Ph.D. in Information Science, Waseda University, Japan, March 2003
M.Sc., Waseda University, Japan, March 2001
B.Sc., Waseda University, Japan, March 1999
Professional career:
2023 - present: Professor, Waseda University, Japan
2018 - 2023: Professor, Tokyo Woman's Christian University, Japan
2014 - 2020: Director of the Center for Information Science, Tokyo Woman's Christian University, Japan
2011: Professeur Invité, Université de Perpignan Via Domitia, France
2010 - 2018: Associate Professor, Tokyo Woman's Christian University, Japan
2008 - 2010: Lecturer, Tokyo Woman's Christian University, Japan
2005 - 2008: CREST Researcher, Japan Science and Technology Agency (JST), Japan
2003 - 2005: Visiting Lecturer (full-time), Waseda University, Japan
2001 - 2003: Research Associate, Waseda University, Japan
Main papers:
Takeshi Ogita, Kensuke Aishima:
Iterative refinement for symmetric eigenvalue decomposition,
Japan Journal of Industrial and Applied Mathematics, 35:3 (2018), 1007-1035.
/ Part II: clustered eigenvalues, 36:2 (2019), 435-459.
Takeshi Ogita:
Accurate matrix factorization: Inverse LU and inverse QR factorizations,
SIAM Journal on Matrix Analysis and Applications, 31:5 (2010), 2477-2497.
Takeshi Ogita, Siegfried M. Rump, Shin'ichi Oishi:
Accurate sum and dot product,
SIAM Journal on Scientific Computing, 26:6 (2005), 1955-1988.
Takeshi Ogita, Shin'ichi Oishi, Yasunori Ushiro:
Fast verification of solutions for sparse monotone matrix equations,
Computing, Supplement 15 (2001), 175-187.
(Topics in Numerical Analysis: With Special Emphasis on Nonlinear Problems, G. Alefeld and X. Chen eds., Springer WienNewYork, Austria)
T. Ogita: (Plenary lecture) Verified Solutions of Sparse Linear Systems, The 15th GAMM-IMACS International Symposium on Scientific Computing, Computer Arithmetic and Verified Numerical Computations (SCAN 2012), Novosibirsk, Russia, Sep. 26, 2012.
T. Ogita: (Special lecture) Error-free Transformation and Robust Matrix Decompositions, The Mathematical Society of Japan Spring Meeting 2010, Keio University, Mar. 25, 2010.
T. Ogita: (Invited talk) Fast and Accurate Computation of Sum and Dot Product, Dagstuhl Seminar 05391: Algebraic and Numerical Algorithms and Computer-assisted Proofs, Dagstuhl, Germany, Sep. 30, 2005.
Awards:
D. Mukunoki, K. Ozaki, T. Ogita, T. Imamura: Research Poster Award, ISC High Performance 2021 Digital, June, 2021.
T. Ogita, K. Aishima: Best Paper Award [JJIAM], The Japan Society for Industrial and Applied Mathematics (JSIAM), Sep. 2020.
Y. Kobayashi, T. Ogita: Best Paper Award [JSIAM Letters], The Japan Society for Industrial and Applied Mathematics (JSIAM), Sep. 2017.
T. Ogita: The Young Scientists' Prize, The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology, Apr. 2015.
S. M. Rump, T. Ogita, S. Oishi: Best Paper Award, Nonlinear Theory and Its Applications, IEICE (journal), IEICE Engineering Sciences Society, Oct. 2012.
K. Ozaki, T. Ogita, S. Oishi: Best Author Award [BJSIAM], The Japan Society for Industrial and Applied Mathematics (JSIAM), Aug. 2012.
S. Oishi, T. Ogita: Achievement Award, The Japan Society for Industrial and Applied Mathematics (JSIAM), Feb. 2012.
T. Ogita, N. Yamanaka: Highest Award [Public Category], Scilab Toolbox Japan Contest 2010, Sep. 2010.
T. Ohta, T. Ogita, S. M. Rump, S. Oishi: Best Paper Award (TJSIAM), The Japan Society for Industrial and Applied Mathematics (JSIAM), Sep. 2006.
T. Ogita: Azusa Ono Memorial Awards for Academic Studies, Waseda University, Mar. 2003
2016: NOLTA 2016 Technical Program Committee Member
2015: Guest Editor, Journal "Nonlinear Theory and Its Applications, IEICE": Special Section on Rigorous Nonlinear Analysis
2015: NOLTA 2015 Technical Program Committee Member
2013 - 2015: Chief, JSIAM Activity Group on Young Researchers
2013 - 2014: Secretary, Journal "Nonlinear Theory and Its Applications, IEICE": Special Section on Nonlinear Electronics: Phenomena, Models and Computational Methods
2012, 2013, 2014: Guest Editor, Journal "Nonlinear Theory and Its Applications, IEICE": Special Section on Recent Progress in Verified Numerical Computations
2011 - 2013: Secretary, JSIAM Activity Group on Young Researchers
2010 - : Representative Member, JSIAM
2010 - 2011: EASIAM 2011 Local Organization Member
2010: Guest Associate Editor, Journal "Nonlinear Theory and Its Applications, IEICE": Special section on Recent Progress in Verified Numerical Computations