Accurate conjugate gradient methods for families of shifted systems∗
نویسندگان
چکیده
We consider the solution of the linear system
منابع مشابه
Accurate conjugate gradient methods for shifted systems
We present an efficient and accurate variant of the conjugate gradient method for solving families of shifted systems. In particular we are interested in shifted systems that occur in Tikhonov regularization for inverse problems since these problems can be sensitive to roundoff errors. The success of our method in achieving accurate approximations is supported by theoretical arguments as well a...
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