Search Results for author: Yichong Zhang

Found 14 papers, 0 papers with code

Statistical Inference For Noisy Matrix Completion Incorporating Auxiliary Information

no code implementations22 Mar 2024 Shujie Ma, Po-Yao Niu, Yichong Zhang, Yinchu Zhu

This paper investigates statistical inference for noisy matrix completion in a semi-supervised model when auxiliary covariates are available.

Matrix Completion

Robust Inference in Locally Misspecified Bipartite Networks

no code implementations20 Mar 2024 Luis E. Candelaria, Yichong Zhang

Additionally, we introduce bias-aware confidence intervals that account for the effect of the local misspecification.

Adjustment with Many Regressors Under Covariate-Adaptive Randomizations

no code implementations17 Apr 2023 Liang Jiang, Liyao Li, Ke Miao, Yichong Zhang

On the other hand, RAs can degrade estimation efficiency due to their estimation errors, which are not asymptotically negligible when the number of regressors is of the same order as the sample size.

Causal Inference regression

Covariate Adjustment in Experiments with Matched Pairs

no code implementations9 Feb 2023 Yuehao Bai, Liang Jiang, Joseph P. Romano, Azeem M. Shaikh, Yichong Zhang

This paper studies inference on the average treatment effect in experiments in which treatment status is determined according to "matched pairs" and it is additionally desired to adjust for observed, baseline covariates to gain further precision.

Low-rank Panel Quantile Regression: Estimation and Inference

no code implementations20 Oct 2022 Yiren Wang, Liangjun Su, Yichong Zhang

In this paper, we propose a class of low-rank panel quantile regression models which allow for unobserved slope heterogeneity over both individuals and time.

regression

A Conditional Linear Combination Test with Many Weak Instruments

no code implementations22 Jul 2022 Dennis Lim, Wenjie Wang, Yichong Zhang

Under strong identification, our linear combination test has optimal power against local alternatives among the class of invariant or unbiased tests which are constructed based on jackknife AR and LM tests.

Improving Estimation Efficiency via Regression-Adjustment in Covariate-Adaptive Randomizations with Imperfect Compliance

no code implementations31 Jan 2022 Liang Jiang, Oliver B. Linton, Haihan Tang, Yichong Zhang

We investigate how to improve efficiency using regression adjustments with covariates in covariate-adaptive randomizations (CARs) with imperfect subject compliance.

regression

Wild Bootstrap for Instrumental Variables Regressions with Weak and Few Clusters

no code implementations31 Aug 2021 Wenjie Wang, Yichong Zhang

We study the wild bootstrap inference for instrumental variable regressions in the framework of a small number of large clusters in which the number of clusters is viewed as fixed and the number of observations for each cluster diverges to infinity.

Regression-Adjusted Estimation of Quantile Treatment Effects under Covariate-Adaptive Randomizations

no code implementations31 May 2021 Liang Jiang, Peter C. B. Phillips, Yubo Tao, Yichong Zhang

We establish the consistency and limit distribution of the regression-adjusted QTE estimator and prove that the use of multiplier bootstrap inference is non-conservative under CARs.

regression

Unconditional Quantile Regression with High Dimensional Data

no code implementations27 Jul 2020 Yuya Sasaki, Takuya Ura, Yichong Zhang

This paper considers estimation and inference for heterogeneous counterfactual effects with high-dimensional data.

counterfactual regression +1

Bootstrap Inference for Quantile Treatment Effects in Randomized Experiments with Matched Pairs

no code implementations25 May 2020 Liang Jiang, Xiaobin Liu, Peter C. B. Phillips, Yichong Zhang

This paper examines methods of inference concerning quantile treatment effects (QTEs) in randomized experiments with matched-pairs designs (MPDs).

Detecting Latent Communities in Network Formation Models

no code implementations7 May 2020 Shujie Ma, Liangjun Su, Yichong Zhang

This paper proposes a logistic undirected network formation model which allows for assortative matching on observed individual characteristics and the presence of edge-wise fixed effects.

Clustering regression

Informational Content of Factor Structures in Simultaneous Binary Response Models

no code implementations3 Oct 2019 Shakeeb Khan, Arnaud Maurel, Yichong Zhang

Our main findings are that imposing a factor structure yields point identification of parameters of interest, such as the coefficient associated with the endogenous regressor in the outcome equation, under weaker assumptions than usually required in these models.

Estimation of Conditional Average Treatment Effects with High-Dimensional Data

no code implementations6 Aug 2019 Qingliang Fan, Yu-Chin Hsu, Robert P. Lieli, Yichong Zhang

In the first stage, the nuisance functions necessary for identifying CATE are estimated by machine learning methods, allowing the number of covariates to be comparable to or larger than the sample size.

Vocal Bursts Intensity Prediction

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