Package opennlp.tools.parser.treeinsert

Class Parser

java.lang.Object

opennlp.tools.parser.AbstractBottomUpParser

opennlp.tools.parser.treeinsert.Parser

All Implemented Interfaces:

Parser

public class Parser
extends AbstractBottomUpParser

Built/attach parser. Nodes are built when their left-most child is encountered. Subsequent children are attached as daughters. Attachment is based on node in the right-frontier of the tree. After each attachment or building, nodes are assesed as either complete or incomplete. Complete nodes are no longer elligable for daughter attachment. Complex modifiers which produce additional node levels of the same type are attached with sister-adjunction. Attachment can not take place higher in the right-frontier than an incomplete node.

Field Summary

Fields

Modifier and Type	Field	Description
static String	ATTACH_DAUGHTER	Outcome used when a node should be attached as a daughter to another node.
static String	ATTACH_SISTER	Outcome used when a node should be attached as a sister to another node.
static String	BUILT	Label used to distinguish build nodes from non-built nodes.
static String	DONE	Outcome used when a constituent needs an no additional parent node/building.
static String	NON_ATTACH	Outcome used when a node should not be attached to another node.

Fields inherited from class opennlp.tools.parser.AbstractBottomUpParser

COMPLETE, CONT, defaultAdvancePercentage, defaultBeamSize, INC_NODE, INCOMPLETE, OTHER, START, TOK_NODE, TOP_NODE, ZERO

Constructor Summary

Constructors

Constructor	Description
Parser(ParserModel model)
Parser(ParserModel model, int beamSize, double advancePercentage)

Method Summary

Modifier and Type	Method	Description
static List<Parse>	getRightFrontier(Parse root, Set<String> punctSet)	Returns the right frontier of the specified parse tree with nodes ordered from deepest to shallowest.
static ParserModel	train(String languageCode, ObjectStream<Parse> parseSamples, HeadRules rules, int iterations, int cut)
static ParserModel	train(String languageCode, ObjectStream<Parse> parseSamples, HeadRules rules, TrainingParameters mlParams)

Methods inherited from class opennlp.tools.parser.AbstractBottomUpParser

buildDictionary, buildDictionary, collapsePunctuation, parse, parse, setErrorReporting, setParents

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DONE

public static final String DONE

Outcome used when a constituent needs an no additional parent node/building.

See Also:

Constant Field Values

ATTACH_SISTER

public static final String ATTACH_SISTER

Outcome used when a node should be attached as a sister to another node.

See Also:

Constant Field Values

ATTACH_DAUGHTER

public static final String ATTACH_DAUGHTER

Outcome used when a node should be attached as a daughter to another node.

See Also:

Constant Field Values

NON_ATTACH

public static final String NON_ATTACH

Outcome used when a node should not be attached to another node.

See Also:

Constant Field Values

BUILT

public static final String BUILT

Label used to distinguish build nodes from non-built nodes.

See Also:

Constant Field Values

Constructor Detail

Parser

public Parser(ParserModel model,
              int beamSize,
              double advancePercentage)

Parser

public Parser(ParserModel model)

Method Detail

getRightFrontier

public static List<Parse> getRightFrontier(Parse root,
                                           Set<String> punctSet)

Returns the right frontier of the specified parse tree with nodes ordered from deepest to shallowest.

Parameters:

root - The root of the parse tree.

Returns:

The right frontier of the specified parse tree.

train

public static ParserModel train(String languageCode,
                                ObjectStream<Parse> parseSamples,
                                HeadRules rules,
                                TrainingParameters mlParams)
                         throws IOException

Throws:

IOException

train

public static ParserModel train(String languageCode,
                                ObjectStream<Parse> parseSamples,
                                HeadRules rules,
                                int iterations,
                                int cut)
                         throws IOException

Throws:

IOException