— In this article, we will examine which anomaly detection methods are currently used in practice, how to select the appropriate model, and ensure its interpretability.
An anomaly is a statistically significant deviation from a previously recorded norm.
Anomaly classification:
⏺Point anomalies – single events that significantly deviate from the normal pattern;
⏺Contextual anomalies – events that are considered normal in one context and abnormal in another;
⏺Collective anomalies – a collection of individual actions that are not anomalous in themselves, but collectively indicate suspicious activity.