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MSS-PAE: Saving Autoencoder-based Outlier Detection from Unexpected Reconstruction
April 10, 2024, 4:43 a.m. | Xu Tan, Jiawei Yang, Junqi Chen, Sylwan Rahardja, Susanto Rahardja
cs.LG updates on arXiv.org arxiv.org
Abstract: AutoEncoders (AEs) are commonly used for machine learning tasks due to their intrinsic learning ability. This unique characteristic can be capitalized for Outlier Detection (OD). However conventional AE-based methods face the issue of overconfident decisions and unexpected reconstruction results of outliers, limiting their performance in OD. To mitigate these issues, the Mean Squared Error (MSE) and Negative Logarithmic Likelihood (NLL) were first analyzed, and the importance of incorporating aleatoric uncertainty to AE-based OD was elucidated. …
abstract arxiv autoencoder autoencoders cs.lg decisions detection face however intrinsic issue machine machine learning outlier outliers performance results saving tasks type
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