Okuno Akifumi 奥野彰文

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奥野彰文オクノアキフミ

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Researcher Number	40897972
Other IDs
Affiliation (Current)	2025: 統計数理研究所, 統計基盤数理研究系, 助教
Affiliation (based on the past Project Information) *help	2025: 統計数理研究所, 統計基盤数理研究系, 助教 2023: 統計数理研究所, 統計基盤数理研究系, 助教 2021 – 2022: 統計数理研究所, 統計思考院, 助教
Review Section/Research Field	Principal Investigator Basic Section 60030:Statistical science-related / Sections That Are Subject to Joint Review: Basic Section60030:Statistical science-related , Basic Section61030:Intelligent informatics-related / Basic Section 61030:Intelligent informatics-related
Keywords	Principal Investigator ノンパラメトリック統計 / 関連性データ解析 / 収束レート / 不確実性 / 汎化ギャップ / 過剰パラメータ / 確率的最適化 / ニューラルネット

複雑な予測モデルの厳密な事後分布計算手法の確立とその応用Principal Investigator
- Principal Investigator
  
  奥野彰文
- Project Period (FY)
  2025 – 2028
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 60030:Statistical science-related
  Basic Section 61030:Intelligent informatics-related
  Sections That Are Subject to Joint Review: Basic Section60030:Statistical science-related , Basic Section61030:Intelligent informatics-related
- Research Institution
  The Institute of Statistical Mathematics
属性付き関係データ解析のための予測モデルの検討と不確実性評価法の構築Principal Investigator
- Principal Investigator
  
  奥野彰文
- Project Period (FY)
  2021 – 2024
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 60030:Statistical science-related
- Research Institution
  The Institute of Statistical Mathematics

All 2024 2023 2022 2021

All Journal Article Presentation

[Journal Article] Minimizing robust density power-based divergences for general parametric density models2024
- Author(s)
  Akifumi Okuno
- Journal Title
  
  Annals of the Institute of Statistical Mathematics
  
  Volume: - Issue: 5 Pages: 851-875
- DOI
  10.1007/s10463-024-00906-9
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21K17718
[Journal Article] Minimax Analysis for Inverse Risk in Nonparametric Planer Invertible Regression2024
- Author(s)
  Akifumi Okuno, Masaaki Imaizumi
- Journal Title
  
  Electronic Journal of Statistics
  
  Volume: 18 Issue: 1 Pages: 355-394
- DOI
  10.1214/23-ejs2202
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-21K17718, KAKENHI-PROJECT-21K11780
[Journal Article] Autoregressive With Slack Time Series Model for Forecasting a Partially-Observed Dynamical Time Series2024
- Author(s)
  Akifumi Okuno, Yuya Morishita, Yoh-ichi Mototake
- Journal Title
  
  IEEE Access
  
  Volume: 12 Pages: 24621-24630
- DOI
  10.1109/access.2024.3365724
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-21K17718, KAKENHI-PROJECT-22K13979, KAKENHI-PROJECT-23K28150
[Journal Article] An Interpretable Neural Network-based Nonproportional Odds Model for Ordinal Regression2024
- Author(s)
  Akifumi Okuno, Kazuharu Harada
- Journal Title
  
  Journal of Computational and Graphical Statistics
  
  Volume: - Issue: 4 Pages: 1-10
- DOI
  10.1080/10618600.2024.2321208
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21K17718, KAKENHI-PROJECT-22K21286
[Journal Article] Dependence of variance on covariate design in nonparametric link regression2023
- Author(s)
  Okuno Akifumi、Yano Keisuke
- Journal Title
  
  Statistics & Probability Letters
  
  Volume: 193 Pages: 109716-109716
- DOI
  10.1016/j.spl.2022.109716
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19K20222, KAKENHI-PROJECT-21K17718
[Journal Article] A generalization gap estimation for overparameterized models via the Langevin functional variance2023
- Author(s)
  Okuno Akifumi、Yano Keisuke
- Journal Title
  
  Journal of Computational and Graphical Statistics
  
  Volume: 1 Issue: 4 Pages: 1-20
- DOI
  10.1080/10618600.2023.2197488
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K20222, KAKENHI-PROJECT-21K17718, KAKENHI-PROJECT-21K12067, KAKENHI-PROJECT-23K11024
[Journal Article] Finding r-II Sibling Stars in the Milky Way with the Greedy Optimistic Clustering Algorithm2023
- Author(s)
  Hattori Kohei、Okuno Akifumi、Roederer Ian U.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 946 Issue: 1 Pages: 48-48
- DOI
  10.3847/1538-4357/acb93b
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K13965, KAKENHI-PROJECT-21K17718, KAKENHI-PUBLICLY-21H00053
[Journal Article] A Study on Regression and Loss Functions for Multiscale k-Nearest Neighbour2021
- Author(s)
  操瑞行、田中卓磨、奥野彰文、下平英寿
- Journal Title
  
  Proceedings of the Annual Conference of JSAI
  
  Volume: JSAI2021 Issue: 0 Pages: 1G4GS2c01-1G4GS2c01
- DOI
  10.11517/pjsai.JSAI2021.0_1G4GS2c01
- NAID
  130008051520
- Language
  Japanese
- Data Source
  KAKENHI-PROJECT-21K17718
[Journal Article] Extreme Multi-Label Classification of Images via Multiscale k-Nearest Neighbour2021
- Author(s)
  田中卓磨、奥野彰文、下平英寿
- Journal Title
  
  Proceedings of the Annual Conference of JSAI
  
  Volume: JSAI2021 Issue: 0 Pages: 3G1GS2g03-3G1GS2g03
- DOI
  10.11517/pjsai.JSAI2021.0_3G1GS2g03
- NAID
  130008051853
- Language
  Japanese
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] Optimal nonparametric classification via radial distance2023
- Author(s)
  Akifumi Okuno, Ruixing Cao, Kei Nakagawa, and Hidetoshi Shimodaira
- Organizer
  16th International Conference of the ERCIM WG on Computational and Methodological Statistics (CMStatistics 2023)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] 誤差の大きなデータに対するクラスタリング手法と天文学データへの応用2023
- Author(s)
  服部公平、奥野彰文
- Organizer
  統計関連学会連合大会2023
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] 非線形モデルの学習での高次変動正則化2023
- Author(s)
  奥野彰文
- Organizer
  核融合プラズマ学会2023
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] ニューラルネットを用いた解釈可能な非平行連続順序回帰モデルの提案2023
- Author(s)
  奥野彰文、原田和治
- Organizer
  統計関連学会連合大会2023
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] 一般の確率モデルに対するロバストダイバージェンスの最小化2023
- Author(s)
  奥野彰文
- Organizer
  情報論的学習理論ワークショップ2023
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] A stochastic optimization approach to minimize robust density power-based divergences for general parametric density models2023
- Author(s)
  Akifumi Okuno
- Organizer
  ISI-ISM-ISSAS meeting
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] Statistical estimation with integral-based loss functions2023
- Author(s)
  Akifumi Okuno
- Organizer
  International Symposium on Recent Advances in Theories and Methodologies for Large Complex Data
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] 局所動径回帰を用いた最適なノンパラメトリック分類と株価予測への応用2023
- Author(s)
  奥野彰文、操瑞行、中川慧、下平英寿
- Organizer
  統計関連学会連合大会2023
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] Minimax Analysis for Inverse Risk in Nonparametric Invertible Regression2022
- Author(s)
  Akifumi Okuno
- Organizer
  The 6th RIKEN-IMI-ISM-NUS-ZIB-MODAL-NHR Workshop on Advances in Classical and Quantum Algorithms for Optimization and Machine Learning
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] ランジュバン動力学を用いた過剰パラメータモデルの汎化ギャップ推定2022
- Author(s)
  奥野彰文
- Organizer
  統計関連学会連合大会
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] A Greedy and Optimistic Approach to Clustering with a Specified Uncertainty of Covariates2022
- Author(s)
  奥野彰文
- Organizer
  統計関連学会連合大会
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] On estimating generalization gaps via the functional variance in overparameterized models2021
- Author(s)
  Yano, Keisuke and Okuno, Akifumi
- Organizer
  International Conference of the ERCIM WG on Computational and Methodological Statistics
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] Nonparametric Link Regression and Its Theoretical Properties2021
- Author(s)
  Okuno, Akifumi and Yano, Keisuke
- Organizer
  International Conference on Econometrics and Statistics
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] ノンパラメトリックリンク回帰における漸近分散の共変量依存性2021
- Author(s)
  奥野彰文, 矢野恵佑
- Organizer
  統計関連学会連合大会
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] マルチスケール k-近傍法における外挿モデルの検討2021
- Author(s)
  Cao, Ruixing, 田中卓磨 , 奥野彰文, 下平英寿
- Organizer
  統計関連学会連合大会
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] Time-contrastive learning を用いた多次元十分統計量を持つ指数型分布族情報源の非線形独立成分分析2021
- Author(s)
  Jiang, Xinheng, 奥野彰文, 下平英寿
- Organizer
  情報論的学習理論と機械学習ワークショップ
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] 汎関数分散を用いた過剰パラメータモデルの汎化誤差推定2021
- Author(s)
  奥野彰文, 矢野恵佑
- Organizer
  情報論的学習理論と機械学習ワークショップ
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] Nonparametric Invertible Regression Between Closed Hypercubes2021
- Author(s)
  奥野彰文, 今泉允聡
- Organizer
  情報論的学習理論と機械学習ワークショップ
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] ランジュバン動力学を用いた過剰パラメータモデルの汎化ギャップ推定2021
- Author(s)
  奥野彰文
- Organizer
  第6回統計・機械学習若手シンポジウム
- Invited
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] Estimation of Invertible Functions2021
- Author(s)
  Okuno, Akifumi
- Organizer
  ISI-ISM-ISSAS Joint Conference 2022
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K17718
[Presentation] Minimax Analysis for Inverse Risk in Nonparametric Planer Invertible Regression2021
- Author(s)
  Imaizumi, Masaaki and Okuno, Akifumi
- Organizer
  International Conference of the ERCIM WG on Computational and Methodological Statistics
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K17718

1. 矢野恵佑

# of Collaborated Projects: 0 results

# of Collaborated Products: 2 results
2. 服部公平

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

Okuno Akifumi 奥野 彰文

奥野 彰文 オクノ アキフミ

Research Projects

Research Products

Co-Researchers

複雑な予測モデルの厳密な事後分布計算手法の確立とその応用Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

属性付き関係データ解析のための予測モデルの検討と不確実性評価法の構築Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

[Journal Article] Minimizing robust density power-based divergences for general parametric density models2024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Minimax Analysis for Inverse Risk in Nonparametric Planer Invertible Regression2024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Autoregressive With Slack Time Series Model for Forecasting a Partially-Observed Dynamical Time Series2024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] An Interpretable Neural Network-based Nonproportional Odds Model for Ordinal Regression2024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Dependence of variance on covariate design in nonparametric link regression2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] A generalization gap estimation for overparameterized models via the Langevin functional variance2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Finding r-II Sibling Stars in the Milky Way with the Greedy Optimistic Clustering Algorithm2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] A Study on Regression and Loss Functions for Multiscale k-Nearest Neighbour2021

Author(s)

Journal Title

DOI

NAID

Language

Data Source

[Journal Article] Extreme Multi-Label Classification of Images via Multiscale k-Nearest Neighbour2021

Author(s)

Journal Title

DOI

NAID

Language

Data Source

[Presentation] Optimal nonparametric classification via radial distance2023

Author(s)

Organizer

Data Source

[Presentation] 誤差の大きなデータに対するクラスタリング手法と天文学データへの 応用2023

Author(s)

Organizer

Data Source

[Presentation] 非線形モデルの学習での高次変動正則化2023

Author(s)

Organizer

Data Source

[Presentation] ニューラルネットを用いた解釈可能な非平行連続順序回帰モデルの提案2023

Author(s)

Okuno Akifumi 奥野彰文

奥野彰文オクノアキフミ

[Presentation] 誤差の大きなデータに対するクラスタリング手法と天文学データへの応用2023

[Presentation] 局所動径回帰を用いた最適なノンパラメトリック分類と株価予測への応用2023

[Presentation] マルチスケール k-近傍法における外挿モデルの検討2021