cc.mallet.fst.semi_supervised.constraints
Class OneLabelL2GEConstraints

java.lang.Object
  cc.mallet.fst.semi_supervised.constraints.OneLabelGEConstraints
      cc.mallet.fst.semi_supervised.constraints.OneLabelL2GEConstraints

All Implemented Interfaces:

GEConstraint

public class OneLabelL2GEConstraints
extends OneLabelGEConstraints

A set of constraints on distributions over consecutive labels conditioned an input features. This is to be used with GE, and penalizes the L_2^2 difference between model and target distributions. Multiple constraints are grouped together here to make things more efficient.

Author:

Gregory Druck

Nested Class Summary

protected class

OneLabelL2GEConstraints.OneLabelGEL2Constraint

Nested classes/interfaces inherited from class cc.mallet.fst.semi_supervised.constraints.OneLabelGEConstraints

OneLabelGEConstraints.OneLabelGEConstraint

Field Summary

Fields inherited from class cc.mallet.fst.semi_supervised.constraints.OneLabelGEConstraints

cache, constraints, map

Constructor Summary

OneLabelL2GEConstraints()

Method Summary

void	addConstraint(int fi, double[] target, double weight)
GEConstraint	copy() This is used in multi-threading.
double	getValue() Returns the total constraint value.

Methods inherited from class cc.mallet.fst.semi_supervised.constraints.OneLabelGEConstraints

computeExpectations, getCompositeConstraintFeatureValue, isOneStateConstraint, preProcess, preProcess, setStateLabelMap, zeroExpectations

Methods inherited from class java.lang.Object

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

Constructor Detail

OneLabelL2GEConstraints

public OneLabelL2GEConstraints()

Method Detail

copy

public GEConstraint copy()

Description copied from interface: GEConstraint

This is used in multi-threading.

Returns:

A copy of the GEConstraint.

addConstraint

public void addConstraint(int fi,
                          double[] target,
                          double weight)

Specified by:

addConstraint in class OneLabelGEConstraints

getValue

public double getValue()

Description copied from interface: GEConstraint

Returns the total constraint value.

Specified by:

getValue in interface GEConstraint

Specified by:

getValue in class OneLabelGEConstraints

Returns:

Constraint value