In this paper, we improve Generative Adversarial Networks by incorporating a manifold learning step into the discriminator. We consider locality-constrained linear and subspace-based manifolds, and locality-constrained non-linear manifolds. In our design, the manifold learning and coding steps are intertwined with layers of the discriminator, with the goal of attracting intermediate feature representations onto manifolds. We adaptively balance the discrepancy between feature representations and their manifold view, which represents a trade-off between denoising on the manifold and refining the manifold. We conclude that locality-constrained non-linear manifolds have the upper hand over linear manifolds due to their non-uniform density and smoothness. We show substantial improvements over different recent state-of-the-art baselines.

本文在生成对抗网络中引入流形学习方法来打磨辨别器，考虑局部约束线性和基于子空间的流形以及局部约束的非线性流形，利用流形学习和编码的设计将中间特征表示映射到流形上，并通过协调特征表示和流形视图之间的差异性，实现去噪和流形精细化的两难平衡，并在实验中发现局部约束的非线性流形优于线性流形，性能也明显优于现有的基线算法。

流形学习对GAN的优势