2. Identify a target estimand under the model

Based on the causal graph, DoWhy finds all possible ways of identifying a desired causal effect based on the graphical model. It uses graph-based criteria and do-calculus to find potential ways find expressions that can identify the causal effect.

2.1. Supported identification criteria

Back-door criterion
Front-door criterion
Instrumental Variables
Mediation (Direct and indirect effect identification)

Different notebooks illustrate how to use these identification criteria. Check out the Simple Backdoor notebook for the back-door criterion, and the Simple IV notebook for the instrumental variable criterion.