Are Ensemble Classifiers Powerful Enough for the Detection and Diagnosis of Intermediate-Severity Faults?

• URL: http://arxiv.org/abs/2007.03167v2
• Date: Wed, 8 Jul 2020 23:48:06 GMT
• Title: Are Ensemble Classifiers Powerful Enough for the Detection and Diagnosis of Intermediate-Severity Faults?
• Authors: Baihong Jin, Yingshui Tan, Yuxin Chen, Kameshwar Poolla, Alberto Sangiovanni Vincentelli
• Abstract summary: Intermediate-Severity (IS) faults present milder symptoms compared to severe faults. The lack of IS fault examples in the training data can pose severe risks to Fault Detection and Diagnosis (FDD) methods. We discuss how to design more effective ensemble models for detecting and diagnosing IS faults.
• Score: 9.1591191545173
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Intermediate-Severity (IS) faults present milder symptoms compared to severe faults, and are more difficult to detect and diagnose due to their close resemblance to normal operating conditions. The lack of IS fault examples in the training data can pose severe risks to Fault Detection and Diagnosis (FDD) methods that are built upon Machine Learning (ML) techniques, because these faults can be easily mistaken as normal operating conditions. Ensemble models are widely applied in ML and are considered promising methods for detecting out-of-distribution (OOD) data. We identify common pitfalls in these models through extensive experiments with several popular ensemble models on two real-world datasets. Then, we discuss how to design more effective ensemble models for detecting and diagnosing IS faults.

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