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Home / Proceedings / Proceedings of the AAAI Conference on Artificial Intelligence, 35 / No. 14: AAAI-21 Technical Tracks 14

Show Me How To Revise: Improving Lexically Constrained Sentence Generation with XLNet

February 1, 2023

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Authors

Xingwei He

The University of Hong Kong


Victor O.K. Li

The University of Hong Kong


DOI:

10.1609/aaai.v35i14.17536


Abstract:

Lexically constrained sentence generation allows the incorporation of prior knowledge such as lexical constraints into the output. This technique has been applied to machine translation, and dialog response generation. Previous work usually used Markov Chain Monte Carlo (MCMC) sampling to generate lexically constrained sentences, but they randomly determined the position to be edited and the action to be taken, resulting in many invalid refinements. To overcome this challenge, we used a classifier to instruct the MCMC-based models where and how to refine the candidate sentences. First, we developed two methods to create synthetic data on which the pre-trained model is fine-tuned to obtain a reliable classifier. Next, we proposed a two-step approach, “Predict and Revise”, for constrained sentence generation. During the predict step, we leveraged the classifier to compute the learned prior for the candidate sentence. During the revise step, we resorted to MCMC sampling to revise the candidate sentence by conducting a sampled action at a sampled position drawn from the learned prior. We compared our proposed models with many strong baselines on two tasks, generating sentences with lexical constraints and text infilling. Experimental results have demonstrated that our proposed model performs much better than the previous work in terms of sentence fluency and diversity. Our code, pre-trained models and Appendix are available at https://github.com/NLPCode/MCMCXLNet.

Topics: AAAI

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HOW TO CITE:

Xingwei He||Victor O.K. Li Show Me How To Revise: Improving Lexically Constrained Sentence Generation with XLNet Proceedings of the AAAI Conference on Artificial Intelligence (2021) 12989-12997.

Xingwei He||Victor O.K. Li Show Me How To Revise: Improving Lexically Constrained Sentence Generation with XLNet AAAI 2021, 12989-12997.

Xingwei He||Victor O.K. Li (2021). Show Me How To Revise: Improving Lexically Constrained Sentence Generation with XLNet. Proceedings of the AAAI Conference on Artificial Intelligence, 12989-12997.

Xingwei He||Victor O.K. Li. Show Me How To Revise: Improving Lexically Constrained Sentence Generation with XLNet. Proceedings of the AAAI Conference on Artificial Intelligence 2021 p.12989-12997.

Xingwei He||Victor O.K. Li. 2021. Show Me How To Revise: Improving Lexically Constrained Sentence Generation with XLNet. "Proceedings of the AAAI Conference on Artificial Intelligence". 12989-12997.

Xingwei He||Victor O.K. Li. (2021) "Show Me How To Revise: Improving Lexically Constrained Sentence Generation with XLNet", Proceedings of the AAAI Conference on Artificial Intelligence, p.12989-12997

Xingwei He||Victor O.K. Li, "Show Me How To Revise: Improving Lexically Constrained Sentence Generation with XLNet", AAAI, p.12989-12997, 2021.

Xingwei He||Victor O.K. Li. "Show Me How To Revise: Improving Lexically Constrained Sentence Generation with XLNet". Proceedings of the AAAI Conference on Artificial Intelligence, 2021, p.12989-12997.

Xingwei He||Victor O.K. Li. "Show Me How To Revise: Improving Lexically Constrained Sentence Generation with XLNet". Proceedings of the AAAI Conference on Artificial Intelligence, (2021): 12989-12997.

Xingwei He||Victor O.K. Li. Show Me How To Revise: Improving Lexically Constrained Sentence Generation with XLNet. AAAI[Internet]. 2021[cited 2023]; 12989-12997.


ISSN: 2374-3468


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Copyright 2022, Association for the Advancement of
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