Statistics and Data Science Seminar: Heterogeneous Treatment Effects under Network Interference: A Nonparametric Approach Based on Node Connectivity, by Heejong Bong
November 5, 2025
4:15 PM - 5:05 PM
Heejong Bong (Purdue University): Heterogeneous Treatment Effects under Network Interference: A Nonparametric Approach Based on Node Connectivity
In network settings, interference between units makes causal inference more challenging as outcomes may depend on the treatments received by others in the network. Typical estimands in network settings focus on treatment effects aggregated across individuals in the population. We propose a framework for estimating node-wise counterfactual means, allowing for more granular insights into the impact of network structure on treatment effect heterogeneity. We develop a doubly robust and non-parametric estimation procedure, KECENI (Kernel Estimator of Causal Effect under Network Interference), which offers consistency and asymptotic normality under network dependence. The utility of this method is demonstrated through an application to microfinance data, revealing the node-wise impact of network characteristics on treatment effects.
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Date posted
Nov 10, 2025
Date updated
Nov 10, 2025
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