edu.stanford.nlp.ie

Class NERFeatureFactory.FeatureCollector

java.lang.Object

edu.stanford.nlp.ie.NERFeatureFactory.FeatureCollector

Enclosing class:

NERFeatureFactory<IN extends CoreLabel>

protected static class NERFeatureFactory.FeatureCollector
extends java.lang.Object

This class handles collecting features into a set, in a more memory efficient way. The benefits arise from handling the concatenation and suffix appending re-using a single buffer, rather than repeatedly concatenating strings. This class is not thread safe, but you are unlikely to want to parallelize at this low level anyway.

Author:

Erich Schubert

Constructor Summary

Constructors

Constructor and Description
FeatureCollector(java.util.Set<java.lang.String> output) Constructor

Method Summary

Modifier and Type	Method and Description
void	add() End the current feature, and add with suffixes.
void	add(java.lang.String feat) Add a feature (+ suffix).
NERFeatureFactory.FeatureCollector	append(char c) Append to the current feature name
NERFeatureFactory.FeatureCollector	append(java.lang.String s) Append to the current feature name
NERFeatureFactory.FeatureCollector	build() Begin a new feature construction.
NERFeatureFactory.FeatureCollector	dash() Append '-' to the current feature name
void	setDomain(java.lang.String domain) Additional suffix domain.
NERFeatureFactory.FeatureCollector	setSuffix(java.lang.String suffix) Set the suffix to append to each token (separated by "|")

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FeatureCollector

public FeatureCollector(java.util.Set<java.lang.String> output)

Constructor

Parameters:

output - Output collection

Method Detail

setSuffix

public NERFeatureFactory.FeatureCollector setSuffix(java.lang.String suffix)

Set the suffix to append to each token (separated by "|")

Parameters:

suffix - Suffix to use

setDomain

public void setDomain(java.lang.String domain)

Additional suffix domain. If a domain is set, then all features will be duplicated with the alternate suffix "|" + domain + "-" + suffix".

Parameters:

domain - Suffix domain

build

public NERFeatureFactory.FeatureCollector build()

Begin a new feature construction.

Returns:

this

append

public NERFeatureFactory.FeatureCollector append(java.lang.String s)

Append to the current feature name

Parameters:

s - String fragment

Returns:

this

append

public NERFeatureFactory.FeatureCollector append(char c)

Append to the current feature name

Parameters:

c - Character

Returns:

this

dash

public NERFeatureFactory.FeatureCollector dash()

Append '-' to the current feature name

Returns:

this

add

public void add()

End the current feature, and add with suffixes.

add

public void add(java.lang.String feat)

Add a feature (+ suffix).

Parameters:

feat - Feature