datatable.models.Ftrl.lambda1¶
lambda1
lambda1
L1 regularization parameter, \(\lambda_1\) in per-coordinate FTRL-Proximal algorithm.
Parameters¶
return
float
Current lambda1
value.
newlambda1
float
New lambda1
value, should be non-negative.
except
ValueError
The exception is raised when newlambda1
is negative.