arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.09161cs.LGcs.AIphysics.app-phstat.ML
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基于标签的深度神经网络隐藏单元多样性度量:一种正则化方法

Label-Based Diversity Measure Among Hidden Units of Deep Neural Networks: A Regularization Method

Tianjin University(天津大学);The Open University(开放大学)

Chenguang Zhang, Yuexian Hou, Dawei Song, Liangzhu Ge, Yaoshuai Yao

摘要:

虽然深层结构保证了深度网络(DNN)强大的表达能力,但它也引发了严重的过拟合问题。为了提高DNN的泛化能力,人们开发了许多策略来提高隐藏单元之间的多样性。然而,大多数这些策略是经验和启发式的,在缺乏多样性度量的理论推导或从多样性到泛化能力的明确联系的情况下。在本文中,从信息论的角度来看,我们引入了一个新的定义冗余描述的多样性隐藏单元下监督学习设置形式化的推广能力的互信息的隐藏层的影响。我们证明了定义的冗余和泛化能力之间存在相反的关系,即,冗余的减少通常提高了泛化能力。实验结果表明,采用冗余度作为正则化算子的DNN能有效地减少过拟合,降低泛化误差,很好地支持了上述观点。

英文摘要:

Although the deep structure guarantees the powerful expressivity of deep networks (DNNs), it also triggers serious overfitting problem. To improve the generalization capacity of DNNs, many strategies were developed to improve the diversity among hidden units. However, most of these strategies are empirical and heuristic in absence of either a theoretical derivation of the diversity measure or a clear connection from the diversity to the generalization capacity. In this paper, from an information theoretic perspective, we introduce a new definition of redundancy to describe the diversity of hidden units under supervised learning settings by formalizing the effect of hidden layers on the generalization capacity as the mutual information. We prove an opposite relationship existing between the defined redundancy and the generalization capacity, i.e., the decrease of redundancy generally improving the generalization capacity. The experiments show that the DNNs using the redundancy as the regularizer can effectively reduce the overfitting and decrease the generalization error, which well supports above points.

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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