Data Mining
Anomaly Detection
Lecture Notes for Chapter 9
Introduction to Data Mining
by
Tan, Steinbach, Kumar
© Tan,Steinbach, Kumar Introduction to Data Mining 4/18/2004 *
Anomaly/Outlier Detection
Importance of Anomaly Detection
Ozone Depletion History
Anomaly Detection
Anomaly Detection Schemes
Statistical Approaches
Grubbs’ Test
Statistical-based – Likelihood Approach
Limitations of Statistical Approaches
Distance-based Approaches
Nearest-Neighbor Based Approach
Outliers in Lower Dimensional Projection
Clustering-Based
Base Rate Fallacy in Intrusion Detection