Beyond Outlier Detection: LookOut for Pictorial Explanation

• Published in: Machine Learning and Knowledge Discovery in Databases Vol. 11051; pp. 122 - 138
• Main Authors: Gupta, Nikhil, Eswaran, Dhivya, Shah, Neil, Akoglu, Leman, Faloutsos, Christos
• Format: Book Chapter
• Language: English
• Published: Switzerland Springer International Publishing AG 2019; Springer International Publishing
• Series: Lecture Notes in Computer Science
• Subjects: Interpretability; Outlier detection; Pictorial explanation

Why is a given point in a dataset marked as an outlier by an off-the-shelf detection algorithm? Which feature(s) explain it the best? What is the best way to convince a human analyst that the point is indeed an outlier? We provide succinct, interpretable, and simple pictorial explanations of outlyin...