Published Papers:  

1. Score estimation of monotone partially linear index model (with Taisuke Otsu), Journal of Nonparametric Statistics (2020), 32, 838-863.

2. Empirical likelihood inference for monotone index model (with Taisuke Otsu and Keisuke Takahata), Japanese Journal of Statistics and Data Science (2023), 6, 103-114.

3. Improved estimation of dynamic models of conditional means and variances (with Weining Wang and Jeffrey M. Wooldridge), Journal of Time Series Analysis (2024), 46(3), 458-490.

4. Using generalized estimating equations to estimate nonlinear models with spatial data (with Cuicui Lu, Weining Wang, Jeffrey M. Wooldridge, and Chaowen Zheng), Econometric Reviews (2024), 44, 214-242.

5. GLS under monotone heteroskedasticity (with Yoichi Arai and Taisuke Otsu), Journal of Econometrics (2024), 246(1-2).

6. Nonparametric causal inference with functional covariates (with Daisuke Kurisu and Taisuke Otsu), Journal of Business & Economic Statistics (2025), 1-14.

7. Isotonic propensity score matching (with Taisuke Otsu), Econometric Theory (2025).

8. Nonlinearity in Dynamic Causal Effects: Making the Bad into the Good, and the Good into the Great? (with Toru Kitagawa and Weining Wang), Journal of Business & Economic Statistics (2025), 43(4), 770–777.

Working Papers:

1. Policy choice in time series by empirical welfare maximization (with Toru Kitagawa and Weining Wang).

2. Semiparametric estimation with plug-in isotonic estimator, Current version, JMP version.

3. Semiparametric and nonparametric instrumental variable estimation with first-stage isotonic regression (with Taisuke Otsu and Kazuhiko Shinoda).