Mitsuhiro Toriumi is a senior researcher at the Japan Agency for Marine–Earth Science and Technology (JAMSTEC) and an emeritus professor of The University of Tokyo. He is also an advisor of the National Institute of Fusion Science and was the Japan Science and Technology Agency. He was the scientific director of the Institute for Research on Earth Evolution (IFREE) in JAMSTEC from 2011 to 2013. He was a professor of complexity earth science, petrology, and structural geology at The University of Tokyo from 1991 to 2011. His research interests include metamorphic petrology, structural geology, rheology in the earth interior, global seismicity dynamics, and neural network modeling. He has published several books of earth sciences (global seismicity dynamics, data-driven science, neural network modeling of seismicity, and geochemical mechanics) in English.