Name 
Research Area 
Satoru Iwata
(Professor) 
Algorithms, Combinatorics, Optimziation 
Fumiyasu Komaki
(Professor) 
Statistics, Prediction Theory, Bayesian Theory, Statistical Modeling, Information Geometry 
Kunihiko Sadakane
(Professor) 
Algorithms and Data Structures, Data Compression, Parallel Algorithms 
Tsuyoshi Takagi
(Professor) 
Information Security, Cryptography, PostQuantum Cryptography, Computational Number Theory 
Takayasu Matsuo
(Professor) 
Numerical Analysis (Differential Equations, Numerical Linear Algebra), Simulations 
Kenji Yamanishi
(Professor) 
Information Theoretic Learning Theory, Machine Learning, Data Mining (Anomaly Detection, Change Analysis), Big data analysis 
Taiji Suzuki
(Associate Professor) 
Machine learning, Mathematical statistics, Learning theory, High
dimensional statistics, Optimization for large scale machine learning 
Tomonari Sei
(Associate Professor) 
Theoretical statistics, Statistical modeling 
Kenichiro Tanaka
(Associate Professor) 
Theoretical Numerical Analysis, Approximation Theory, Numerical algorithm, Numerical methods for finance 
Shinichi Tanigawa
(Associate Professor) 
Discrete Optimization, Discrete and Computational Geometry 
Hiroshi Hirai
(Associate Professor) 
Discrete Mathematics, Combinatorial Optimization 
Kumiko TanakaIshii
(Professor) [RCAST] 
Computational Linguistics, Natural Language Processing,
Mathematical Modeling of Natural Language,
Unsupervesed Machine Learning Methods 
Kazuyuki Aihara
(Professor) [IIS] 
Mathematics for AI, Mathematical Modeling and Nonlinear Analysis for Biological Systems, Chaos Engineering 
Hiroshi Nakagawa
(Professor) [ITC] 
Machine Learning Algorithm and Mathematical Models, Privacy Preserving Data Mining 
Kengo Nakajima
(Professor) [ITC] 
Parallel Numerical Algorithms (Iterative Methods, Preconditioning), HighPerformance Computing, Scientific Computing, LargeScale Visualization 
Takaaki Ohnishi
(Associate Professor) [SICT] 
Big Data Analysis, Econophysics, Sociophysics, Complex Networks, Massively Parallel Computing 
Hiromichi Nagao
(Associate Professor) [ERI] 
Information Fusion for Earthquake and Tsunami Disasters,
Data Assimilation, Sequential Bayesian Filters,
DataDriven Modeling, Sparse Modeling 
Yoshito Hirata
(Project Associate Professor) [IIS] 
Nonlinear time series analysis
(theoretical developments and their applications),
Quantitative cancer research

Hirosuke Yamamoto
(Professor) [Frontier Sciences] 
Information Theory, Communication Theory, Information Security and Cryptology, Data Compression Algorithms 
Noboru Kunihiro
(Associate Professor) [Frontier Sciences] 
Cryptography, Information Security, Quantum Computation 
Takashi Kohno
(Associate Professor) [IIS] 
Neuromorphic and biomimetic systems, Mathematical modeling of neural systems 
Tetsuya Kobayashi
(Associate Professor) [IIS] 
Systems biology, Quantitative biology, Modeling of biological phenomena, Bioimage informatics 
Gouhei Tanaka
(Project Associate Professor) [Engineering] 
Complex systems dynamics, Nanomicro systems 
Yoko Yamaguchi
(Professor) [RIKEN BSI] 
Computational Neuroscience, Brain Dynamics (Theories of Memory and Cognition) 
Kensuke Aishima
(Project Lecturer) 
Numerical Analysis, Numerical Linear Algebra, Recommender system 