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Araml: A Stable Adversarial Training Framework for Text Generation (arxiv.org)
1 point by sel1 on Aug 22, 2019 | hide | past | pdf | discuss on HN

In plain words: A text generator is trained by weighting sentences drawn near real data with scores from a judge, instead of the usual reinforcement-learning trick that rewards the generator's own samples. This beat the best competing text systems and trained far more steadily.

Abstract · ARAML: A Stable Adversarial Training Framework for Text Generation

Most of the existing generative adversarial networks (GAN) for text generation suffer from the instability of reinforcement learning training algorithms such as policy gradient, leading to unstable performance. To tackle this problem, we propose a novel framework called Adversarial Reward Augmented Maximum Likelihood (ARAML). During adversarial training, the discriminator assigns rewards to samples which are acquired from a stationary distribution near the data rather than the generator's distribution. The generator is optimized with maximum likelihood estimation augmented by the discriminator's rewards instead of policy gradient. Experiments show that our model can outperform state-of-the-art text GANs with a more stable training process.

Pei Ke, Fei Huang, Minlie Huang, Xiaoyan Zhu
arXiv:1908.07195 · cs.CL, cs.LG · submitted Aug 20, 2019
abstract · pdf · html · Accepted by EMNLP 2019

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