Evaluation of Input Presentation in Transfer Learning for Bearing Fault Detection
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Abstract
Transfer learning is a promising technique to overcome data insufficiency, a noticeable barrier to real-world application of intelligent maintenance solutions. Although the importance of data preparation and preprocessing is widely acknowledged, no study in particular has investigated the effect of vibration data input presentations on transferability capabilities. This study aims to fill in this gap by conducting experiments across three benchmark datasets to evaluate direct transfer, catastrophic forgetting and data efficiency for bearing fault classification. Moreover, we explore the opportunity to employ source model pseudo-labeling to reduce the need for data labeled by human experts. Our findings show that not only does the choice of preprocessing pipeline significantly affect target-set performance, but also that the vulnerability to catastrophic forgetting varies accordingly. Thus, we conclude that finding the right data processing routine is also a key component in achieving supreme transfer learning performance and, indeed, it deserves more attention. The code base of this study is open-sourced and made publicly available to support reproducibility, transparency, and further research.
How to Cite
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Transfer Learning, Input Representation, Vibration Analysis, Intelligent Fault Detection, Bearing Fault Detection
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