Szukana fraza: [Abstract = "It is shown that the Tikhonov regularization is a form of linear quadratic ILC, and that the regularization approach solves the important practical problem of how to intelligently pick the weighting matrices in the quadratic cost. It is also shown how to use a modification of the Tikhonov\-based quadratic cost in order to produce a frequency cutoff. This robustifies good learning transients, by reformulating the problem as an over\-determined system."]