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Explaining Deep Learning Models -- A Bayesian Non-parametric Approach
Wenbo Guo · Sui Huang · Yunzhe Tao · Xinyu Xing · Lin Lin

Tue Dec 04 02:00 PM -- 04:00 PM (PST) @ Room 517 AB #159

Understanding and interpreting how machine learning (ML) models make decisions have been a big challenge. While recent research has proposed various technical approaches to provide some clues as to how an ML model makes individual predictions, they cannot provide users with an ability to inspect a model as a complete entity. In this work, we propose a novel technical approach that augments a Bayesian non-parametric regression mixture model with multiple elastic nets. Using the enhanced mixture model, we can extract generalizable insights for a target model through a global approximation. To demonstrate the utility of our approach, we evaluate it on different ML models in the context of image recognition. The empirical results indicate that our proposed approach not only outperforms the state-of-the-art techniques in explaining individual decisions but also provides users with an ability to discover the vulnerabilities of the target ML models.

Author Information

Wenbo Guo (Pennsylvania State University)
Sui Huang (Netflix)
Yunzhe Tao (Columbia University)
Xinyu Xing (Penn State University)
Lin Lin (The Pennsylvania State University)

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