SpellingStandardizer.java

package edu.northwestern.at.utils.corpuslinguistics.spellingstandardizer;

/*	Please see the license information at the end of this file. */

import java.io.*;
import java.net.*;
import java.util.*;

import edu.northwestern.at.utils.*;

/**	Interface for a Spelling Standardizer.
 */

public interface SpellingStandardizer
{
	/**	Loads alternate spellings from a URL.
	 *
	 *	@param	url			URL containing alternate spellings to
	 *							standard spellings mappings.
	 *	@param	encoding	Character set encoding for spellings
	 *	@param	delimChars	Delimiter characters separating spelling pairs
	 */

	public void loadAlternativeSpellings
	(
		URL url ,
		String encoding ,
		String delimChars
	)
		throws IOException;

	/**	Loads alternative spellings from a reader.
	 *
	 *	@param	reader		The reader.
	 *	@param	delimChars	Delimiter characters separating spelling pairs.
	 */

	public void loadAlternativeSpellings
	(
		Reader reader ,
		String delimChars
	)
		throws IOException;

	/**	Load alternate to standard spellings by word class.
	 *
	 *	@param	url			URL of alternative spellings by word class.
	 *	@param	encoding	Character set encoding for spellings
	 */

	public void loadAlternativeSpellingsByWordClass
	(
		URL url ,
		String encoding
	)
		throws IOException;

	/**	Loads standard spellings from a URL.
	 *
	 *	@param	url			URL containing standard spellings
	 *	@param	encoding	Character set encoding for spellings
	 */

	public void loadStandardSpellings
	(
		URL url ,
		String encoding
	)
		throws IOException;

	/**	Loads standard spellings from a reader.
	 *
	 *	@param	reader		The reader.
	 */

	public void loadStandardSpellings
	(
		Reader reader
	)
		throws IOException;

	/**	Sets map which maps alternate spellings to standard spellings.
	 *
	 *	@param	standardMappedSpellings	TaggedStrings with alternate
	 *											spellings as keys and standard
	 *											spellings as tag values.
	 */

	public void setMappedSpellings( TaggedStrings standardMappedSpellings );

	/**	Sets standard spellings.
	 *
	 *	@param	standardSpellings	Set of standard spellings.
	 */

	public void setStandardSpellings( Set<String> standardSpellings );

	/**	Add a mapped spelling.
	 *
	 *	@param	alternateSpelling	The alternate spelling.
	 *	@param	standardSpelling	The corresponding standard spelling.
	 */

	public void addMappedSpelling
	(
		String alternateSpelling ,
		String standardSpelling
	);

	/**	Add a standard spelling.
	 *
	 *	@param	standardSpelling	A standard spelling.
	 */

	public void addStandardSpelling
	(
		String standardSpelling
	);

	/**	Add standard spellings from a collection.
	 *
	 *	@param	standardSpellings	A collection of standard spellings.
	 */

	public void addStandardSpellings
	(
		Collection<String> standardSpellings
	);

	/**	Preprocess spelling.
	 *
	 *	@param	spelling	Spelling to preprocess before standardization.
	 *
	 *	@return				Preprocessed spelling, ready for standardization.
	 */

	public String preprocessSpelling( String spelling );

	/**	Returns standard spellings given a spelling.
	 *
	 *	@param	spelling	The spelling.
	 *
	 *	@return				The standard spellings as an array of String.
	 */

	 public String[] standardizeSpelling( String spelling );

	/**	Returns a standard spelling given a standard or alternate spelling.
	 *
	 *	@param	spelling	The spelling.
	 *	@param	wordClass	The word class.
	 *
	 *	@return				The standard spelling.
	 */

	 public String standardizeSpelling( String spelling , String wordClass );

	/**	Fix capitalization of standardized spelling.
	 *
	 *	@param	spelling			The original spelling.
	 *	@param	standardSpelling	The candidate standard spelling.
	 *
	 *	@return						Standard spelling with initial
	 *								capitalization matching original
	 *								spelling.
	 */

	public String fixCapitalization
	(
		String spelling ,
		String standardSpelling
	);

	 /** Returns number of alternate spellings.
	  *
	  *	@return		The number of alternate spellings.
	  */

	public int getNumberOfAlternateSpellings();

	 /** Returns number of alternate spellings by word class.
	  *
	  *	@return		int array with two entries.
	  *				[0]	=	The number of alternate spellings word classes.
	  *				[1]	=	The number of alternate spellings in the
	  *						word classes.
	  */

	public int[] getNumberOfAlternateSpellingsByWordClass();

	 /** Returns number of standard spellings.
	  *
	  *	@return		The number of standard spellings.
	  */

	public int getNumberOfStandardSpellings();

	/**	Return the spelling map.
	 *
	 *	@return		The spelling map as a TaggedStrings object.
	 *				May be null if this standardizer does not use such a
	 *				map.
	 */

	public TaggedStrings getMappedSpellings();

	/**	Return the standard spellings.
	 *
	 *	@return		The standard spellings as a Set.  May be null.
	 */

	public Set<String> getStandardSpellings();
}

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