Programming Language Design, especially Object-Oriented Languages and Functional Languages @ Tokyo Institute of Technology
Frame-based Artificial Languages Design and Lisp-baed Window System Design @NEC
High Performance Symbolic Computing @ Tokyo Institute of Technology
Currently Data Science with Mathematica @ Symbolic Systems
Translation of "Mathematica Cookbook"(O' Reily) into Japanese one published by O'Reily Japan.
Organizing Mathematica Community "Mathematica Cafe" in Japan.