com.indeed.vw.wrapper.api.parameters

Interface LinkAndLossOptions

All Known Subinterfaces:

SGDVowpalWabbitBuilder

All Known Implementing Classes:

VowpalWabbit.Builder

interface LinkAndLossOptions

Link and Loss options.

loss function defines gradient using to update feature weights; link function is applied to linear composition.

Possibility to set these to functions makes vowpal wabbit GLM framework.

Check https: github.com/JohnLangford/vowpal_wabbit/wiki/Loss-functions

Method Summary

Modifier and Type	Method and Description
SGDVowpalWabbitBuilder	link(Link link) Specify the link function: identity, logistic, glf1 or poisson (=identity)
SGDVowpalWabbitBuilder	lossFunction(Loss loss) Specify the loss function to be used, uses squared by default.
SGDVowpalWabbitBuilder	quantileTau(double tau) Parameter \tau associated with Quantile loss.

Method Detail

lossFunction

SGDVowpalWabbitBuilder lossFunction(Loss loss)

Specify the loss function to be used, uses squared by default. Currently available ones are

squared, classic, hinge, logistic, quantile and poisson. (=squared)

Parameters:

loss - loss function

Returns:

builder

quantileTau

SGDVowpalWabbitBuilder quantileTau(double tau)

Parameter \tau associated with Quantile loss. Defaults to 0.5 (=0.5)

Parameters:

tau - tau quantile. Must be in range [0, 1].

Returns:

builder

link

SGDVowpalWabbitBuilder link(Link link)

Specify the link function: identity, logistic, glf1 or poisson (=identity)

Parameters:

link - link function

Returns:

builder