A Block Lanczos Method for Large-Scale Quadratic Minimization Problems with Orthogonality Constraints
A Block Lanczos Method for Large-Scale Quadratic Minimization Problems with Orthogonality Constraints
.Quadratic minimization problems with orthogonality constraints (QMPO) play an important role in many applications of science and engineering. However, some existing methods may suffer from low accuracy or heavy workload for large-scale QMPO. Krylov subspace methods are popular for large-scale optimization problems. In this work, we propose a block Lanczos …