datatable.models.Ftrl.lambda2¶
lambda2
lambda2
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.