com.indeed.vw.wrapper.api.parameters

Interface UpdatesOptions

All Known Subinterfaces:

SGDVowpalWabbitBuilder

All Known Implementing Classes:

VowpalWabbit.Builder

interface UpdatesOptions

Updates options.

These options automates and hides complexity of learning rates parameter tuning.

Notice that by default adaptive, invariant and normalized are turned on and to remove them you need to pass sgd parameter.

Adaptive option tunes learning rates individually per feature. This option is highly recommended - if you do not specify it, then rare features will have too small weights.

Invariant option allows consider example's weight during online learning. Without this option example's weight will be ignored. Also this option usually improves model quality.

Normalize option turns on online feature scaling. In a lot of cases you want to remove this option, specially in case of very sparse boolean feature space.

Always play with these options first, it usually gives the biggest gain.

Method Summary

Modifier and Type	Method and Description
SGDVowpalWabbitBuilder	adaptive() use adaptive, individual learning rates.
SGDVowpalWabbitBuilder	invariant() use safe/importance aware updates.
SGDVowpalWabbitBuilder	learningRate(double learningRate) Set learning rate
SGDVowpalWabbitBuilder	normalized() use per feature normalized updates
SGDVowpalWabbitBuilder	sgd() use regular stochastic gradient descent update.

Method Detail

sgd

SGDVowpalWabbitBuilder sgd()

use regular stochastic gradient descent update.

removes adaptive, invariant and normalized options

Returns:

builder

adaptive

SGDVowpalWabbitBuilder adaptive()

use adaptive, individual learning rates.

Returns:

builder

invariant

SGDVowpalWabbitBuilder invariant()

use safe/importance aware updates.

Returns:

builder

normalized

SGDVowpalWabbitBuilder normalized()

use per feature normalized updates

Returns:

builder

learningRate

SGDVowpalWabbitBuilder learningRate(double learningRate)

Set learning rate

Parameters:

learningRate - learning rate. Must be positive

Returns:

builder