0


具有去噪的自动编码器的提取与组合鲁棒特征

Extracting and Composing Robust Features with Denoising Autoencoders
课程网址: http://videolectures.net/icml08_vincent_ecrf/  
主讲教师: Pascal Vincent
开课单位: 蒙特利尔大学
开课时间: 2008-08-29
课程语种: 英语
中文简介:
先前的研究表明, 学习深层生成模型或判别模型的困难可以通过一个初始的无监督学习步骤来克服, 该步骤将输入映射到有用的迭代表示。我们引入并激励了一种新的培训原则, 基于使学习的表示对输入模式的部分腐败具有鲁棒性的理念, 实现了无监督的表象学习。此方法可用于训练自动编码器, 并且可以堆叠这些去噪自动编码器, 以初始化深层体系结构。该算法可以从多方面的学习和信息理论的角度, 也可以从生成模型的角度来激励。比较实验清楚地表明, 破坏自动编码器在模式分类基准套件上的输入具有令人惊讶的优势。
课程简介: Previous work has shown that the difficulties in learning deep generative or discriminative models can be overcome by an initial unsupervised learning step that maps inputs to useful itermediate representations. We introduce and motivate a new training principle for unsupervised learning of a representation based on the idea of making the learned representations robust to partial corruption of the input pattern. This approach can be used to train autoencoders, and these denoising autoencoders can be stacked to initialize deep architectures. The algorithm can be motivated from a manifold learning and information theoretic perspective or from a generative model perspective. Comparative experiments clearly show the surprising advantage of corrupting the input of autoencoders on a pattern classification benchmark suite.
关 键 词: 无监督学习; 鲁棒性; 自动编码器
课程来源: 视频讲座网
最后编审: 2020-06-03:张荧(课程编辑志愿者)
阅读次数: 64