A modified USSOR method for solving the rank deficient linear least squares problem

Key Points

• The modified USSOR method significantly improves convergence rates in solving rank deficient linear least squares problems, addressing existing limitations.
• An optimal parameter for the MUSSOR method enhances its effectiveness in numerical examples, showing marked improvement over earlier methods.
• Development included convergence analysis of the MUSSOR method, revealing its stability and applicability to complex problems.
• MUSSOR may enable faster solutions for practical applications, highlighting the need for ongoing improvements in numerical methods.