datatable.models.Ftrl.lambda2

datatable.models.Ftrl.
lambda2
=
newlambda2
source

L2 regularization parameter, \(\lambda_2\) in per-coordinate FTRL-Proximal algorithm.

Parameters

return
float

Current lambda2 value.

newlambda2
float

New lambda2 value, should be non-negative.

except
ValueError

The exception is raised when newlambda2 is negative.