StoryTrans: Non-Parallel Story Author-Style Transfer with Discourse
Representations and Content Enhancing
- URL: http://arxiv.org/abs/2208.13423v2
- Date: Mon, 15 May 2023 07:24:26 GMT
- Title: StoryTrans: Non-Parallel Story Author-Style Transfer with Discourse
Representations and Content Enhancing
- Authors: Xuekai Zhu, Jian Guan, Minlie Huang, Juan Liu
- Abstract summary: Long texts usually involve more complicated author linguistic preferences such as discourse structures than sentences.
We formulate the task of non-parallel story author-style transfer, which requires transferring an input story into a specified author style.
We use an additional training objective to disentangle stylistic features from the learned discourse representation to prevent the model from degenerating to an auto-encoder.
- Score: 73.81778485157234
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Non-parallel text style transfer is an important task in natural language
generation. However, previous studies concentrate on the token or sentence
level, such as sentence sentiment and formality transfer, but neglect long
style transfer at the discourse level. Long texts usually involve more
complicated author linguistic preferences such as discourse structures than
sentences. In this paper, we formulate the task of non-parallel story
author-style transfer, which requires transferring an input story into a
specified author style while maintaining source semantics. To tackle this
problem, we propose a generation model, named StoryTrans, which leverages
discourse representations to capture source content information and transfer
them to target styles with learnable style embeddings. We use an additional
training objective to disentangle stylistic features from the learned discourse
representation to prevent the model from degenerating to an auto-encoder.
Moreover, to enhance content preservation, we design a mask-and-fill framework
to explicitly fuse style-specific keywords of source texts into generation.
Furthermore, we constructed new datasets for this task in Chinese and English,
respectively. Extensive experiments show that our model outperforms strong
baselines in overall performance of style transfer and content preservation.
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