joshua.decoder.DecoderFactory Class Reference

Collaboration diagram for joshua.decoder.DecoderFactory:

List of all members.

Public Member Functions
	DecoderFactory (List< GrammarFactory > grammarFactories, boolean useMaxLMCostForOOV, List< FeatureFunction > featureFunctions, List< StateComputer > stateComputers)
void	decodeTestSet (String testFile, String nbestFile, String oracleFile)
HyperGraph	getHyperGraphForSentence (String sentence)
Private Attributes
List< GrammarFactory >	grammarFactories = null
List< FeatureFunction >	featureFunctions = null
List< StateComputer >	stateComputers
boolean	useMaxLMCostForOOV = false
Thread[]	decoderThreads
Static Private Attributes
static final Logger	logger = Logger.getLogger(DecoderFactory.class.getName())

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Detailed Description

this class implements: (1) parallel decoding: split the test file, initiate DecoderThread, wait and merge the decoding results (2) non-parallel decoding is a special case of parallel decoding

Author:

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

Version:

$LastChangedDate$

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Constructor & Destructor Documentation

joshua.decoder.DecoderFactory.DecoderFactory	(	List< GrammarFactory >	grammarFactories,
		boolean	useMaxLMCostForOOV,
		List< FeatureFunction >	featureFunctions,
		List< StateComputer >	stateComputers
	)

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Member Function Documentation

void joshua.decoder.DecoderFactory.decodeTestSet	(	String	testFile,
		String	nbestFile,
		String	oracleFile
	)

This is the public-facing method to decode a set of sentences. This automatically detects whether we should run the decoder in parallel or not.

(Matt Post, August 2011) This needs to be rewritten. The proper way to do it is to put all the sentences in a queue or wrap access to them in a thread-safe class. Then start the decoder threads. Each thread obtains the sentece to decode and deposits it somewhere. Deposits are then accumulated and output sequentially.

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HyperGraph joshua.decoder.DecoderFactory.getHyperGraphForSentence

(

String

sentence

)

Decode a single sentence and return its hypergraph.

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Member Data Documentation

Thread [] joshua.decoder.DecoderFactory.decoderThreads [private]

List<FeatureFunction> joshua.decoder.DecoderFactory.featureFunctions = null [private]

List<GrammarFactory> joshua.decoder.DecoderFactory.grammarFactories = null [private]

final Logger joshua.decoder.DecoderFactory.logger = Logger.getLogger(DecoderFactory.class.getName()) [static, private]

List<StateComputer> joshua.decoder.DecoderFactory.stateComputers [private]

boolean joshua.decoder.DecoderFactory.useMaxLMCostForOOV = false [private]