52 citations · 169 across the 24 of their papers we have counts for
7 papers · 1 filter
A Decomposition Analysis of Diffusion Over a Large Network
Kyungchul Song
Diffusion over a network refers to the phenomenon of a change of state of a cross-sectional unit in one period leading to a change of state of its neighbors in the network in the n…
Measuring Diffusion over a Large Network
Xiaoqi He, Kyungchul Song
This paper introduces a measure of the diffusion of binary outcomes over a large, sparse network, when the diffusion is observed in two time periods. The measure captures the aggre…
Estimation and Inference on Treatment Effects Under Treatment-Based Sampling
Kyungchul Song, Zhengfei Yu
Causal inference in a program evaluation setting faces the problem of external validity when the treatment effect in the target population is different from the treatment effect id…
Estimating Local Interactions Among Many Agents Who Observe Their Neighbors
Nathan Canen, Jacob Schwartz, Kyungchul Song
In various economic environments, people observe other people with whom they strategically interact. We can model such information-sharing relations as an information network, and…
Ordering-Free Inference from Locally Dependent Data
Kyungchul Song
This paper focuses on a data-rich environment where the data set has a very large cross-sectional dimension, is likely to exhibit local dependence, and yet is hard to determine the…
Measuring the Graph Concordance of Locally Dependent Observations
Kyungchul Song
This paper introduces a simple measure of a concordance pattern among observed outcomes along a network, i.e., the pattern in which adjacent outcomes tend to be more strongly corre…
Semiparametric Models with Single-Index Nuisance Parameters
Kyungchul Song
In many semiparametric models, the parameter of interest is identified through conditional expectations, where the conditioning variable involves a single-index that is estimated i…