Ph.D. Statistics.
Affiliations:
Project Assistant Professor at Komaba Institute for Science, University of Tokyo, Department of Basic Science, Graduate School of Arts and Science (Imaizumi-lab)
Visiting Scientist at RIKEN Center for Advanced Intelligence Project, High-Dimensional Causal Analysis Team
Before joining the University of Tokyo/RIKEN, I completed my Ph.D. in Statistics at Rutgers University and I am very fortunate to be advised by Professor Min-ge Xie. I also received B. A. in Economics at Kyoto University and M.A. in Economics (Statistics) at University of Tokyo.
E-mail: hirofumi-ota (at) g.ecc.u-tokyo.ac.jp
(previous email address "ho105 (at) stat.rutgers.edu" and "ho105 (at) rutgers.edu" are no longer in use).
Recent research themes:
My primary research interest is constructing performance-guaranteed methods for statistical inference in modern data science, where we basically cannot apply some classical theory such as the central limit theorems. I am also working on the selective inference problems.
(i) modern uncertainty quantification
selective inference
irregular inference problems (discrete, non-numerical parameters)
conformal inference, repro samples method, universal inference, likelihood-free inference, etc.
(ii) E-values/E-processes
theory, method and applications to modern ML
sequential decision making under uncertainty
information aggregation
(iii) robust statistics
quantitative outlier detection and inference
robust and high-dimensional regression
robust estimation and inference under latent permutations
(iv) econometrics
quantile models
non-standard asymptotics
Honors and Awards:
Best presentation award at the Conference of Japan Statistical Society, 2025
Truman-Koehler Scholarship/Excellence Award (Rutgers University, USA)
Grant-in-Aid for JSPS Fellows (DC1, Japan)
Reviewing services:
Electronic Journal of Statistics, Journal of Computational and Graphical Statistics, Journal of Time Series Analysis, Annals of Institute of Statistical Mathematics, Econometric Reviews, Scandinavian Journal of Statistics.
Other professional experiences:
Office of Statistical Consulting (Department of Statistics, Rutgers University) -- consulting services on statistical theory and methodology for companies, researchers, and students.