edu.cmu.sphinx.decoder.search
Class AlternateHypothesisManager

java.lang.Object
  edu.cmu.sphinx.decoder.search.AlternateHypothesisManager

public class AlternateHypothesisManager
extends java.lang.Object

Manager for pruned hypothesis

Author:

Joe Woelfel

Constructor Summary

AlternateHypothesisManager(int maxEdges)
Creates an alternate hypotheses manager

Method Summary

void	addAlternatePredecessor(Token token, Token predecessor) Collects adds alternate predecessors for a token that would have lost because of viterbi.
void	changeSuccessor(Token newSuccessor, Token oldSuccessor) Change the successor from one token to another
java.util.List<Token>	getAlternatePredecessors(Token token) Returns a list of alternate predecessors for a token.
boolean	hasAlternatePredecessors(Token token)
void	purge() Purge all but max number of alternate preceding token hypotheses.

Methods inherited from class java.lang.Object

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

Constructor Detail

AlternateHypothesisManager

public AlternateHypothesisManager(int maxEdges)

Creates an alternate hypotheses manager

Parameters:

maxEdges - the maximum edges allowed

Method Detail

addAlternatePredecessor

public void addAlternatePredecessor(Token token,
                                    Token predecessor)

Collects adds alternate predecessors for a token that would have lost because of viterbi.

Parameters:

token - - a token that has an alternate lower scoring predecessor that still might be of interest

predecessor - - a predecessor that scores lower than token.getPredecessor().

getAlternatePredecessors

public java.util.List<Token> getAlternatePredecessors(Token token)

Returns a list of alternate predecessors for a token.

Parameters:

token - - a token that may have alternate lower scoring predecessor that still might be of interest

Returns:

A list of predecessors that scores lower than token.getPredecessor().

purge

public void purge()

Purge all but max number of alternate preceding token hypotheses.

changeSuccessor

public void changeSuccessor(Token newSuccessor,
                            Token oldSuccessor)

Change the successor from one token to another

Parameters:

newSuccessor - the new successor token

oldSuccessor - the old successor token

hasAlternatePredecessors

public boolean hasAlternatePredecessors(Token token)