info.ephyra.questionanalysis
Class AnswerTypeTester

java.lang.Object
  info.ephyra.questionanalysis.AnswerTypeTester

public class AnswerTypeTester
extends java.lang.Object

A simple pattern-based approach for determining the expected answer types of a question.

The answer types and the patterns that identify questions asking for the respective types are defined in a resource file.

The patterns for different answer types can be overlapping, thus a question can be assigned more than one type.

Version:

2006-06-10

Author:

Nico Schlaefer

Field Summary

private static java.util.ArrayList<java.lang.String>	answerTypes Answer types that are supported by the tester.
private static java.util.ArrayList<java.util.regex.Pattern>	patterns Patterns identifying questions asking for these types.

Constructor Summary

AnswerTypeTester()

Method Summary

static java.lang.String[]	getAnswerTypes(java.lang.String qn, java.lang.String stemmed) Determines the expected answer types for a question.
static boolean	loadAnswerTypes(java.lang.String filename) Loads the supported answer types and the corresponding patterns from a resource file.

Methods inherited from class java.lang.Object

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

Field Detail

answerTypes

private static java.util.ArrayList<java.lang.String> answerTypes

Answer types that are supported by the tester.

patterns

private static java.util.ArrayList<java.util.regex.Pattern> patterns

Patterns identifying questions asking for these types.

Constructor Detail

AnswerTypeTester

public AnswerTypeTester()

Method Detail

loadAnswerTypes

public static boolean loadAnswerTypes(java.lang.String filename)

Loads the supported answer types and the corresponding patterns from a resource file.

Parameters:

filename - resource file

Returns:

true, iff the answer types and patterns were loaded successfully

getAnswerTypes

public static java.lang.String[] getAnswerTypes(java.lang.String qn,
                                                java.lang.String stemmed)

Determines the expected answer types for a question.

Parameters:

qn - normalized question string

stemmed - stemmed question string

Returns:

expected answer types