Fully Non-autoregressive Neural Machine Translation: Tricks of the Trade
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Abstract (arXiv)
Fully non-autoregressive neural machine translation (NAT) is proposed to simultaneously predict tokens with single forward of neural networks, which significantly reduces the inference latency at the expense of quality drop compared to the Transformer baseline. In this work, we target on closing the performance gap while maintaining the latency advantage. We first inspect the fundamental issues of fully NAT models, and adopt dependency reduction in the learning space of output tokens as the basic guidance. Then, we revisit methods in four different aspects that have been proven effective for improving NAT models, and carefully combine these techniques with necessary modifications. Our extensive experiments on three translation benchmarks show that the proposed system achieves the new state-of-the-art results for fully NAT models, and obtains comparable performance with the autoregressive and iterative NAT systems. For instance, one of the proposed models achieves 27.49 BLEU points on WMT14 En-De with approximately 16.5X speed up at inference time.
Key facts. Cited by 99 papers in the map (data through 7 Oct 2026). First posted on arXiv 31 Dec 2020.
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Citing papers per year: 2021: 13; 2022: 34; 2023: 22; 2024: 15; 2025: 8; 2026: 7.
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- 2026Reconsidering Positional Supervision in Masked Diffusion Language Model Training30 Jan 2026
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- 2025FourierNAT: A Fourier-Mixing-Based Non-Autoregressive Transformer for Parallel Sequence Generation4 Mar 2025
- 2025Multilingual Non-Autoregressive Machine Translation without Knowledge Distillation6 Feb 2025
- 2025A Differentiable Alignment Framework for Sequence-to-Sequence Modeling via Optimal Transport3 Feb 2025
- 2024ENAT: Rethinking Spatial-temporal Interactions in Token-based Image Synthesis11 Nov 2024
- 2024The Mystery of the Pathological Path-star Task for Language Models17 Oct 2024
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