edu.northwestern.at.utils.corpuslinguistics.spellingstandardizer
Class ExtendedSearchSpellingStandardizer

java.lang.Object
  edu.northwestern.at.utils.IsCloseableObject
      edu.northwestern.at.utils.corpuslinguistics.spellingstandardizer.AbstractSpellingStandardizer
          edu.northwestern.at.utils.corpuslinguistics.spellingstandardizer.SimpleSpellingStandardizer
              edu.northwestern.at.utils.corpuslinguistics.spellingstandardizer.ExtendedSimpleSpellingStandardizer
                  edu.northwestern.at.utils.corpuslinguistics.spellingstandardizer.ExtendedSearchSpellingStandardizer

All Implemented Interfaces:

SpellingStandardizer, UsesLogger

public class ExtendedSearchSpellingStandardizer
extends ExtendedSimpleSpellingStandardizer
implements SpellingStandardizer

ExtendedSearchSpellingStandardizer: extended search spelling standardizer.

ExtendedSearchSpellingStandardizer uses spelling correction methods to try to find a good list of suggested standardized spellings.

Field Summary

protected DoubleMetaphone	doubleMetaphone Double metaphone encoder.
protected SpellingChecker	spellingChecker Spelling checker.

Fields inherited from class edu.northwestern.at.utils.corpuslinguistics.spellingstandardizer.ExtendedSimpleSpellingStandardizer

gapFiller

Fields inherited from class edu.northwestern.at.utils.corpuslinguistics.spellingstandardizer.AbstractSpellingStandardizer

alternateSpellingsWordClasses, defaultSpellingsByWordClassFileName, lexicon, logger, mappedSpellings, spellingsByWordClass, standardSpellingSet

Constructor Summary

ExtendedSearchSpellingStandardizer()
Create extended search spelling standardizer.

Method Summary

java.lang.String[]	applyHeuristics(java.lang.String spelling) Apply heuristics to spellings to see if we can find a match..
void	createDictionaries() Creates dictionaries from spelling lists.
java.lang.String	getBestSuggestedSpelling(java.lang.String spelling) Get best suggested spelling.
java.util.List<ScoredString>	getScoredSuggestedSpellings(java.lang.String spelling) Return suggested spellings.
java.lang.String[]	getSuggestedSpellings(java.lang.String spelling) Return suggested spellings.
void	loadAlternativeSpellings(java.io.Reader reader, java.lang.String delimChars) Loads alternative spellings from a reader.
void	loadStandardSpellings(java.io.Reader reader) Loads standard spellings from a reader.
java.lang.String	longSVariant(java.lang.String spelling) Apply "long s" heuristics to a spelling.
java.lang.String	preprocessSpelling(java.lang.String spelling) Preprocess spelling.
java.lang.String	simpleReplacement(java.lang.String spelling, java.lang.String pattern, java.lang.String replacement) Apply simple string replacement.
java.lang.String[]	standardizeSpelling(java.lang.String spelling) Returns standard spellings given a spelling.
java.lang.String	toString() Return standardizer description.

Methods inherited from class edu.northwestern.at.utils.corpuslinguistics.spellingstandardizer.ExtendedSimpleSpellingStandardizer

doStandardizeSpelling, fixGaps

Methods inherited from class edu.northwestern.at.utils.corpuslinguistics.spellingstandardizer.AbstractSpellingStandardizer

addCachedSpelling, addMappedSpelling, addStandardSpelling, addStandardSpellings, fixCapitalization, getLexicon, getLogger, getMappedSpellings, getNumberOfAlternateSpellings, getNumberOfAlternateSpellingsByWordClass, getNumberOfStandardSpellings, getStandardSpellings, loadAlternativeSpellings, loadAlternativeSpellingsByWordClass, loadStandardSpellings, setLexicon, setLogger, setMappedSpellings, setStandardSpellings, standardizeSpelling

Methods inherited from class edu.northwestern.at.utils.IsCloseableObject

close

Methods inherited from class java.lang.Object

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

Methods inherited from interface edu.northwestern.at.utils.corpuslinguistics.spellingstandardizer.SpellingStandardizer

addMappedSpelling, addStandardSpelling, addStandardSpellings, fixCapitalization, getMappedSpellings, getNumberOfAlternateSpellings, getNumberOfAlternateSpellingsByWordClass, getNumberOfStandardSpellings, getStandardSpellings, loadAlternativeSpellings, loadAlternativeSpellingsByWordClass, loadStandardSpellings, setMappedSpellings, setStandardSpellings, standardizeSpelling

Field Detail

spellingChecker

protected SpellingChecker spellingChecker

Spelling checker.

doubleMetaphone

protected DoubleMetaphone doubleMetaphone

Double metaphone encoder.

Constructor Detail

ExtendedSearchSpellingStandardizer

public ExtendedSearchSpellingStandardizer()

Create extended search spelling standardizer.

Method Detail

createDictionaries

public void createDictionaries()

Creates dictionaries from spelling lists.

loadAlternativeSpellings

public void loadAlternativeSpellings(java.io.Reader reader,
                                     java.lang.String delimChars)
                              throws java.io.IOException

Loads alternative spellings from a reader.

Specified by:

loadAlternativeSpellings in interface SpellingStandardizer

Overrides:

loadAlternativeSpellings in class AbstractSpellingStandardizer

Parameters:

reader - The reader.

delimChars - Delimiter characters separating spelling pairs.

Throws:

java.io.IOException

loadStandardSpellings

public void loadStandardSpellings(java.io.Reader reader)
                           throws java.io.IOException

Loads standard spellings from a reader.

Specified by:

loadStandardSpellings in interface SpellingStandardizer

Overrides:

loadStandardSpellings in class AbstractSpellingStandardizer

Parameters:

reader - The reader.

Throws:

java.io.IOException

applyHeuristics

public java.lang.String[] applyHeuristics(java.lang.String spelling)

Apply heuristics to spellings to see if we can find a match..

Parameters:

spelling - Spelling to which to apply heuristics.

Returns:

Near matches after applying heuristics.

simpleReplacement

public java.lang.String simpleReplacement(java.lang.String spelling,
                                          java.lang.String pattern,
                                          java.lang.String replacement)

Apply simple string replacement.

Parameters:

spelling - The spelling.

pattern - String of characters to look for in spelling.

replacement - Replacement characters.

Returns:

If revised spelling in spelling map, return revised spelling. Otherwise return empty string.

longSVariant

public java.lang.String longSVariant(java.lang.String spelling)

Apply "long s" heuristics to a spelling.

Parameters:

spelling - Spelling suggestion to which to apply heuristics.

Returns:

Revised spelling.

preprocessSpelling

public java.lang.String preprocessSpelling(java.lang.String spelling)

Preprocess spelling.

Specified by:

preprocessSpelling in interface SpellingStandardizer

Overrides:

preprocessSpelling in class ExtendedSimpleSpellingStandardizer

Parameters:

spelling - Spelling to preprocess.

Returns:

Preprocessed spelling.

standardizeSpelling

public java.lang.String[] standardizeSpelling(java.lang.String spelling)

Returns standard spellings given a spelling.

Specified by:

standardizeSpelling in interface SpellingStandardizer

Overrides:

standardizeSpelling in class ExtendedSimpleSpellingStandardizer

Parameters:

spelling - The spelling.

Returns:

The standard spellings as an array of String.

getBestSuggestedSpelling

public java.lang.String getBestSuggestedSpelling(java.lang.String spelling)

Get best suggested spelling.

Parameters:

spelling - The spelling for which to return suggestion.

Returns:

Best (by score) suggested spellings.

getScoredSuggestedSpellings

public java.util.List<ScoredString> getScoredSuggestedSpellings(java.lang.String spelling)

Return suggested spellings.

Parameters:

spelling - The spelling for which to return suggestions.

Returns:

List suggested spellings with scores.

getSuggestedSpellings

public java.lang.String[] getSuggestedSpellings(java.lang.String spelling)

Return suggested spellings.

Parameters:

spelling - The spelling for which to return suggestions.

Returns:

Array of strings of suggested spellings.

toString

public java.lang.String toString()

Return standardizer description.

Overrides:

toString in class ExtendedSimpleSpellingStandardizer

Returns:

Standardizer description.