bfunc: Compute upper bound of second derivative of loss
In bst: Gradient Boosting
bfunc R Documentation
Compute upper bound of second derivative of loss
Description
Compute upper bound of second derivative of loss.
Usage
bfunc(family, s)
Arguments
family
a family from "closs", "gloss", "qloss" for classification and "clossR" for robust regression.
s
a parameter related to robustness.
Details
A finite upper bound is required in quadratic majorization.
Value
A positive number.
Author(s)
Zhu Wang
bst documentation built on Jan. 7, 2023, 1:23 a.m.
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| bfunc | R Documentation |
Compute upper bound of second derivative of loss
Description
Compute upper bound of second derivative of loss.
Usage
bfunc(family, s)
Arguments
family |
a family from "closs", "gloss", "qloss" for classification and "clossR" for robust regression. |
s |
a parameter related to robustness. |
Details
A finite upper bound is required in quadratic majorization.
Value
A positive number.
Author(s)
Zhu Wang
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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