joshua.decoder.ff.tm.RuleCollection Interface Reference

Inheritance diagram for joshua.decoder.ff.tm.RuleCollection:

List of all members.

Public Member Functions
void	sortRules (List< FeatureFunction > l_models)
List< Rule >	getSortedRules ()
List< Rule >	getRules ()
int[]	getSourceSide ()
int	getArity ()

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Detailed Description

Represents a set of rules under a particular TrieGrammar node. Therefore, all the rules under a RuleCollection will share:

• arity
• source side

Author:

Zhifei Li

Lane Schwartz

Version:

$LastChangedDate$

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Member Function Documentation

int joshua.decoder.ff.tm.RuleCollection.getArity

(

)

Gets the number of nonterminals in the source side of the rules in this RuleCollection. The source side is the same for all the rules in the RuleCollection, so the arity will also be the same for all of these rules.

Returns:

the (common) number of nonterminals in the source side of the rules in this RuleCollection

Implemented in joshua.decoder.ff.tm.packed.PackedGrammar.PackedTrie, and joshua.decoder.ff.tm.BasicRuleCollection.

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List<Rule> joshua.decoder.ff.tm.RuleCollection.getRules

(

)

get the list of rules (which may not be sorted or not)

Implemented in joshua.decoder.ff.tm.packed.PackedGrammar.PackedTrie, and joshua.decoder.ff.tm.BasicRuleCollection.

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List<Rule> joshua.decoder.ff.tm.RuleCollection.getSortedRules

(

)

TODO: now, we assume this function will be called only after all the rules have been read; this method need to be synchronized as we will call this function only after the decoding begins to avoid the synchronized method, we should call this once the grammar is finished

public synchronized ArrayList<Rule> get_sorted_rules(){ l_models: if it is non-null, then the rules will be sorted using the new feature functions (or new weight), otherwise, just return a sorted list based on the last time of feature functions

Only CubePruning requires that rules are sorted based on est_cost (confirmed by zhifei)

Implemented in joshua.decoder.ff.tm.packed.PackedGrammar.PackedTrie, and joshua.decoder.ff.tm.BasicRuleCollection.

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int [] joshua.decoder.ff.tm.RuleCollection.getSourceSide

(

)

Gets the source side for all rules in this RuleCollection. This source side is the same for all the rules in the RuleCollection.

Returns:

the (common) source side for all rules in this RuleCollection

Implemented in joshua.decoder.ff.tm.packed.PackedGrammar.PackedTrie, and joshua.decoder.ff.tm.BasicRuleCollection.

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void joshua.decoder.ff.tm.RuleCollection.sortRules

(

List< FeatureFunction >

l_models

)

Sorts the grammar rules in this collection using the provided feature functions.

Parameters:

l_models

Feature function models to use during sorting.

Implemented in joshua.decoder.ff.tm.packed.PackedGrammar.PackedTrie, and joshua.decoder.ff.tm.BasicRuleCollection.

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