monq.ie

Class Term2Re

java.lang.Object

monq.ie.Term2Re

public class Term2Re
extends java.lang.Object

is a collection of static functions to support the translation of a multi word terms into regular expression which matches that term as well as orthographic variations.

Version:

$Revision: 1.22 $, $Date: 2005-07-08 13:01:26 $

Author:

(C) 2003 Harald Kirsch

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	RE_SEP_WORD 2nd parameter passed to createConverter() when creating the default converter used by convert().
static java.lang.String	RE_SPLIT_WORD first parameter passed to createConverter() when creating the default converter used by convert().
static java.lang.String	RE_TRAIL_CONTEXT 3rd parameter passed to createConverter() when creating the default converter used by convert().
static ReParser	reParser 4th parameter passed to createrConverter() when creating the default converter used by convert().

Constructor Summary

Constructors

Constructor and Description
Term2Re()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	convert(java.lang.String s) converts a multi word term into a regular expression matching that term as well as obvious generalizations.
static DfaRun	createConverter(java.lang.String wordSplitRe, java.lang.String wordSepRe, java.lang.String trailContextRe, ReParser rp) creates a DfaRun able to convert a multi word term into a regular expression which matches obvious orthographical variations of that term.
static void	main(java.lang.String[] argv) applies convert to every line read from System.in and writes the result to System.out.

Methods inherited from class java.lang.Object

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

Field Detail

RE_SPLIT_WORD

public static final java.lang.String RE_SPLIT_WORD

first parameter passed to createConverter() when creating the default converter used by convert().

See Also:

Constant Field Values

RE_SEP_WORD

public static final java.lang.String RE_SEP_WORD

2nd parameter passed to createConverter() when creating the default converter used by convert().

See Also:

Constant Field Values

RE_TRAIL_CONTEXT

public static final java.lang.String RE_TRAIL_CONTEXT

3rd parameter passed to createConverter() when creating the default converter used by convert().

See Also:

Constant Field Values

reParser

public static final ReParser reParser

4th parameter passed to createrConverter() when creating the default converter used by convert().

Constructor Detail

Term2Re

public Term2Re()

Method Detail

createConverter

public static DfaRun createConverter(java.lang.String wordSplitRe,
                                     java.lang.String wordSepRe,
                                     java.lang.String trailContextRe,
                                     ReParser rp)
                              throws ReSyntaxException

creates a DfaRun able to convert a multi word term into a regular expression which matches obvious orthographical variations of that term. You may then use the machines filter functions to convert a multi word term to a regular expression. The resulting regular expression will match generalisations of the given term, e.g.

• capitalization of words
• pluralization of words, including "ies" as the plural of "y"
• matching of "e" alone where "ae" is in the mwt (anemia vs. anaemia)

Note: This comment does not necessarily keep up with changes to the code.-(

Parameters:

wordSplitRe - is the regular expression used to separate an incoming term into individual words. See RE_SPLIT_WORD for an example.

wordSepRe - is a regular expression put between the regular expressions generated for individual words of the multi word term.

rp - must be an ReParser of the type for which the regular expression is generated. This is necessary to be able to escape characters in original multi word term properly.

trailContextRe - is a regular expression which will be finally appended to the result.

Throws:

ReSyntaxException

convert

public static java.lang.String convert(java.lang.String s)

converts a multi word term into a regular expression matching that term as well as obvious generalizations. The algorithm is not finalized yet. The converter used is created with createConverter(java.lang.String, java.lang.String, java.lang.String, monq.jfa.ReParser) with RE_SEP_WORD, RE_SPLIT_WORD and RE_TRAIL_CONTEXT as parameters.

main

public static void main(java.lang.String[] argv)
                 throws java.io.IOException

applies convert to every line read from System.in and writes the result to System.out.

Throws:

java.io.IOException