1. Efficient modeling of higher-order dependencies in networks: from algorithm to application for anomaly detection
- Author
-
Mandana Saebi, Jian Xu, Lance M. Kaplan, Bruno Ribeiro, and Nitesh V. Chawla
- Subjects
Higher-order network ,Dynamic network ,Anomaly detection ,Sequential data ,Computer applications to medicine. Medical informatics ,R858-859.7 - Abstract
Abstract Complex systems, represented as dynamic networks, comprise of components that influence each other via direct and/or indirect interactions. Recent research has shown the importance of using Higher-Order Networks (HONs) for modeling and analyzing such complex systems, as the typical Markovian assumption in developing the First Order Network (FON) can be limiting. This higher-order network representation not only creates a more accurate representation of the underlying complex system, but also leads to more accurate network analysis. In this paper, we first present a scalable and accurate model, BuildHON+, for higher-order network representation of data derived from a complex system with various orders of dependencies. Then, we show that this higher-order network representation modeled by BuildHON+ is significantly more accurate in identifying anomalies than FON, demonstrating a need for the higher-order network representation and modeling of complex systems for deriving meaningful conclusions.
- Published
- 2020
- Full Text
- View/download PDF