Stacked Autoencoders for Outlier Detection in Over-the-Horizon Radar Signals

<div>(Best viewed in color) comparison of OPTICS outputs over the same time instance, setting as minimum cluster size (a) 20 and (b) 26 ships. Stacked autoencoders result in more clusters than PCA or raw data that implies more peaks in the signal, which leads to more outliers’ detection.</div>

Computational Intelligence and Neuroscience

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Figure 11

Figure 11: Stacked Autoencoders for Outlier Detection in Over-the-Horizon Radar Signals 