Anomaly Detection

  1. Proximity-Based Anomaly Detection Methods
    1. Distance-Based Approaches
      1. K-Nearest Neighbors Methods
        1. Distance Metrics
          1. Euclidean Distance
            1. Manhattan Distance
              1. Mahalanobis Distance
                1. Cosine Distance
                  1. Hamming Distance
                  2. Outlier Score Calculation
                    1. K-th Nearest Neighbor Distance
                      1. Average K-NN Distance
                        1. Median K-NN Distance
                        2. Parameter Selection
                          1. Choosing K Value
                            1. Distance Threshold Selection
                          2. Global Distance-Based Methods
                            1. Distance Thresholding
                              1. Relative Distance Methods
                                1. Distance Distribution Analysis
                              2. Density-Based Approaches
                                1. Local Outlier Factor
                                  1. Local Reachability Density
                                    1. LOF Score Calculation
                                      1. Parameter Selection
                                        1. Interpretation Guidelines
                                        2. Connectivity-Based Outlier Factor
                                          1. Chaining Distance
                                            1. COF Score Computation
                                              1. Comparison with LOF
                                              2. Clustering-Based Density Methods
                                                1. DBSCAN for Anomaly Detection
                                                  1. Core Points Identification
                                                    1. Border Points Analysis
                                                      1. Noise Points as Anomalies
                                                        1. Parameter Tuning
                                                        2. OPTICS Algorithm
                                                          1. Reachability Plots
                                                            1. Cluster Extraction
                                                              1. Outlier Identification
                                                            2. Advanced Density Methods
                                                              1. Local Correlation Integral
                                                                1. Histogram-Based Local Outlier Factor
                                                                  1. Influenced Outlierness

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                                                              3. Statistical Methods for Anomaly Detection

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                                                              5. Machine Learning-Based Anomaly Detection