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ASV Toolbox is a modular collection of tools for the exploration of written language data. They work either on word lists or text and solve several linguistic classification and clustering tasks. The topics covered contain language detection, POS-tagging, base form reduction, named entity recognition, and terminology extraction. On a more abstract level, the algorithms deal with various kinds of word similarity, using pattern based and statistical approaches. The collection can be used to work on large real world data sets as well as for studying the underlying algorithms. The ASV Toolbox can work on plain text files and connect to a MySQL database. While it is especially designed to work with corpora of the Leipzig Corpora Collection, it can easily be adapted to other sources.
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/*******************************************************************************
* The MIT License (MIT)
* Copyright (c) 2007, University of Leipzig, Institut für Informatik,
* Abteilung Autmatische Sprachverarbeitung
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
******************************************************************************/
/*
*
DefaultWordTokenizer.java
*
* Created on 16. M�rz 2006, 19:55
*
* Diese Klasse ist im Rahmen meiner Diplomarbeit zum Thema
* "fensterbasierte Kookkurrenzen" entstanden. Die Rechte an dieser
* Klasse liegen beim Lehrstuhl f�r
*
* Automatische Sprachverarbeitung
* Augustusplatz 10/11
* 04109 Leipzig
*
* http://www.asv.informatik.uni-leipzig.de
*
* Betreuer : Prof. Gerhard Heyer, Dipl.-Inf. Stefan Bordag
* Konzeption : Dipl.-Inf. Stefan Bordag, Marco B�chler
* Entwicklung : Marco B�chler
*
*
*/
package de.uni_leipzig.asv.utils.tokenizer;
import java.util.ArrayList;
import java.util.Iterator;
/**
*
* @author development
*/
public class ImprovedWordTokenizer extends AbstractWordTokenizerImpl {
String strSentenceNumber = null;
boolean boolReplaceNumbers = false;
/** Creates a new instance of DefaultWordTokenizer */
public ImprovedWordTokenizer() {
}
@Override
public String execute(String strLine) {
ArrayList objWhitespacePositions = getWhitespacePositions(strLine);
// ConfigurationContainer.println( "Satz: " + strLine );
Iterator objIter = objWhitespacePositions.iterator();
int intStart = 0;
int intEnd = 0;
StringBuffer objBuffer = new StringBuffer();
while (objIter.hasNext()) {
intEnd = (objIter.next())[0];
if (intEnd - intStart > 0) {
String strWord = strLine.substring(intStart, intEnd);
// ConfigurationContainer.println( "start: " + strWord );
objBuffer.append(processPrefix(strWord));
objBuffer.append(" ");
}
intStart = intEnd + 1;
}
return objBuffer.toString().trim();
}
protected String processPrefix(String strWord) {
if (strWord == null) {
return "";
}
if (strWord.length() == 0) {
return strWord;
}
if (strWord.length() == 1) {
return processSingleNumber(strWord);
}
StringBuffer objBuffer = new StringBuffer();
int length = EXPLIZIT_CUT.length;
int intOffSet = 0;
for (int i = 0; i < length; i++) {
if (strWord.startsWith(EXPLIZIT_CUT[i], intOffSet)) {
intOffSet++;
i = 0;
}
}
if (intOffSet > 0) {
for (int i = 0; i < intOffSet; i++) {
objBuffer.append(strWord.charAt(i));
objBuffer.append(" ");
}
// ConfigurationContainer.println( "hasPrefix: " +
// strWord.substring(intOffSet) );
objBuffer.append(processSuffix(strWord.substring(intOffSet)));
objBuffer.append(" ");
} else {
// ConfigurationContainer.println( "!hasPrefix: " + strWord );
objBuffer.append(processSuffix(strWord));
objBuffer.append(" ");
}
return objBuffer.toString().trim();
}
protected String processSuffix(String strWord) {
if (strWord.length() == 1) {
return processSingleNumber(strWord);
}
StringBuffer objBuffer = new StringBuffer();
int length = EXPLIZIT_CUT.length;
int intOffSet = 0;
int i = 0;
String strTMPWord = new String(strWord);
for (i = 0; i < length; i++) {
if (strTMPWord.endsWith(EXPLIZIT_CUT[i])) {
intOffSet++;
i = 0;
strTMPWord = strTMPWord.substring(0, strTMPWord.length() - 1);
// ConfigurationContainer.println( "hasSuffix0: " +
// strWord.substring(0,strWord.length()-1) );
}
}
if (intOffSet > 0) {
// ConfigurationContainer.println( "hasSuffix: " +
// strWord.substring(0,strWord.length()-intOffSet) );
objBuffer.append(processDotAsPrefix(strWord.substring(0, strWord
.length()
- intOffSet)));
objBuffer.append(" ");
int intStart = strWord.length() - intOffSet;
for (int j = intStart; j < strWord.length(); j++) {
objBuffer.append(strWord.charAt(j));
objBuffer.append(" ");
}
} else {
// ConfigurationContainer.println( "!hasSuffix: " + strWord );
objBuffer.append(processDotAsPrefix(strWord));
objBuffer.append(" ");
}
return objBuffer.toString().trim();
}
protected boolean isSequenceOfDot(String strWord) {
int length = strWord.length();
for (int i = 0; i < length; i++) {
if (strWord.charAt(i) != '.') {
// ConfigurationContainer.println( "is not Seq of ." );
return false;
}
}
// ConfigurationContainer.println( "is Seq of ." );
return true;
}
protected String processDotAsPrefix(String strWord) {
if (strWord.length() == 1 || isSequenceOfDot(strWord)) {
return processSingleNumber(strWord);
}
if (!strWord.startsWith(".")) {
// ConfigurationContainer.println( "not starts .: " + strWord );
StringBuffer objBuffer = new StringBuffer();
objBuffer.append(processDotAsSuffix(strWord));
objBuffer.append(" ");
return objBuffer.toString().trim();
}
// ConfigurationContainer.println( "starts .: " + strWord.substring(1)
// );
StringBuffer objBuffer = new StringBuffer();
objBuffer.append(".");
objBuffer.append(" ");
objBuffer.append(processDotAsSuffix(strWord.substring(1)));
return objBuffer.toString().trim();
}
protected int detectSequenceOfDot(String strWord) {
int length = strWord.length();
int returnLength = 0;
for (int i = length - 1; i >= 0; i--) {
if (strWord.charAt(i) != '.') {
return returnLength;
}
returnLength++;
}
return 0;
}
protected String processDotAsSuffix(String strWord) {
if (strWord.length() == 1 || objAbbrevList.contains(strWord)) {
// ConfigurationContainer.println( "isAbbrev or not relevant: " +
// strWord );
return processSingleNumber(strWord);
}
// word not ends with .
if (!strWord.endsWith(".")) {
// ConfigurationContainer.println( "!!isAbbr: " +
// strWord.substring(0,strWord.length()-1) );
StringBuffer objBuffer = new StringBuffer();
objBuffer.append(processSuffix2(strWord));
objBuffer.append(" ");
return objBuffer.toString().trim();
}
// word ends with .
int intDotSeqSize = detectSequenceOfDot(strWord);
if (intDotSeqSize > 1) {
// ConfigurationContainer.println( "isDotSeq: " +
// strWord.substring(0,strWord.length()-intDotSeqSize) );
StringBuffer objBuffer = new StringBuffer();
objBuffer.append(processSuffix2(strWord.substring(0, strWord
.length()
- intDotSeqSize)));
objBuffer.append(" ");
for (int i = 0; i < intDotSeqSize; i++) {
objBuffer.append(".");
}
return objBuffer.toString().trim();
}
if (needsNumberSplit(strWord)) {
// ConfigurationContainer.println( "!!!!isAbbr: " +
// strWord.substring(0,strWord.length()-1) );
StringBuffer objBuffer = new StringBuffer();
objBuffer.append(processSuffix2(strWord.substring(0, strWord
.length() - 1)));
objBuffer.append(" .");
return objBuffer.toString();
}
if (isNumber(strWord)) {
// ConfigurationContainer.println( "!isAbbr: " +
// strWord.substring(0,strWord.length()) );
StringBuffer objBuffer = new StringBuffer();
objBuffer.append(processSuffix2(strWord.substring(0, strWord
.length())));
// objBuffer.append(".");
return objBuffer.toString();
}
// ConfigurationContainer.println( "!!!!!!!!!!!!!isAbbr: " +
// strWord.substring(0,strWord.length()-1) );
StringBuffer objBuffer = new StringBuffer();
objBuffer.append(processSuffix2(strWord.substring(0,
strWord.length() - 1)));
objBuffer.append(" .");
return objBuffer.toString();
}
protected String processSuffix2(String strWord) {
if (strWord.length() == 1) {
return processSingleNumber(strWord);
}
StringBuffer objBuffer = new StringBuffer();
int length = EXPLIZIT_CUT.length;
int intOffSet = 0;
int i = 0;
String strTMPWord = new String(strWord);
for (i = 0; i < length; i++) {
if (strTMPWord.endsWith(EXPLIZIT_CUT[i])) {
intOffSet++;
i = 0;
strTMPWord = strTMPWord.substring(0, strTMPWord.length() - 1);
// ConfigurationContainer.println( "hasSuffix0: " +
// strWord.substring(0,strWord.length()-1) );
}
}
if (intOffSet > 0) {
// ConfigurationContainer.println( "hasSuffix: " +
// strWord.substring(0,strWord.length()-intOffSet) );
objBuffer.append(processInfixApostrophe(strWord.substring(0,
strWord.length() - intOffSet)));
objBuffer.append(" ");
int intStart = strWord.length() - intOffSet;
for (int j = intStart; j < strWord.length(); j++) {
objBuffer.append(strWord.charAt(j));
objBuffer.append(" ");
}
} else {
// ConfigurationContainer.println( "!hasSuffix: " + strWord );
objBuffer.append(processInfixApostrophe(strWord));
objBuffer.append(" ");
}
return objBuffer.toString().trim();
}
protected boolean needsSplit(String strWord) {
int length = strWord.length();
for (int i = 0; i < length; i++) {
if (!(Character.isLetter(strWord.charAt(i)) || (Character
.getType(strWord.charAt(i)) == Character.OTHER_PUNCTUATION))) {
return false;
}
}
return true;
}
protected boolean needsNumberSplit(String strWord) {
int length = strWord.length();
for (int i = 0; i < length; i++) {
if (!(Character.isDigit(strWord.charAt(i)) || (Character
.getType(strWord.charAt(i)) == Character.OTHER_PUNCTUATION))) {
// ConfigurationContainer.println( "!needsNUmberSplit1: " +
// strWord);
return false;
}
}
/*
* if( strWord.endsWith(".") && strWord.indexOf(',') != -1 &&
* strWord.indexOf(':') != -1 ){ //ConfigurationContainer.println(
* "needsNUmberSplit: " + strWord); return true; }
*/
// ConfigurationContainer.println( "!needsNUmberSplit2: " + strWord);
return false;
}
protected boolean isNumber(String strWord) {
int length = strWord.length();
for (int i = 0; i < length; i++) {
if (!(Character.isDigit(strWord.charAt(i))
|| (Character.getType(strWord.charAt(i)) == Character.OTHER_PUNCTUATION) || strWord
.charAt(i) == '-')) {
// ConfigurationContainer.println( "!needsNUmberSplit1: " +
// strWord);
return false;
}
}
return true;
}
protected String processSingleNumber(String strWord) {
if (strWord == null) {
return null;
}
if (strWord.length() == 0) {
return strWord;
}
if (boolReplaceNumbers && Character.isDigit(strWord.charAt(0))) {
return "%N%";
}
return strWord;
}
/*
* protected String processInfixApostrophe( String strWord ){ if(
* strWord.length() == 1 ){ return strWord; }
*
* int intPos = strWord.indexOf("'");
*
* if( intPos >=0 && needsSplit(strWord) ){ StringBuffer objBuffer = new
* StringBuffer(); objBuffer.append(
* processInfixComma(strWord.substring(0,intPos)) ); objBuffer.append( " ' " );
* objBuffer.append(
* processInfixComma(strWord.substring(intPos+1,strWord.length())) ); return
* objBuffer.toString(); }
*
* return processInfixComma(strWord); }
*/
protected String processInfixApostrophe(String strWord) {
if (strWord.length() == 1) {
return processSingleNumber(strWord);
}
int intPos = strWord.indexOf("'");
if (intPos >= 0 && needsSplit(strWord)) {
// ConfigurationContainer.println( "split comma: " + strWord );
StringBuffer objBuffer = new StringBuffer();
objBuffer.append(processNumber(strWord.substring(0, intPos)));
objBuffer.append(" ' ");
objBuffer.append(processNumber(strWord.substring(intPos + 1,
strWord.length())));
return objBuffer.toString();
}
// ConfigurationContainer.println( "split comma2: " + strWord );
return processNumber(strWord);
}
public String processNumber(String strWord) {
// ConfigurationContainer.println( "processNumber: " +
// boolReplaceNumbers + "\t" + isNumber(strWord) );
if (boolReplaceNumbers && isNumber(strWord)) {
return "%N%";
}
return strWord;
}
public void setBoolReplaceNumbers(boolean boolReplaceNumbers) {
this.boolReplaceNumbers = boolReplaceNumbers;
}
}