tml.utils
Class StanfordUtils

java.lang.Object
  tml.utils.StanfordUtils

public class StanfordUtils
extends java.lang.Object

Class to consolidate the calls to the Stanford parser

Author:

Jorge Villalon

Constructor Summary

StanfordUtils()

Method Summary

static java.util.List<java.lang.String>	calculateTypedDependencies(edu.stanford.nlp.trees.Tree tree) Calculates the typed dependencies from a grammatical tree
static java.lang.String	cleanNodeContent(java.lang.String content) Added to remove punctuation from the strings extracted from the tree
static java.util.List<java.lang.String>	extractNouns(edu.stanford.nlp.trees.Tree t)
static java.util.List<java.lang.String>	extractVerbs(edu.stanford.nlp.trees.Tree t)
static java.lang.String	getPennString(edu.stanford.nlp.trees.Tree tree)
static java.lang.String	getPennTagFirstBranch(edu.stanford.nlp.trees.Tree orig, edu.stanford.nlp.trees.Tree t, edu.stanford.nlp.trees.Tree pt)
static java.lang.String	getPennTagMinimalPhrase(edu.stanford.nlp.trees.Tree t)
static edu.stanford.nlp.trees.Tree	getPennTree(java.lang.String text)
static edu.stanford.nlp.trees.Tree	getTreeFromString(java.lang.String passageId, java.lang.String pennTreeString) Calculates a Penn grammatical tree from its string representation
static java.lang.String	nodeContent(edu.stanford.nlp.trees.Tree t)
static java.lang.String	nodeContent(edu.stanford.nlp.trees.Tree t, edu.stanford.nlp.trees.Tree pv)
static java.lang.String	removeDeterminersFromNounPhrase(java.lang.String phrase)

Methods inherited from class java.lang.Object

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

Constructor Detail

StanfordUtils

public StanfordUtils()

Method Detail

extractVerbs

public static java.util.List<java.lang.String> extractVerbs(edu.stanford.nlp.trees.Tree t)

Parameters:

t - a grammar tree to extract the verbs

Returns:

a list of verbs in the tree, an empty list if nothing is found.

nodeContent

public static java.lang.String nodeContent(edu.stanford.nlp.trees.Tree t,
                                           edu.stanford.nlp.trees.Tree pv)

Parameters:

t - the tree to which extract the content

Returns:

the string with the content of the tree

extractNouns

public static java.util.List<java.lang.String> extractNouns(edu.stanford.nlp.trees.Tree t)

Parameters:

t - the grammar tree

Returns:

a list with all concepts identified in a tree

cleanNodeContent

public static java.lang.String cleanNodeContent(java.lang.String content)

Added to remove punctuation from the strings extracted from the tree

Parameters:

content - any string containing punctuation at beginning or end

Returns:

the string without trailing or tailing punctuation

nodeContent

public static java.lang.String nodeContent(edu.stanford.nlp.trees.Tree t)

Parameters:

t - the tree to which extract the content

Returns:

the string with the content of the tree

getTreeFromString

public static edu.stanford.nlp.trees.Tree getTreeFromString(java.lang.String passageId,
                                                            java.lang.String pennTreeString)

Calculates a Penn grammatical tree from its string representation

Parameters:

pennTreeString - the string

Returns:

the grammar tree

Throws:

java.lang.Exception

calculateTypedDependencies

public static java.util.List<java.lang.String> calculateTypedDependencies(edu.stanford.nlp.trees.Tree tree)

Calculates the typed dependencies from a grammatical tree

Parameters:

tree - the grammatical tree

removeDeterminersFromNounPhrase

public static java.lang.String removeDeterminersFromNounPhrase(java.lang.String phrase)
                                                        throws java.io.IOException

Throws:

java.io.IOException

getPennString

public static java.lang.String getPennString(edu.stanford.nlp.trees.Tree tree)

getPennTree

public static edu.stanford.nlp.trees.Tree getPennTree(java.lang.String text)
                                               throws java.io.IOException

Throws:

java.io.IOException

getPennTagMinimalPhrase

public static java.lang.String getPennTagMinimalPhrase(edu.stanford.nlp.trees.Tree t)

getPennTagFirstBranch

public static java.lang.String getPennTagFirstBranch(edu.stanford.nlp.trees.Tree orig,
                                                     edu.stanford.nlp.trees.Tree t,
                                                     edu.stanford.nlp.trees.Tree pt)