This paper introduces a novel approach for topic modeling utilizing latent
codebooks from Vector-Quantized Variational Auto-Encoder~(VQ-VAE), discretely
encapsulating the rich information of the pre-trained embeddings such as the
pre-trained language model. From the novel interpretation of the latent
codebooks and embeddings as conceptual bag-of-words, we propose a new
generative topic model called Topic-VQ-VAE~(TVQ-VAE) which inversely generates
the original documents related to the respective latent codebook. The TVQ-VAE
can visualize the topics with various generative distributions including the
traditional BoW distribution and the autoregressive image generation. Our
experimental results on document analysis and image generation demonstrate that
TVQ-VAE effectively captures the topic context which reveals the underlying
structures of the dataset and supports flexible forms of document generation.
Official implementation of the proposed TVQ-VAE is available at
this https URL

该论文介绍了一种利用隐变量量化自动编码器 (VQ-VAE) 从语言预训练模型中离散地提取丰富信息的新颖主题建模方法，并提出了一种新的生成主题模型 Topic-VQ-VAE (TVQ-VAE)，可以逆向生成与相应隐变量量化编码书相关的原始文档。实验证明，TVQ-VAE 可以有效地捕捉主题上下文，揭示数据集的潜在结构，并支持灵活的文档生成形式。