Ken Hayami

Publication Activity (10 Years)

Years Active: 1994-2023
Publications (10 Years): 18

Top Topics

Inverse Problems

Preconditioned Conjugate Gradient

Tomographic Reconstruction

Top Venues

J. Comput. Appl. Math.

SIAM J. Matrix Anal. Appl.

Numer. Linear Algebra Appl.

Publications

Kota Sugihara, Ken Hayami
Right preconditioned GMRES for arbitrary singular systems. CoRR (2023)
Ken Hayami, Keiichi Morikuni, Lothar Reichel, Ning Zheng
Recent advances in the numerical solution of matrix problems. J. Comput. Appl. Math. 430 (2023)
Kota Sugihara, Ken Hayami, Zeyu Liao
GMRES using pseudoinverse for range symmetric singular systems. J. Comput. Appl. Math. 422 (2023)
Kota Sugihara, Ken Hayami, Zeyu Liao
GMRES using pseudo-inverse for range symmetric singular systems. CoRR (2022)
Per Christian Hansen, Ken Hayami, Keiichi Morikuni
GMRES methods for tomographic reconstruction with an unmatched back projector. J. Comput. Appl. Math. 413 (2022)
Per Christian Hansen, Ken Hayami, Keiichi Morikuni
GMRES Methods for Tomographic Reconstruction with an Unmatched Back Projector. CoRR (2021)
Ken Hayami, Kota Sugihara
Corrigendum 2 to: A geometric view of Krylov subspace methods on singular systems. Numer. Linear Algebra Appl. 28 (4) (2021)
Yi-Shu Du, Ken Hayami, Ning Zheng, Keiichi Morikuni, Jun-Feng Yin
Kaczmarz-Type Inner-Iteration Preconditioned Flexible GMRES Methods for Consistent Linear Systems. SIAM J. Sci. Comput. 43 (5) (2021)
Ken Hayami, Kota Sugihara
GMRES on singular systems revisited. CoRR (2020)
Xiongfeng Song, Wei Xu, Ken Hayami, Ning Zheng
Secant variable projection method for solving nonnegative separable least squares problems. Numer. Algorithms 85 (2) (2020)
Yi-Shu Du, Ken Hayami, Ning Zheng, Keiichi Morikuni, Jun-Feng Yin
Kaczmarz-type inner-iteration preconditioned flexible GMRES methods for consistent linear systems. CoRR (2020)
Zeyu Liao, Ken Hayami, Keiichi Morikuni, Jun-Feng Yin
A Stabilized GMRES Method for Solving Underdetermined Least Squares Problems. CoRR (2020)
Kota Sugihara, Ken Hayami, Ning Zheng
Right preconditioned MINRES for singular systems†. Numer. Linear Algebra Appl. 27 (3) (2020)
Yiran Cui, Keiichi Morikuni, Takashi Tsuchiya, Ken Hayami
Implementation of interior-point methods for LP based on Krylov subspace iterative solvers with inner-iteration preconditioning. Comput. Optim. Appl. 74 (1) (2019)
José Marín, José Mas, Daniel Guerrero, Ken Hayami
Updating preconditioners for modified least squares problems. Numer. Algorithms 75 (2) (2017)
Zhong-Zhi Bai, Alessandro Buccini, Ken Hayami, Lothar Reichel, Jun-Feng Yin, Ning Zheng
Modulus-based iterative methods for constrained Tikhonov regularization. J. Comput. Appl. Math. 319 (2017)
Wei Xu, Ning Zheng, Ken Hayami
Jacobian-Free Implicit Inner-Iteration Preconditioner for Nonlinear Least Squares Problems. J. Sci. Comput. 68 (3) (2016)
Ning Zheng, Ken Hayami, Jun-Feng Yin
Modulus-Type Inner Outer Iteration Methods for Nonnegative Constrained Least Squares Problems. SIAM J. Matrix Anal. Appl. 37 (3) (2016)
Philippe Gaudreau, Ken Hayami, Yasunori Aoki, Hassan Safouhi, Akihiko Konagaya
Improvements to the cluster Newton method for underdetermined inverse problems. J. Comput. Appl. Math. 283 (2015)
Keiichi Morikuni, Ken Hayami
Convergence of Inner-Iteration GMRES Methods for Rank-Deficient Least Squares Problems. SIAM J. Matrix Anal. Appl. 36 (1) (2015)
Ken Hayami, Masaaki Sugihara
Corrigendum to: A geometric view of Krylov subspace methods on singular systems. Numer. Linear Algebra Appl. 21 (5) (2014)
Yasunori Aoki, Ken Hayami, Hans De Sterck, Akihiko Konagaya
Cluster Newton Method for Sampling Multiple Solutions of Underdetermined Inverse Problems: Application to a Parameter Identification Problem in Pharmacokinetics. SIAM J. Sci. Comput. 36 (1) (2014)
Keiichi Morikuni, Ken Hayami
Inner-Iteration Krylov Subspace Methods for Least Squares Problems. SIAM J. Matrix Anal. Appl. 34 (1) (2013)
Ken Hayami, Masaaki Sugihara
A geometric view of Krylov subspace methods on singular systems. Numer. Linear Algebra Appl. 18 (3) (2011)
Xiaoke Cui, Ken Hayami, Jun-Feng Yin
Greville's method for preconditioning least squares problems. Adv. Comput. Math. 35 (2-4) (2011)
Ken Hayami, Jun-Feng Yin, Tokushi Ito
GMRES Methods for Least Squares Problems. SIAM J. Matrix Anal. Appl. 31 (5) (2010)
Guoqiang Han, Ken Hayami, Wang Jiong
Product integration method for Volterra integral equation with noncompact kernel. Appl. Math. Comput. 121 (2-3) (2001)
Guoqiang Han, Ken Hayami, Kokichi Sugihara, Wang Jiong
Extrapolation method of iterated collocation solution for two-dimensional nonlinear Volterra integral equations. Appl. Math. Comput. 112 (1) (2000)
Takumi Washio, Ken Hayami
Overlapped Multicolor MILU Preconditioning. SIAM J. Sci. Comput. 16 (3) (1995)
Takumi Washio, Ken Hayami
Parallel block preconditioning based on SSOR and MILU. Numer. Linear Algebra Appl. 1 (6) (1994)