Finding Ghosts in Your Data: Anomaly Detection Techniques with Examples in Python

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2022

K. FeaselFinding Ghosts in Your Datahttps://doi.org/10.1007/978-1-4842-8870-2_11

11. Local Correlation Integral (LOCI)

Kevin Feasel¹  

(1)

DURHAM, NC, USA

 

Chapter 10 introduced us to one multivariate clustering technique in Connectivity-Based Outlier Factor (COF). COF is a popular technique for multivariate outlier detection, but it does come with the downside that there is little immediate guidance outside of “higher outlier scores are worse.” We lack solid guidance on what, exactly, represents a sufficiently large outlier score. In this chapter, we introduce a complementary technique to COF that does come with its own in-built guidance: Local Correlation ...