joshua.decoder.BLEU Class Reference

List of all members.

Static Public Member Functions
static double	computeSentenceBleu (String[] refSents, String hypSent)
static double	computeSentenceBleu (String[] refSents, String hypSent, boolean doNgramClip, int bleuOrder, boolean useShortestRef)
static double	computeEffectiveLen (int[] refLens, boolean useShortestRef)
static HashMap< String, Integer >	constructMaxRefCountTable (String[] refSents, int bleuOrder)
static HashMap< String, Integer >	computeMaxRefCountTbl (List< HashMap< String, Integer >> listRefNgramTbl)
static double	computeSentenceBleu (double effectiveRefLen, HashMap< String, Integer > maxRefCountTbl, int hypLen, HashMap< String, Integer > hypNgramTbl, boolean doNgramClip, int bleuOrder)
static double	computeSentenceBleu (String refSent, String hypSent, boolean doNgramClip, int bleuOrder)
static double	computeSentenceBleu (int refLen, HashMap< String, Integer > refNgramTbl, int hypLen, HashMap< String, Integer > hypNgramTbl, boolean doNgramClip, int bleuOrder)
static double	computeBleu (int hypLen, double refLen, int[] numNgramMatch, int bleuOrder)
static HashMap< String, Integer >	constructNgramTable (String sentence, int bleuOrder)
static double	computeLinearCorpusGain (double[] linearCorpusGainThetas, String[] refSents, String hypSent)
static double	computeLinearCorpusGain (double[] linearCorpusGainThetas, int hypLength, Map< String, Integer > hypNgramTable, Map< String, Integer > referenceNgramTable)
static int[]	computeNgramMatches (String[] refSents, String hypSent)
static int[]	computeNgramMatches (int hypLength, Map< String, Integer > hypNgramTable, Map< String, Integer > referenceNgramTable, int highestOrder)
static double[]	computeLinearCorpusThetas (int numUnigramTokens, double unigramPrecision, double decayRatio)

---

Detailed Description

this class implements: (1) sentence-level bleu, with smoothing

Author:

Zhifei Li, zhife.nosp@m.i.wo.nosp@m.rk@gm.nosp@m.ail..nosp@m.com

Version:

$LastChangedDate$

---

Member Function Documentation

static double joshua.decoder.BLEU.computeBleu	(	int	hypLen,
		double	refLen,
		int[]	numNgramMatch,
		int	bleuOrder
	)		[static]

Here is the caller graph for this function:

static double joshua.decoder.BLEU.computeEffectiveLen	(	int[]	refLens,
		boolean	useShortestRef
	)		[static]

Here is the caller graph for this function:

static double joshua.decoder.BLEU.computeLinearCorpusGain	(	double[]	linearCorpusGainThetas,
		String[]	refSents,
		String	hypSent
	)		[static]

Here is the call graph for this function:

static double joshua.decoder.BLEU.computeLinearCorpusGain	(	double[]	linearCorpusGainThetas,
		int	hypLength,
		Map< String, Integer >	hypNgramTable,
		Map< String, Integer >	referenceNgramTable
	)		[static]

speed consideration: assume hypNgramTable has a smaller size than referenceNgramTable does

Here is the call graph for this function:

static double [] joshua.decoder.BLEU.computeLinearCorpusThetas	(	int	numUnigramTokens,
		double	unigramPrecision,
		double	decayRatio
	)		[static]

static HashMap<String, Integer> joshua.decoder.BLEU.computeMaxRefCountTbl

(

List< HashMap< String, Integer >>

listRefNgramTbl

)

[static]

compute max_ref_count for each ngram in the reference sentences

Here is the caller graph for this function:

static int [] joshua.decoder.BLEU.computeNgramMatches	(	String[]	refSents,
		String	hypSent
	)		[static]

Here is the call graph for this function:

static int [] joshua.decoder.BLEU.computeNgramMatches	(	int	hypLength,
		Map< String, Integer >	hypNgramTable,
		Map< String, Integer >	referenceNgramTable,
		int	highestOrder
	)		[static]

Here is the call graph for this function:

static double joshua.decoder.BLEU.computeSentenceBleu	(	String[]	refSents,
		String	hypSent
	)		[static]

Here is the caller graph for this function:

static double joshua.decoder.BLEU.computeSentenceBleu	(	String[]	refSents,
		String	hypSent,
		boolean	doNgramClip,
		int	bleuOrder,
		boolean	useShortestRef
	)		[static]

Parameters:

refSents
hypSent
doNgramClip	Should usually be true
bleuOrder	Should usually be 4
useShortestRef	Probably use false

Here is the call graph for this function:

static double joshua.decoder.BLEU.computeSentenceBleu	(	double	effectiveRefLen,
		HashMap< String, Integer >	maxRefCountTbl,
		int	hypLen,
		HashMap< String, Integer >	hypNgramTbl,
		boolean	doNgramClip,
		int	bleuOrder
	)		[static]

Here is the call graph for this function:

static double joshua.decoder.BLEU.computeSentenceBleu	(	String	refSent,
		String	hypSent,
		boolean	doNgramClip,
		int	bleuOrder
	)		[static]

Here is the call graph for this function:

static double joshua.decoder.BLEU.computeSentenceBleu	(	int	refLen,
		HashMap< String, Integer >	refNgramTbl,
		int	hypLen,
		HashMap< String, Integer >	hypNgramTbl,
		boolean	doNgramClip,
		int	bleuOrder
	)		[static]

Here is the call graph for this function:

static HashMap<String, Integer> joshua.decoder.BLEU.constructMaxRefCountTable	(	String[]	refSents,
		int	bleuOrder
	)		[static]

words in the ngrams are using integer symbol ID

Here is the call graph for this function:

Here is the caller graph for this function:

static HashMap<String, Integer> joshua.decoder.BLEU.constructNgramTable	(	String	sentence,
		int	bleuOrder
	)		[static]

Here is the call graph for this function:

Here is the caller graph for this function: