Greedy double subspaces coordinate descent method for solving linear least-squares problems

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Li-Li Jin, Hou-Biao Li

Published: 01 Jan 2023, Last Modified: 19 Jul 2024J. Comput. Sci. 2023EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: Highlights•Construct an effective coordinate descent method based on two direction vectors.•Propose a new solution space by the above two vectors.•Construct a greedy double subspaces coordinate descent method (GDSCD).•GDSCD improves convergence efficiency for matrices with highly coherent columns.