dm.cs.tu-dortmund.de/mlbits/outlier-scores-and-ensembles/
Scores and Ensembles – Lecture Notes
distance function, \(k\) , …
LOF scores for inliers are \(\approx 1\)
LOF scores for outliers: larger than 1, but how large? Large can be 3, 1.3, 1.01…
Several ideas for score normalization:
Fit mixture models [...] probability, assuming a Gaussian score distribution
Standardization (scaling to standard deviation = 1) [ NgAnGo10 ]
Regularization and scaling based on the score distribution [ KKSZ11 ; SWZK12 ]
Additional …