Directed Acyclic Transformer Pre-training for High-quality Non-autoregressive Text Generation
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Abstract (arXiv)
Non-AutoRegressive (NAR) text generation models have drawn much attention because of their significantly faster decoding speed and good generation quality in machine translation. However, in a wider range of text generation tasks, existing NAR models lack proper pre-training, making them still far behind the pre-trained autoregressive models. In this paper, we propose Pre-trained Directed Acyclic Transformer (PreDAT) and a novel pre-training task to promote prediction consistency in NAR generation. Experiments on five text generation tasks show that our PreDAT remarkably outperforms existing pre-trained NAR models (+4.2 scores on average) and even achieves better results than pre-trained autoregressive baselines in n-gram-based metrics, along with 17 times speedup in throughput. Further analysis shows that PreDAT benefits from the unbiased prediction order that alleviates the error accumulation problem in autoregressive generation, which provides new insights into the advantages of NAR generation.
Key facts. Cited by 8 papers in the map (data through 14 Oct 2026). Builds on 54 of its 76 references that are in the map. First posted on arXiv 24 Apr 2023.
Builds on
54 of 76 references.
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Citing papers per year: 2023: 3; 2024: 2; 2025: 1; 2026: 2.
8 papers.
- 2023Diffusion Language Models Can Perform Many Tasks with Scaling and Instruction-Finetuningcited by 39
- 2024Automatic Metrics in Natural Language Generation: A Survey of Current Evaluation Practicescited by 20
- 2023DASpeech: Directed Acyclic Transformer for Fast and High-quality Speech-to-Speech Translationcited by 9
- 2025ExLM: Rethinking the Impact of [MASK] Tokens in Masked Language Modelscited by 2
- 2026DOS: Dependency-Oriented Sampler for Masked Diffusion Language Modelscited by 2
- 2023Optimizing Non-Autoregressive Transformers with Contrastive Learningcited by 1
- 2024Control-DAG: Constrained Decoding for Non-Autoregressive Directed Acyclic T5 using Weighted Finite State Automatacited by 1
- 2026DA-DLM: Explicitly Modeling Token Dependencies in Diffusion Language Modelscited by 0
- 2026DA-DLM: Explicitly Modeling Token Dependencies in Diffusion Language Models14 Sep 2026
- 2026DOS: Dependency-Oriented Sampler for Masked Diffusion Language Models16 Mar 2026
- 2025ExLM: Rethinking the Impact of [MASK] Tokens in Masked Language Models23 Jan 2025
- 2024Automatic Metrics in Natural Language Generation: A Survey of Current Evaluation Practices17 Aug 2024
- 2024Control-DAG: Constrained Decoding for Non-Autoregressive Directed Acyclic T5 using Weighted Finite State Automata10 Apr 2024
- 2023DASpeech: Directed Acyclic Transformer for Fast and High-quality Speech-to-Speech Translation11 Oct 2023
- 2023Diffusion Language Models Can Perform Many Tasks with Scaling and Instruction-Finetuning23 Aug 2023
- 2023Optimizing Non-Autoregressive Transformers with Contrastive Learning23 May 2023