Yamagata Koichi

Yamagata Koichi | Yamagata Koichi

Affiliation and department：
Job title： Associate Professor

Research field (3)： Statistical science , Mathematical physics and basic theory , Applied mathematics and statistics

Research keywords (4)：深層学習 , 情報幾何学 , 量子情報 , 非可換統計

Research theme for competitive and other funds (3)：

Papers (22)：

Koichi Yamagata. Gill and Massar type bound for estimation of SU(2) channel. Physica Scripta. 2024
Akio Fujiwara, Koichi Yamagata. Efficiency of estimators for locally asymptotically normal quantum statistical models. The Annals of Statistics. 2023. 51. 3. 1159-1182
Koichi Yamagata, Koya Kawahara, Yuto Suzuki, Yuki Nakahodo, Shunsuke Ito, Haruka Matsukura, Maki Sakamoto. Neural Network Model for Visualization of Conversational Mood with Four Adjective Pairs. AHFE (2023) International Conference. Emerging Technologies in Healthcare and Medicine. 2023. 116
Koichi Yamagata, Jinhwan Kwon, Takuya Kawashima, Wataru Shimoda, Maki Sakamoto. Computer Vision System for Expressing Texture Using Sound-Symbolic Words. Frontiers in Psychology. 2021. 12(595986). 1-11
K. Yamagata. Maximum logarithmic derivative bound on quantum state estimation as a dual of the Holevo bound. Journal of Mathematical Physics. 2021. 62. 6. 062203-062203

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MISC (4)：

山形浩一. 量子統計における弱収束に基づく局所漸近正規性 (量子系の統計的推測とその幾何学的構造). 数理解析研究所講究録. 2015. 1953. 46-52
Oyama Satoshi, Okamoto Ryo, Ono Takafumi, Takeuchi Shigeki, Yamagata Koichi, Fujiwara Akio. 30aCC-8 Adaptive Quantum State Estimation for Single Quantum Bit. Meeting abstracts of the Physical Society of Japan. 2014. 69. 1. 215-215
Oyama Satoshi, Iefuji Minako, Okamoto Ryo, Yamagata Koichi, Fujiwara Akio, Takeuchi Shigeki. 19aAK-9 Adaptive Measurement for Quantum Phase Estimation II. Meeting abstracts of the Physical Society of Japan. 2012. 67. 2. 141-141
Iefuji Minako, Okamoto Ryo, Yamagata Koichi, Imai Hiroshi, Fujiwara Akio, Takeuchi Shigeki. 22pEB-4 Adaptive Measurement for Quantum Phase Estimation. Meeting abstracts of the Physical Society of Japan. 2011. 66. 2. 151-151

Patents (1)：

Lectures and oral presentations (15)：

A theory of quantum local asymptotic normality, Part II: Asymptotic representation theorem
(Mini Workshop: Recent Advances in Quantum Mathematical Statistics 2023)
Efficiency of estimators for locally asymptotically normal quantum statistical models
(The Mathematical Society of Japan Spring Meeting 2023 2023)
量子推定における漸近理論の最近の進展
(第3回QIQBセミナー 2023)
Efficiency of estimators for locally asymptotically normal quantum statistical models
(The 47th Quantum Information Technology Symposium (QIT47) 2022)
Maximum logarithmic derivative bound on quantum state estimation as a dual of the Holevo bound
(Technical Committee on Information Theory 2022)

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Education (1)：

2010 - 2013 Osaka University Graduate School of Science Department of Mathematics

Professional career (1)：

Work history (9)：

2023/04 - 現在 Kanazawa University Institute of Science and Engineering Associate Professor
2018/04 - 2022/02 The University of Electro-Communications Artificial Intelligence eXploration Research Center
2022/02 - 2023/04 National Institute of Informatics Global Research Center for Quantum Information Science Associate Professor by Special Appointment
2015/04 - 2018/03 Chuo University Faculty of Science and Engineering Department of Information and System Engineering
2014/10 - 2015/03 National Institute of Advanced Industrial Science and Technology

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Awards (1)：

Association Membership(s) (3)：

電子情報通信学会 , 人工知能学会 , 日本数学会

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