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java.lang.Objectdanbikel.parser.BaseNPAwareShifter
public class BaseNPAwareShifter
An implementation of the Shift interface that does not shift punctuation into the history when the current parent node label is that of a base NP.
Treebank.isBaseNP(Symbol)
,
Treebank.isPunctuation(Symbol)
Constructor Summary | |
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BaseNPAwareShifter()
Constructs an instance of this base NP–aware shifter. |
Method Summary | |
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void |
shift(TrainerEvent event,
SexpList list,
Sexp prevMod)
The previous modifier is not shifted into the history if the current parent (as determined by TrainerEvent.parent() ) is a base
NP and the previous modifier is punctuation. |
void |
shift(TrainerEvent event,
WordList wordList,
Word prevWord)
The head word of the previous modifier is not shifted into the history if the current parent (as determined by TrainerEvent.parent() ) is a base NP and the previous modifier is
punctuation. |
boolean |
skip(Item item,
Sexp prevMod)
The previous modifier is skipped (not included in the construction of the history) if the current parent (as determined by CKYItem.label() )
is a base NP and the previous modifier is punctuation. |
boolean |
skip(Item item,
Word prevWord)
The head word of the previous modifier is skipped (not included in the construction of the history) ifthe current parent (as determined by CKYItem.label() ) is a base NP and the previous modifier is punctuation. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public BaseNPAwareShifter()
Method Detail |
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public void shift(TrainerEvent event, SexpList list, Sexp prevMod)
TrainerEvent.parent()
) is a base
NP and the previous modifier is punctuation.
shift
in interface Shift
event
- the TrainerEvent whose history is to be updatedlist
- the current history of previously-generated modifiersprevMod
- the previously-generated modifierTreebank.isBaseNP(Symbol)
,
Treebank.isPunctuation(Symbol)
public void shift(TrainerEvent event, WordList wordList, Word prevWord)
TrainerEvent.parent()
) is a base NP and the previous modifier is
punctuation.
shift
in interface Shift
event
- the TrainerEvent whose history is to be updatedwordList
- the current history of previously-generated modifier
head wordsprevWord
- the head word of the previously-generated modifierTreebank.isBaseNP(Symbol)
,
Treebank.isPunctuation(Symbol)
public boolean skip(Item item, Sexp prevMod)
CKYItem.label()
)
is a base NP and the previous modifier is punctuation.
skip
in interface Shift
item
- the CKYItem object whose history is being constructedprevMod
- the previously-generated modifier
Treebank.isBaseNP(Symbol)
,
Treebank.isPunctuation(Symbol)
public boolean skip(Item item, Word prevWord)
CKYItem.label()
) is a base NP and the previous modifier is punctuation.
skip
in interface Shift
item
- the CKYItem object whose history is being constructedprevWord
- the head word of the previously-generated modifier
Treebank.isBaseNP(Symbol)
,
Treebank.isPunctuation(Symbol)
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