Combinatorial preconditioning for accelerating the convergence of the parallel block Jacobi method for the symmetric eigenvalue problem. - Masaki Kugaya; Shuhei Kudo; Yusaku Yamamoto (JSIAM Lett., 2021)

Approximate Block Diagonalization of Symmetric Matrices Using Quantum Annealing. - Koushi Teramoto; Masaki Kugaya; Shuhei Kudo; Yasuhiko Takenaga; Yusaku Yamamoto (HPC Asia, 2024)