Package org.aksw.qa.annotation.comparison

Class ComparisonUtils

java.lang.Object

org.aksw.qa.annotation.comparison.ComparisonUtils

public class ComparisonUtils
extends Object

Offers functionality to extract superlatives and comparatives from strings and functions to retrieve properties and the order for a comparative or superlative.

Field Summary

Fields

Modifier and Type	Field	Description
private static String	COMPARATIVETAG
private static edu.stanford.nlp.pipeline.StanfordCoreNLP	PIPELINE
private static String	SUPERLATIVETAG

Constructor Summary

Constructors

Constructor	Description
ComparisonUtils()

Method Summary

Modifier and Type	Method	Description
ArrayList<String>	getComparatives(String question)	Retrieves comparatives from the string.
String	getOrder(String comparison)	Returns the order for the given superlative or comparative which can then be used in SPARQL queries.
ArrayList<String>	getProperties(String comparison)	Returns a list of properties for the given superlative or comparative (also works for the basic form of the supported adjectives).
ArrayList<String>	getSuperlatives(String question)	Retrieves superlatives from the string.
private ArrayList<String>	getWords(String question, String tag)	Retrieves a part of speech from the given string, depending on the parameter tag.

Methods inherited from class java.lang.Object

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

Field Details

PIPELINE

private static final edu.stanford.nlp.pipeline.StanfordCoreNLP PIPELINE

COMPARATIVETAG

private static final String COMPARATIVETAG

See Also:

Constant Field Values

SUPERLATIVETAG

private static final String SUPERLATIVETAG

See Also:

Constant Field Values

Constructor Details

ComparisonUtils

public ComparisonUtils()

Method Details

getProperties

public ArrayList<String> getProperties(String comparison)

Returns a list of properties for the given superlative or comparative (also works for the basic form of the supported adjectives). Supported adjectives can be found in ComparisonEnum.

Parameters:

comparison - Adjective.

Returns:

List of properties for the given adjective, null if the adjective is not supported.

getOrder

public String getOrder(String comparison)

Returns the order for the given superlative or comparative which can then be used in SPARQL queries. Supported adjectives can be found in ComparisonEnum.

Parameters:

comparison - A superlative or comparative.

Returns:

Order for the given superlative or comparative, null if it is not supported.

getComparatives

public ArrayList<String> getComparatives(String question)

Retrieves comparatives from the string. Calls getWords(String, String).

Parameters:

question - String to retrieve comparatives from.

Returns:

List of the retrieved comparatives.

getSuperlatives

public ArrayList<String> getSuperlatives(String question)

Retrieves superlatives from the string. Calls getWords(String, String).

Parameters:

question - String to retrieve superlatives from.

Returns:

List of the retrieved superlatives.

getWords

private ArrayList<String> getWords(String question,
 String tag)

Retrieves a part of speech from the given string, depending on the parameter tag. JJR for comparatives and JJS for superlatives.

Parameters:

question - String to retrieve words from.

tag - JJR for comparatives and JJS for superlatives.

Returns:

List of the retrieved words.