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Time complexity of Gauss-Seidel iterative inversion method

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Nurulhuda Ismail
Nurulhuda Ismail 2020-2-10
编辑： Nurulhuda Ismail 2020-2-10
Hi,
What is the factor that causes Gauss-Seidel method takes longer time execution in MATLAB caompared to the neumann series method?
Is it because of the lower triangular matrix inversion that is solved using Forward-backward substitution? For your informtion, I use tic-toc function in MATLAB to measure the elapsed time required by both method.
For example, with 1 iteration, GS takes 1405 sec while Neumann series takes only 138 sec to be executed.
Thank you.

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