Fitting Ridge Regression on the training set with Lambda chosen by Cross Validation and Test Error.

[@kylmaz5782]

Hello. Which method should I follow to get the best lambda value? For example I have a small dataset and I want to manually (by hand) get the best lambda value. How do I do this?

[@saeed5303]

The best lamba value is the one with the lowest cross validation error. On the graph above in the video, i plot all the possible values of lambda with cross validation errors on the y-axis.

[@kylmaz5782]

@@saeed5303 Thanks for your answer.