edu.umn.cs.nlp.mt.tools
Class CalculatePhrasePairLexProbs

java.lang.Object
  edu.umn.cs.nlp.mt.tools.CalculatePhrasePairLexProbs

public class CalculatePhrasePairLexProbs
extends Object

Earlier steps extracted phrase pairs from an aligned corpus; each phrase pair at that stage has an associated relative frequency weight and preliminary source-to-target and target-to-source lexical translation probabilities.

This program calculates the actual lexical translation probabilities using weighted averaging. This program uses real probabilities, not logprobs.

Version:

$LastChangedDate: 2007-11-26 10:42:44 -0600 (Mon, 26 Nov 2007) $

Author:

Lane Schwartz

See Also:

2 of "A Hierarchical Phrase-Based Model for Statistical Machine Translation" by David Chiang (ACL, 2005), 4.4 of "Statistical Phrase-Based Translation" by Philipp Koehn, Franz Josef Och, & Daniel Marcu (HLT-NAACL, 2003)

Constructor Summary

CalculatePhrasePairLexProbs()

Method Summary

static void	calculate(Scanner input, String input_delimiter, Writer output, String output_delimiter)
static void	main(String[] args) Calculates the actual lexical translation probability (in one direction only) for each phrase pair using weighted averaging.

Methods inherited from class java.lang.Object

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

Constructor Detail

CalculatePhrasePairLexProbs

public CalculatePhrasePairLexProbs()

Method Detail

calculate

public static void calculate(Scanner input,
                             String input_delimiter,
                             Writer output,
                             String output_delimiter)
                      throws IOException

Throws:

IOException

main

public static void main(String[] args)

Calculates the actual lexical translation probability (in one direction only) for each phrase pair using weighted averaging.

Parameters:

args -