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pro vyhledávání: '"Chen, Jiafeng"'
Autor:
Chen, Jiafeng
When do linear regressions estimate causal effects in quasi-experiments? This paper provides a generic diagnostic that assesses whether a given linear regression specification on a given dataset admits a design-based interpretation. To do so, we defi
Externí odkaz:
http://arxiv.org/abs/2407.21119
Autor:
Chen, Jiafeng, Andrews, Isaiah
We study batched bandit experiments and consider the problem of inference conditional on the realized stopping time, assignment probabilities, and target parameter, where all of these may be chosen adaptively using information up to the last batch of
Externí odkaz:
http://arxiv.org/abs/2309.12162
Autor:
Chen, Jiafeng
Consider a normal location model $X \mid \theta \sim N(\theta, \sigma^2)$ with known $\sigma^2$. Suppose $\theta \sim G_0$, where the prior $G_0$ has zero mean and unit variance. Let $G_1$ be a possibly misspecified prior with zero mean and unit vari
Externí odkaz:
http://arxiv.org/abs/2303.08653
Publikováno v:
Shanghai yufang yixue, Vol 36, Iss 5, Pp 439-443 (2024)
ObjectiveTo analyze the epidemiological characteristics and etiology of clustered outbreaks of hand, foot, and mouth disease (HFMD) in Pudong New Area, Shanghai from 2017 to 2022, and to provide a scientific basis for the prevention and c
Externí odkaz:
https://doaj.org/article/e8f3c8927c7b4fd896fec42a459891ec
Autor:
Chen, Jiafeng
Empirical Bayes methods usually maintain a prior independence assumption: The unknown parameters of interest are independent from the known standard errors of the estimates. This assumption is often theoretically questionable and empirically rejected
Externí odkaz:
http://arxiv.org/abs/2212.14444
Autor:
Chen, Jiafeng, Roth, Jonathan
When studying an outcome $Y$ that is weakly-positive but can equal zero (e.g. earnings), researchers frequently estimate an average treatment effect (ATE) for a "log-like" transformation that behaves like $\log(Y)$ for large $Y$ but is defined at zer
Externí odkaz:
http://arxiv.org/abs/2212.06080
Will the Opportunity Zones (OZ) program, America's largest new place-based policy in decades, generate neighborhood change? We compare single-family housing price growth in OZs with price growth in areas that were eligible but not included in the pro
Externí odkaz:
http://arxiv.org/abs/2204.06967
Autor:
Chen, Jiafeng
Publikováno v:
Econometrica 91 (2023) 465-491
This paper notes a simple connection between synthetic control and online learning. Specifically, we recognize synthetic control as an instance of Follow-The-Leader (FTL). Standard results in online convex optimization then imply that, even when outc
Externí odkaz:
http://arxiv.org/abs/2202.08426
Publikováno v:
In Science of the Total Environment 20 October 2024 948
Autor:
Qin, Rongxing, Liang, Xiaojun, Yang, Yue, Chen, Jiafeng, Huang, Lijuan, Xu, Wei, Qin, Qingchun, Lai, Xinyu, Huang, Xiaoying, Xie, Minshan, Chen, Li
Publikováno v:
In Heliyon 15 September 2024 10(17)