Takahiro Onizuka

• Lecturer, Graduate School of Social Sciences, Chiba University

1-33, Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan

• Email: onizuka [at] chiba-u.jp

Papers

Published and Accepted Papers

1. Onizuka, T., Hashimoto, S. (2025), Robust Bayesian graphical modeling using gamma-divergence. Journal of Multivariate Analysis, 209, 105461. (arXiv:2312.07262, publication)

2. Onizuka, T., Hashimoto, S. and Sugasawa, S. (2024), Locally Adaptive Spatial Quantile Smoothing: Application to Monitoring Crime Density in Tokyo. Spatial Statistics, 59, 100793. (arXiv:2202.09534, publication)

3. Onizuka, T., Iwashige, F. and Hashimoto, S. (2024), Bayesian Boundary Trend Filtering. Computational Statistics and Data Analysis, 191, 107889. (arXiv:2304.11491, publication)

4. Onizuka, T., Hashimoto, S. and Sugasawa, S. (2024), Fast and Locally Adaptive Bayesian Quantile Smoothing using Calibrated Variational Approximations. Statistics and Computing, 34, 15. (arXiv:2211.04666, publication)

5. Hamura, Y., Onizuka, T., Hashimoto, S. and Sugasawa, S. (2024), Sparse Bayesian Inference on Gamma-Distributed Observations Using Shape-Scale Inverse-Gamma Mixtures. Bayesian Analysis, 19 (1), 77-97. (arXiv:2203.08440, publication)

Working Papers

1. Hamura, Y., Onizuka, T., Hashimoto, S. and Sugasawa, S. (2025), Robust Bayesian Inference for Censored Survival Models. arXiv preprint. (arXiv:2504.11147)

International Conference Presentations

1. Onizuka, T. Locally adaptive Bayesian spatiotemporal conditional autoregressive model. EAC-ISBA conference 2025, 2025/7/4.

2. Onizuka, T., Solvang, H., Oien, N. and Yanagihara, H. Spatio-temporal additive model via spatial clustering and the application for the body condition analysis of common minke whales (Balaenoptera acutorostrata acutorostrata) in the Northeast Atlantic. IMS-APRM 2024, 2024/1/7.

3. Onizuka, T., Hashimoto, S. and Sugasawa, S. Bayesian quantile trend filtering on graphs. The 6th EAC-ISBA conference, 2022/7/7.

Profile

• 2024.10 – present: Lecturer, Chiba University

• 2024.09:  Ph.D. (Science): Graduate School of Advanced Science and Engineering, Hiroshima University

• 2022.03   MA (Science): Graduate School of Advanced Science and Engineering, Hiroshima University

• 2020.03   BA (Science): Department of Mathematics, Hiroshima University