My research interests are on developing theory and algorithms to solve real-world problems. In particular, I have been working on solving optimization problems on networks. Related topics include

- Combinatorial Optimization and Graph Algorithms
- Discrete Mathematics and Combinatorics
- Mathematical modeling
- Operations Research/Management Sciences
- Machine Learning
- Combinatorial Matrix Theory

- Online advertising over a social network
- Designing an energy-efficient sensor network

- JST ERATO Kawarabayashi Large Graph Project [2012.10-2018.03] (see also Facebook page)
- Exploring the Limits of Computation (ELC) [2012.04-2017.03]
- ImPACT R&D Program: Advanced Information Society Infrastructure Linking Quantum Artificial Brains in Quantum Network [2014-2019.03]