com.indeed.vw.wrapper.api.parameters

Interface FeatureEngineeringFunctions

All Known Subinterfaces:

SGDVowpalWabbitBuilder

All Known Implementing Classes:

VowpalWabbit.Builder

interface FeatureEngineeringFunctions

Feature engineering functions.

Feature engineering is a strong part of vowpal wabbit.

To refer any namespaces use VowpalWabbit.ANY_NAMESPACE

Method Summary

Modifier and Type	Method and Description
SGDVowpalWabbitBuilder	constant(double initialValue) Set initial value of constant
SGDVowpalWabbitBuilder	cubic(String firstNameSpace, String secondNamespace, String thirdNamespace) Create and use cubic features
SGDVowpalWabbitBuilder	lrqfa(String firstNamespace, String secondNamespace, int k) use low rank quadratic feature-aware weights
SGDVowpalWabbitBuilder	ngram(String namespace, int n) Generate N grams.
SGDVowpalWabbitBuilder	noconstant() Don't add a constant feature
SGDVowpalWabbitBuilder	quadratic(String firstNameSpace, String secondNamespace) Create and use quadratic features
SGDVowpalWabbitBuilder	skips(String namespace, int n) Generate skips in N grams.

Method Detail

noconstant

SGDVowpalWabbitBuilder noconstant()

Don't add a constant feature

Returns:

builder

constant

SGDVowpalWabbitBuilder constant(double initialValue)

Set initial value of constant

Parameters:

initialValue - bias initial value

Returns:

builder

ngram

SGDVowpalWabbitBuilder ngram(String namespace,
                             int n)

Generate N grams. To generate N grams for a single namespace 'foo', arg should be fN.

Parameters:

namespace - namespace name, or ':' for any namespaces

n - size of n-gram.

Returns:

builder

skips

SGDVowpalWabbitBuilder skips(String namespace,
                             int n)

Generate skips in N grams. This in conjunction with the ngram tag can be used to generate generalized n-skip-k-gram.

To generate n-skips for a single namespace 'foo', arg should be fN.

Parameters:

namespace - namespace name, or ':' for any namespaces

n - size of skips n-gram.

Returns:

builder

quadratic

SGDVowpalWabbitBuilder quadratic(String firstNameSpace,
                                 String secondNamespace)

Create and use quadratic features

Parameters:

firstNameSpace - namespace name, or ':' for any namespaces

secondNamespace - namespace name, or ':' for any namespaces

Returns:

builder

cubic

SGDVowpalWabbitBuilder cubic(String firstNameSpace,
                             String secondNamespace,
                             String thirdNamespace)

Create and use cubic features

Parameters:

firstNameSpace - namespace name, or ':' for any namespaces

secondNamespace - namespace name, or ':' for any namespaces

thirdNamespace - namespace name, or ':' for any namespaces

Returns:

builder

lrqfa

SGDVowpalWabbitBuilder lrqfa(String firstNamespace,
                             String secondNamespace,
                             int k)

use low rank quadratic feature-aware weights

Parameters:

firstNamespace - namespace name, or ':' for any namespaces

secondNamespace - namespace name, or ':' for any namespaces

k - k factorized matrices width

Returns:

builder