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Authors: Robert Müller ; Steffen Illium ; Fabian Ritz and Kyrill Schmid

Affiliation: Mobile and Distributed Systems Group, LMU Munich, Germany

Keyword(s): Anomaly Detection, Transfer Learning, Machine Health Monitoring.

Abstract: In this work, we thoroughly evaluate the efficacy of pretrained neural networks as feature extractors for anomalous sound detection. In doing so, we leverage the knowledge that is contained in these neural networks to extract semantically rich features (representations) that serve as input to a Gaussian Mixture Model which is used as a density estimator to model normality. We compare feature extractors that were trained on data from various domains, namely: images, environmental sounds and music. Our approach is evaluated on recordings from factory machinery such as valves, pumps, sliders and fans. All of the evaluated representations outperform the autoencoder baseline with music based representations yielding the best performance in most cases. These results challenge the common assumption that closely matching the domain of the feature extractor and the downstream task results in better downstream task performance.

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Paper citation in several formats:
Müller, R.; Illium, S.; Ritz, F. and Schmid, K. (2021). Analysis of Feature Representations for Anomalous Sound Detection. In Proceedings of the 13th International Conference on Agents and Artificial Intelligence - Volume 2: ICAART; ISBN 978-989-758-484-8; ISSN 2184-433X, SciTePress, pages 97-106. DOI: 10.5220/0010226800970106

@conference{icaart21,
author={Robert Müller. and Steffen Illium. and Fabian Ritz. and Kyrill Schmid.},
title={Analysis of Feature Representations for Anomalous Sound Detection},
booktitle={Proceedings of the 13th International Conference on Agents and Artificial Intelligence - Volume 2: ICAART},
year={2021},
pages={97-106},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010226800970106},
isbn={978-989-758-484-8},
issn={2184-433X},
}

TY - CONF

JO - Proceedings of the 13th International Conference on Agents and Artificial Intelligence - Volume 2: ICAART
TI - Analysis of Feature Representations for Anomalous Sound Detection
SN - 978-989-758-484-8
IS - 2184-433X
AU - Müller, R.
AU - Illium, S.
AU - Ritz, F.
AU - Schmid, K.
PY - 2021
SP - 97
EP - 106
DO - 10.5220/0010226800970106
PB - SciTePress

- Science and Technology Publications, Lda.
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