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Home Events
High-Dimensional Network Causal Inference
High-Dimensional Network Causal Inference
High-Dimensional Network Causal Inference
High-Dimensional Network Causal Inference
5Jun
Seminar Calendar, Information and Innovation Management

High-Dimensional Network Causal Inference

5 June 2025 | 2:30 p.m. — 3:30 p.m.
KK 1121, K. K. Leung Building, HKU
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SPEAKER

Professor Yingying Fan
Centennial Chair in Business Administration
Professor in Data Sciences and Operations Department
Professor of Economics
Marshall School of Business | University of Southern California School

ABSTRACT

We propose a new method of high-dimensional network causal inference (HNCI) that provides both valid confidence intervals for the average direct treatment effect on the treated (ADET) and valid confidence sets for the neighborhood size affecting the interference effect. We adopt the model framework from Belloni et al. (2022), which has key advantages such as nonparametric modeling of interference effects and allowing certain types of heterogeneity in node interference neighborhood sizes. Utilizing the nested matching property of the network effect, we reformulate the original nonparametric model into a linear regression model where the regression coefficients, corresponding to the underlying true interference function values of nodes, exhibit a latent homogeneous structure. This formulation enables us to leverage existing literature on homogeneity pursuit to conduct valid statistical inferences with theoretical guarantees. The resulting confidence intervals for the ADET are formally justified through asymptotic normality with estimable variances. By employing the repro samples approach, we further provide the confidence set for the interference of neighborhood size with theoretical guarantees. The practical utility of the newly suggested methods is demonstrated through simulations and real data examples.

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214th Congregation (Summer Congregation 2025)
7Jul-8Jul
Faculty Level | Event
214th Congregation (Summer Congregation 2025)
Grand Hall, Centennial Campus, HKU
Semiparametric Identification of the Discount Factor and Payoff Function in Dynamic Discrete Choice Models
Semiparametric Identification of the Discount Factor and Payoff Function in Dynamic Discrete Choice Models
Semiparametric Identification of the Discount Factor and Payoff Function in Dynamic Discrete Choice Models
Semiparametric Identification of the Discount Factor and Payoff Function in Dynamic Discrete Choice Models
Semiparametric Identification of the Discount Factor and Payoff Function in Dynamic Discrete Choice Models
18Jun
Economics | Seminar
Semiparametric Identification of the Discount Factor and Payoff Function in Dynamic Discrete Choice Models
18 June 2025 | 2:15 PM - 3:30 PM
KK 910 K. K. Leung Building, HKU
Prof. Katsumi Shimotsu
High-dimensional knockoffs inference for time series data
About Speaker
Prof. Yingying Fan

Centennial Chair in Business Administration, Professor in Data Sciences and Operations Department, and Professor of Economics | Marshall School of Business, University of Southern California

High-Dimensional Network Causal Inference
5 June 20252:30 p.m. — 3:30 p.m.
KK 1121, K. K. Leung Building, HKU
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