Landweber iteration
= Landweber iteration
{c}
{wiki}
Landweber iteration applies $u_{n+1}=u_n+\tau A^*(f-Au_n)$. Starting at zero,
$$
u_N=\tau\sum_{n=0}^{N-1}(I-\tau A^*A)^nA^*f,
$$
and early stopping regularizes the inverse problem.
= Landweber iteration
{c}
{wiki}
Landweber iteration applies $u_{n+1}=u_n+\tau A^*(f-Au_n)$. Starting at zero,
$$
u_N=\tau\sum_{n=0}^{N-1}(I-\tau A^*A)^nA^*f,
$$
and early stopping regularizes the inverse problem.