arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.00265cs.LG
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生成模型简介

A Brief Introduction to Generative Models

Alex Lamb

摘要:

我们介绍和激励生成建模作为机器学习的中心任务,并提供了一个关键的观点,已经提出了解决这个任务的算法。我们概述了生成建模如何在数学上定义为试图使估计分布与未知的地面真值分布相同。这可以通过两个分布之间的统计差异值来量化。我们概述了最大似然方法,以及它如何可以被解释为最小化KL分歧。我们探讨了最大似然家庭的一些方法,同时讨论了它们的局限性。最后,我们探讨了另一种对抗性方法,该方法涉及研究估计分布和真实数据分布之间的差异。我们讨论了这种方法如何产生新的分歧和方法,这些都是成功进行对抗性学习所必需的。我们还讨论了对抗方法所需的新的评估指标。

英文摘要:

We introduce and motivate generative modeling as a central task for machine learning and provide a critical view of the algorithms which have been proposed for solving this task. We overview how generative modeling can be defined mathematically as trying to make an estimating distribution the same as an unknown ground truth distribution. This can then be quantified in terms of the value of a statistical divergence between the two distributions. We outline the maximum likelihood approach and how it can be interpreted as minimizing KL-divergence. We explore a number of approaches in the maximum likelihood family, while discussing their limitations. Finally, we explore the alternative adversarial approach which involves studying the differences between an estimating distribution and a real data distribution. We discuss how this approach can give rise to new divergences and methods that are necessary to make adversarial learning successful. We also discuss new evaluation metrics which are required by the adversarial approach.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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