# Probabilistic Contact Tracing **Entity class:** Epidemiological And Ideological-Transmission Bridge concept **Probabilistic Contact Tracing** is a network-epidemiological concept for describing propagation, reinforcement, or exposure across connected populations. Probabilistic Contact Tracing belongs in the ontology because AI can compute over this structure while analysts retain responsibility for interpretation and authorized action. ## Counterterrorism predictive-graph role The epidemiological vocabulary is a formal model of network-mediated propagation and reinforcement. It does not make an idea a biological pathogen or every exposed person an adopter. The analytic state should distinguish ground truth, observed evidence, inferred state, and predicted state. ## Relationships - **domain router:** [[wiki/Network Epidemiology|Network Epidemiology]]. - **ontology neighbors:** [[wiki/Digital Contact Tracing|Digital Contact Tracing]] and [[wiki/Transmission Network|Transmission Network]]. - **synthesis:** [[wiki/Counterterrorism Predictive Graph|Counterterrorism Predictive Graph]] and [[wiki/Predictive Intelligence Loop|Predictive Intelligence Loop]]. ## Sources - [National Institute of Justice — Five Things About the Role of Social Networks in Domestic Radicalization, December 2023](https://nij.ojp.gov/topics/articles/five-things-about-role-social-networks-domestic-radicalization) - [Mason Youngblood — Extremist ideology as a complex contagion, July 31, 2020](https://www.nature.com/articles/s41599-020-00546-3) **As of:** 2026-09-23