A new form of variational autoencoder (VAE) is developed, in which the joint distribution of data and codes is considered in two (symmetric) forms: ($i$) from observed data fed through the encoder to yield codes, and ($ii$) from latent codes drawn from a simple prior and propagated through the decoder to manifest data. Lower bounds are learned for marginal log-likelihood fits observed data and latent codes. When learning with the variational bound, one seeks to minimize the symmetric Kullback-Leibler divergence of joint density functions from ($i$) and ($ii$), while simultaneously seeking to maximize the two marginal log-likelihoods. To facilitate learning, a new form of adversarial training is developed. An extensive set of experiments is performed, in which we demonstrate state-of-the-art data reconstruction and generation on several image benchmark datasets.

该研究开发了一种新形式的变分自动编码器(VAE)，它在两个（对称的）形式中考虑了数据和代码的联合分布。同时，它使用对称的KL散度最小化方法进行学习，并使用一种新的对抗性训练方法来加速学习。在多项实验中，该研究展示了在数个图像基准数据集上的最新数据重建和生成结果。

对抗对称变分自编码器