Sentence-Permuted Paragraph Generation

Wenhao Yu, Chenguang Zhu, Tong Zhao, Zhichun Guo, Meng Jiang


Abstract
Generating paragraphs of diverse contents is important in many applications. Existing generation models produce similar contents from homogenized contexts due to the fixed left-to-right sentence order. Our idea is permuting the sentence orders to improve the content diversity of multi-sentence paragraph. We propose a novel framework PermGen whose objective is to maximize the expected log-likelihood of output paragraph distributions with respect to all possible sentence orders. PermGen uses hierarchical positional embedding and designs new procedures for training, and decoding in the sentence-permuted generation. Experiments on three paragraph generation benchmarks demonstrate PermGen generates more diverse outputs with a higher quality than existing models.
Anthology ID:
2021.emnlp-main.412
Volume:
Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing
Month:
November
Year:
2021
Address:
Online and Punta Cana, Dominican Republic
Editors:
Marie-Francine Moens, Xuanjing Huang, Lucia Specia, Scott Wen-tau Yih
Venue:
EMNLP
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
5051–5062
Language:
URL:
https://aclanthology.org/2021.emnlp-main.412
DOI:
10.18653/v1/2021.emnlp-main.412
Bibkey:
Cite (ACL):
Wenhao Yu, Chenguang Zhu, Tong Zhao, Zhichun Guo, and Meng Jiang. 2021. Sentence-Permuted Paragraph Generation. In Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing, pages 5051–5062, Online and Punta Cana, Dominican Republic. Association for Computational Linguistics.
Cite (Informal):
Sentence-Permuted Paragraph Generation (Yu et al., EMNLP 2021)
Copy Citation:
PDF:
https://aclanthology.org/2021.emnlp-main.412.pdf
Video:
 https://aclanthology.org/2021.emnlp-main.412.mp4
Code
 wyu97/permgen
Data
AGENDAROCStories