Deep Anomaly Detection
Deep anomaly detection aims to identify unusual data points deviating from a learned model of normality, a crucial task across diverse fields. Current research emphasizes robust methods that handle noisy or incomplete data, focusing on architectures like autoencoders, variational autoencoders, and generative adversarial networks, as well as newer approaches leveraging contrastive learning, prototype learning, and causal inference. These advancements improve the accuracy and explainability of anomaly detection, impacting applications ranging from medical image analysis and industrial process monitoring to cybersecurity and fraud detection. A significant ongoing challenge is developing methods that are both effective and robust to various data types and anomaly characteristics, while also addressing issues of fairness and security.