Pretraining Text Encoders with Adversarial Mixture of Training Signal Generators
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Abstract (arXiv)
We present a new framework AMOS that pretrains text encoders with an Adversarial learning curriculum via a Mixture Of Signals from multiple auxiliary generators. Following ELECTRA-style pretraining, the main encoder is trained as a discriminator to detect replaced tokens generated by auxiliary masked language models (MLMs). Different from ELECTRA which trains one MLM as the generator, we jointly train multiple MLMs of different sizes to provide training signals at various levels of difficulty. To push the discriminator to learn better with challenging replaced tokens, we learn mixture weights over the auxiliary MLMs' outputs to maximize the discriminator loss by backpropagating the gradient from the discriminator via Gumbel-Softmax. For better pretraining efficiency, we propose a way to assemble multiple MLMs into one unified auxiliary model. AMOS outperforms ELECTRA and recent state-of-the-art pretrained models by about 1 point on the GLUE benchmark for BERT base-sized models.
Key facts. Cited by 9 papers in the map (data through 7 Oct 2026). Builds on 37 of its 58 references that are in the map. First posted on arXiv 7 Apr 2022.
Builds on
37 of 58 references.
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25 more
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Built on by
Citing papers per year: 2022: 3; 2023: 3; 2024: 2; 2025: 1.
9 papers.
- 2024MATES: Model-Aware Data Selection for Efficient Pretraining with Data Influence Modelscited by 96
- 2022Tuning Language Models as Training Data Generators for Augmentation-Enhanced Few-Shot Learningcited by 36
- 2022METRO: Efficient Denoising Pretraining of Large Scale Autoencoding Language Models with Model Generated Signalscited by 20
- 2023Representation Deficiency in Masked Language Modelingcited by 10
- 2025ExLM: Rethinking the Impact of [MASK] Tokens in Masked Language Modelscited by 2
- 2022Language Model Pre-training on True Negativescited by 1
- 2023Model-Generated Pretraining Signals Improves Zero-Shot Generalization of Text-to-Text Transformerscited by 1
- 2023Fast-ELECTRA for Efficient Pre-trainingcited by 1
- 2024SpacTor-T5: Pre-training T5 Models with Span Corruption and Replaced Token Detectioncited by 0
- 2025ExLM: Rethinking the Impact of [MASK] Tokens in Masked Language Models23 Jan 2025
- 2024MATES: Model-Aware Data Selection for Efficient Pretraining with Data Influence Models10 Jun 2024
- 2024SpacTor-T5: Pre-training T5 Models with Span Corruption and Replaced Token Detection24 Jan 2024
- 2023Fast-ELECTRA for Efficient Pre-training11 Oct 2023
- 2023Model-Generated Pretraining Signals Improves Zero-Shot Generalization of Text-to-Text Transformers21 May 2023
- 2023Representation Deficiency in Masked Language Modeling4 Feb 2023
- 2022Language Model Pre-training on True Negatives1 Dec 2022
- 2022Tuning Language Models as Training Data Generators for Augmentation-Enhanced Few-Shot Learning6 Nov 2022
- 2022METRO: Efficient Denoising Pretraining of Large Scale Autoencoding Language Models with Model Generated Signals13 Apr 2022