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论文类型：会议论文

发表时间：2019-01-01

收录刊物：EI、CPCI-S

页面范围：1502-1507

关键字：neural networks; interpretability; probability density; gaussian distribution

摘要：Currently, most of works about interpretation of neural networks are to visually explain the features learned by hidden layers. This paper explores the relationship between the input units and the output units of neural network from the perspective of probability density. For classification problems, it shows that the probability density function (PDF) of the output unit can be expressed as a mixture of three Gaussian density functions whose mean and variance are related to the information of the input units, under the assumption that the input units are independent of each other and obey a Gaussian distribution. The experimental results show that the theoretical distribution of the output unit is basically consistent with the actual distribution.