I made this plot for my M-estimation library, but I think the image nicely showcases how the various loss functions for robust mean/regression penalize the errors (of the 1st deriv of log-L)
I made this plot for my M-estimation library, but I think the image nicely showcases how the various loss functions for robust mean/regression penalize the errors (of the 1st deriv of log-L)
no penalty would be a diagonal line with a slope of 1