Search Results for author: Ziwei Mei

Found 5 papers, 3 papers with code

Uniform Inference for Nonlinear Endogenous Treatment Effects with High-Dimensional Covariates

1 code implementation12 Oct 2023 Qingliang Fan, Zijian Guo, Ziwei Mei, Cun-Hui Zhang

In this paper, we propose new estimation and inference procedures for nonparametric treatment effect functions with endogeneity and potentially high-dimensional covariates.

Nickell Bias in Panel Local Projection: Financial Crises Are Worse Than You Think

1 code implementation27 Feb 2023 Ziwei Mei, Liugang Sheng, Zhentao Shi

Local Projection is widely used for impulse response estimation, with the Fixed Effect (FE) estimator being the default for panel data.

regression Time Series Analysis

On LASSO for High Dimensional Predictive Regression

no code implementations14 Dec 2022 Ziwei Mei, Zhentao Shi

This paper examines LASSO, a widely-used $L_{1}$-penalized regression method, in high dimensional linear predictive regressions, particularly when the number of potential predictors exceeds the sample size and numerous unit root regressors are present.

regression Time Series +2

The boosted HP filter is more general than you might think

no code implementations20 Sep 2022 Ziwei Mei, Peter C. B. Phillips, Zhentao Shi

The global financial crisis and Covid recession have renewed discussion concerning trend-cycle discovery in macroeconomic data, and boosting has recently upgraded the popular HP filter to a modern machine learning device suited to data-rich and rapid computational environments.

Time Series Time Series Analysis +1

A Heteroskedasticity-Robust Overidentifying Restriction Test with High-Dimensional Covariates

1 code implementation30 Apr 2022 Qingliang Fan, Zijian Guo, Ziwei Mei

The theoretical power based on the maximum norm is shown to be higher than that in the modified Cragg-Donald test (Koles\'{a}r, 2018), which is the only existing test allowing for large-dimensional covariates.

Vocal Bursts Intensity Prediction

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