joshua.decoder.phrase.PhraseChart Class Reference

Collaboration diagram for joshua.decoder.phrase.PhraseChart:

List of all members.

Public Member Functions
	PhraseChart (PhraseTable[] tables, List< FeatureFunction > features, Sentence source, int num_options)
int	SentenceLength ()
int	MaxSourcePhraseLength ()
TargetPhrases	getRange (int begin, int end)
Package Attributes
int	numOptions = 20
Private Member Functions
int	offset (int i, int j)
void	addToRange (int begin, int end, RuleCollection to)
Private Attributes
int	sentence_length
int	max_source_phrase_length
List< TargetPhrases >	entries
List< FeatureFunction >	features

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Detailed Description

This class represents a bundle of phrase tables that have been read in, reporting some stats about them. Probably could be done away with.

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Constructor & Destructor Documentation

joshua.decoder.phrase.PhraseChart.PhraseChart	(	PhraseTable[]	tables,
		List< FeatureFunction >	features,
		Sentence	source,
		int	num_options
	)

Create a new PhraseChart object, which represents all phrases that are applicable against the current input sentence. These phrases are extracted from all available grammars.

Parameters:

tables
source

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Member Function Documentation

void joshua.decoder.phrase.PhraseChart.addToRange	(	int	begin,
		int	end,
		RuleCollection	to
	)		[private]

Add a set of phrases from a grammar to the current span.

Parameters:

begin
end
to

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TargetPhrases joshua.decoder.phrase.PhraseChart.getRange	(	int	begin,
		int	end
	)

Returns phrases from all grammars that match the span.

Parameters:

begin
end

Returns:

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int joshua.decoder.phrase.PhraseChart.MaxSourcePhraseLength

(

)

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int joshua.decoder.phrase.PhraseChart.offset	(	int	i,
		int	j
	)		[private]

Maps two-dimensional span into a one-dimensional array.

Parameters:

i
j

Returns:

offset into private list of TargetPhrases

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int joshua.decoder.phrase.PhraseChart.SentenceLength

(

)

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Member Data Documentation

List<TargetPhrases> joshua.decoder.phrase.PhraseChart.entries [private]

List<FeatureFunction> joshua.decoder.phrase.PhraseChart.features [private]

int joshua.decoder.phrase.PhraseChart.max_source_phrase_length [private]

int joshua.decoder.phrase.PhraseChart.numOptions = 20 [package]

int joshua.decoder.phrase.PhraseChart.sentence_length [private]