; 2024: 12; 2025: 6; 2026: 2.
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