Research Article
Smoothing and Regularization with Modified Sparse Approximate Inverses
Table 4
Optimal reconstruction error for the 1D blur operator and the original data . The problem has size and is affected by random noise of order 0.1%. .
| Regularization method | Optimal value | Reached at iter. |
| Tikhonov | | 0.1286 | — | CG | | 0.1240 | 8 |
| PCG | no boundary correction | 0.1210 | 130 | | 0.0433 | 58 | , middle correction | 0.0263 | 52 |
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