Variational auto-encoders (VAEs) are widely used in natural language generation due to the regularization of the latent space. However, generating sentences from the continuous latent space does not explicitly model the syntactic information. In this paper, we propose to generate sentences from disentangled syntactic and semantic spaces. Our proposed method explicitly models syntactic information in the VAE's latent space by using the linearized tree sequence, leading to better performance of language generation. Additionally, the advantage of sampling in the disentangled syntactic and semantic latent spaces enables us to perform novel applications, such as the unsupervised paraphrase generation and syntax-transfer generation. Experimental results show that our proposed model achieves similar or better performance in various tasks, compared with state-of-the-art related work.

本文提出了一种基于变分自编码器的模型，通过在模型的潜在空间中使用线性化树序列显式建模句法信息，从而生成来自分离的句法和语义子空间的句子，并能应用于无监督的释义生成和句法转换等任务，实验结果优于现有相关工作。

从解耦的句法和语义空间生成句子