Index

The Yamashita research group was born October 2012.
The Yamashita research group enjoys studying Mathematical optimization
(in particular, continuous optimization and nonlinear optimization).

1. Research Interest
2. Research Topic
3. Current Members and Their Research
4. When you want to join us

1. Research Interest

Research topic of the Yamashita research group is Mathematical Optimization. The objective of Mathematical Optimization is "to find the best solution among available candidates." Then, the key-phrase of our group would be
■a mathematical approach to pursue the best.
If you are interested in our research, please feel free to contact us.

2. Research Topic

The keywords of our research group are

□ Mathematical Optimization
□ Continuous Optimization
□ Nonlinear Optimization
□ Semidefinite Programs
□ Symmetric Cone Programs

Our direction is to solve larger-scale optimization problems in shorter time with higher accuracy . We study both mathematical framework and software implementation.

3. Current Members and Their Research

□ Makoto YAMASHITA, Professor, His research can be found in his homepage http://www.opt.comp.isct.ac.jp/yamashita/.
□ Tianxiang LIU, Assistant Professor, Her research can be found in her homepage https://sites.google.com/view/tianxiangmath.
□ Xiangyu YANG (from China), Post Doctor, His research is stochastic optimization and log-det semidefinite programming. He is an assistant professor at Henan University and stays in our group as a post doctor.
□ Charles NAMCHAISIRI (from Thailand), PhD student, His research is spectral projected gradient for log-det semidefinite programming.
□ Yuta ISOTANI, Master student (2nd year), His research is an optimization method on manifold.
□ Ryoga MASAKI, Master student (2nd year), His research is log-det semidefinite programming.
□ Kohei MIYATA, Master student (2nd year), His research is a drone routing problem.
□ Xiaoyu BAO (from China), Master student (1st year), She is seeking a new research direction.
□ Tomoaki KAWASUMI, Master student (1st year), His research is optimization methods related to quantum algorithms.
□ Masataka HATAO, Master student (1st year), He is seeking a new research direction.
□ Ryotaro MIURA, Master student (1st year), His research is an optimization method on manifold.
□ Konosuke KAKOI, Undergraduate student (4th year), He is seeking a new research direction.
□ Kenya SAEGUSA, Undergraduate student (4th year), He is seeking a new research direction.
□ Ryoya NANBARA, Undergraduate student (4th year), He is seeking a new research direction.
□ Yu CHINEN, Undergraduate student (3rd year, B2D program), He is seeking a new research direction.

4. When you want to join us

When you want to join us as a master or PhD student, please first contact us by e-mail in http://www.opt.comp.isct.ac.jp/yamashita/. We will discuss whether your research interest matches our direction. If foreign students attend our group (even one student), we will have some seminars in English. We expect you to have studied the basic knowledge of Linear Programs, Linear Algebra, Convex Analysis, Computer Programming (like C or MATLAB) and English conversation.
However, the most important thing is your mind to enjoy studying Mathematical Optimization.

When you want to enroll Tokyo-Tech as a student, please check
the webpage of International Graduate Program (C) http://www.titech.ac.jp/english/graduate_school/international/graduate_program_c/index.html
and
the webpage of International Exchange Students http://www.titech.ac.jp/english/graduate_school/international/exchange/index.html

5. Old Members and Their Research

□ Takumi ITO, Master of Science (2024, March), His research is bilevel optimization.
□ Yuta SAKAI, Master of Science (2024, March), His research is semidefinite programming and interior-point methods.
□ Eisuke NISHIHARA, Master of Science (2024, March), His research is a quantum mote-carlo approach.
□ Hiroki MARUMO, Master of Science (2024, March), His research is polynomial optimization problems with third-order tensors.
□ Shinji SUGAWA, Research student, His research is QRAC (Quantum Random Access Code).
□ Xiaowei CHEN (from China), Master of Science (2023, September), Her research is scheduling for operation rooms.
□ Yueyang ZHANG (from China), Master of Science (2023, September), Her research is an optimization algorithm for nonconvex problems.
□ Godai AZUMA, Doctor of Science (2023, March), His research is semidefinite relaxation for quadratic-constrained quadratic programming. https://godazm.org/
□ Yuudai ISHIKAWA, Master of Science (2023, March), His research is the criss-cross method for linear programming.
□ Yuki ASANO, Master of Science (2023, March), Her research is network optimization in factory.
□ Kou TAKEMURA, Master of Science (2023, March), His research is scheduling for operation rooms.
□ Tomoya YAMAKAWA, Master of Science (2nd year), His research is optimization algorithm for nonconvex problems.
□ Tomohiro ENDO, Bachelor of Science (2023, March), His research is green vehicle routing problem.
□ Kohei WAKITA, Bachelor of Science (2023, March), His research is network optimization related to UAVs and ships.
□ Ning-Wen YANG (from Taiwan), Master of Science (2022, September), Her research is network optimization related to UAVs and ships.
□ Yuma SAKAMOTO, Master of Science (2021, September), His research is an annealing method.
□ Siyuan CHEN (from China), Master of Science (2021, September), His research is related to semidefinite programming.
□ Yuki KATASE, Master of Science (2021, March), His research is a relation between SDP relaxation and SOCP relaxation.
□ Daichi TAKANO, Master of Science (2021, March), His research is SDP relaxation for electricity problem.
□ Masaaki TAMAI, Master of Science (2021, March), His research is robust optimization for radiotherapy.
□ Pornnapas HUNTRAKOOL (from Thailand), Master of Science (2021, March), Her research is an annealing method.
□ Koutarou KURODA, Master of Science (2021, March), His research is an optimal assiginment of operation rooms.
□ Ryunosuke TAKEDA, Master of Science (2021, March), His research is genetic algorithms.
□ Kouichi NISHIMURA, He moved to Sumita research group.
□ Chia-Lun HO (from Taiwan), Master of Science (2020, September), His research is an optimization method for multi-agent system.
□ Tomoyuki OKADA, Master of Science (2020, March), His research is polynomial optimization and its relaxation.
□ Masaki IKENO, Bachelor of Science (2020, March), His research is an interior-pont method withe kernel functions.
□ Sena SAFARINA (from Indonesia), Dr of Science(2019, September)[ IGP(A) ], Her research is optimization problems arising from tree breeding.
□ Heejune SHEEN, Research Student, His research is an SOCP relaxation.
□ Einosuke IIDA, Master of Science (2019, March), His research is an interior point method for nonlinear programming.
□ Yuuichi TERASAWA, Master of Science (2019, March), His research is box-constrained SDPs.
□ Shunsuke BABA, Master of Science (2019, March), His research is polynomial optimzations.
□ Shugo MIYAMOTO, Bachelor of Science (2019, March), His researh is Accelerated Modulus-Based Gauss-Seidel Method .
□ Yoshifumi KATSUMOTO, Master of Science (2018, September), His research is a redeloyment problem of ambulances.
□ Nurivita YULIANDANI (from Indonesia), Master student (2018, September), Her research is a nurse schdueling.
□ Fang HUI (from China), Master of Science (2018, March), Her reseach is evolution algorithm.
□ Masataka KIMIZUKA, Master of Science (2018, March), His research is SDP/SOCP/LP relaxation for pooling problems
□ Hikaru KOMEIJI, Master of Science (2018, March), His research is ADMM for SDP from Polynomial Optimzation.
□ Tasuku KOMINATO, Bachelor of Science (2018, March), His researh is an SDP solver in Julia.
□ Shogo KISHIMOTO, Master of Science (2017, March), His research is linear programming for radiotherapy.
□ Shunsuke KOBAYASHI, Master of Science (2017, March), His research is minumum vertex covering.
□ Kei TAKEMURA, Master of Science (2017, March), His research is an image denoising using tree structures.
□ Takeru KIDO, Master of Science (2016, March), His research is a GPS location problem.
□ Reishi SHIIBASHI, Master of Science (2016, March), He research is an appication of optimizatin techniques to a practical problem.
□ Takeshi SONE, Master of Science (2016, March), His research is sensor network problem.
□ Yang LI, Master of Science (2015, September), His research is related to power plant.
□ Masataka NAKANISHI, Bachelor of Science (2015, March), His research was financial portfolio with NISA.
□ Akihiko KOMATSU, Master of Science (2014, March), His research was nonlinear semidefnite programs and trust-region methods.
□ Kohtaro MIYAMOTO, Bachelor of Science (2014, March), His research was linear programming for nonnegative matrix factorization.
□ Yisha SUN, ACAP student (until 2014, March), Her research was an optimization problem arising from maximum likelihood estimate.
□ Naohiko ARIMA, a research student (until 2013, September), His research is copositive programming. (He moved to Chuo University)
□ Noritake KANESHIRO, Maste of Science (2013, March), His research was sensor network localization problems based on a viewpoint of statics.
□ Kei MIYAZAKI, Masterof Science (2013, March), His research was copositive programs and its linear relaxation.