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202 changes: 202 additions & 0 deletions LICENSE-2.0.txt
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/

TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

1. Definitions.

"License" shall mean the terms and conditions for use, reproduction,
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158 changes: 158 additions & 0 deletions UseDISCO.java
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import de.linguatools.disco.CorruptConfigFileException;
import de.linguatools.disco.DISCO;
import de.linguatools.disco.ReturnDataBN;
import de.linguatools.disco.ReturnDataCol;
import de.linguatools.disco.WrongWordspaceTypeException;
import java.io.FileNotFoundException;
import java.io.IOException;

/*******************************************************************************
* Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2015 Peter Kolb
* [email protected]
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy
* of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
******************************************************************************/

/**
* sample code to show the use of the DISCO Java API version 2.0.
* @author peter
* @version 2.0
*/
public class UseDISCO {

/************************************************************************
* Call with: java UseDISCO WORDSPACE-DIR WORD
* Make sure that disco-2.0.jar is in the classpath.
* The word space must be of type DISCO.WordspaceType.SIM.
* Set the JVM heap size to be larger than the word space that
* will be loaded into RAM, otherwise an OutOfMemoryError will be thrown!
* @param args
* @throws java.io.IOException
*/
public static void main(String[] args) throws IOException{

// first command line argument is path to the DISCO word space directory
String discoDir = args[0];
// second argument is the input word
String word = args[1];

/****************************************
* create instance of class DISCO. *
* Do NOT load the word space into RAM. *
****************************************/
DISCO disco;
try {
disco = new DISCO(discoDir, false);
} catch (FileNotFoundException | CorruptConfigFileException ex) {
System.out.println("Error creating DISCO instance: "+ex);
return;
}

// is the word space of type "sim"?
if( disco.wordspaceType != DISCO.WordspaceType.SIM ){
System.out.println("The word space "+discoDir+" is not of type SIM!");
return;
}

// retrieve the frequency of the input word
int freq = disco.frequency(word);
// and print it to stdout
System.out.println("Frequency of "+word+" is "+freq);

// end if the word wasn't found in the index
if(freq == 0) return;

// retrieve the collocations for the input word
ReturnDataCol[] collocationResult = disco.collocations(word);
// and print the first 20 to stdout
System.out.println("Collocations:");
for(int i = 1; i < collocationResult.length; i++){
System.out.println("\t"+collocationResult[i].word+"\t"+
collocationResult[i].value);
if( i >= 20 ) break;
}

// retrieve the most similar words for the input word
ReturnDataBN simResult;
try {
simResult = disco.similarWords(word);
} catch (WrongWordspaceTypeException ex) {
System.out.println("Error retrieving most similar words: "+ex);
return;
}
// and print the first 20 of them to stdout
System.out.println("Most similar words:");
for(int i = 1; i < simResult.words.length; i++){
System.out.println("\t"+simResult.words[i]+"\t"+simResult.values[i]);
if( i >= 20 ) break;
}

// compute second order similarity between the input word and its most
// similar words
System.out.println("Computing second order similarity between "+word+
" and all of its similar words...");
long startTime = System.currentTimeMillis();
for(int i = 1; i < simResult.words.length; i++){
try {
float s2 = disco.secondOrderSimilarity(word, simResult.words[i]);
} catch (WrongWordspaceTypeException ex) {
System.out.println("Error computing second order similarity: "+ex);
return;
}
}
long endTime = System.currentTimeMillis();
long elapsedTime = endTime - startTime;
System.out.println("OK. Computation took "+elapsedTime+" ms.");

/**********************************************
* Create another DISCO instance, *
* this time loading the word space into RAM. *
**********************************************/
System.out.println("Trying to load word space into RAM...\n"+
"(in case of OutOfMemoryError: increase JVM "+
"heap space to size of word space directory!)");
startTime = System.currentTimeMillis();
DISCO discoRAM;
try {
discoRAM = new DISCO(discoDir, true);
} catch (FileNotFoundException | CorruptConfigFileException ex) {
System.out.println("Error creating DISCO instance: "+ex);
return;
}
endTime = System.currentTimeMillis();
long elapsedTimeLoad = endTime - startTime;
System.out.println("OK (loading to RAM took "+elapsedTimeLoad+" ms)");

// compute second order similarity between the input word and its most
// similar words in RAM
System.out.println("Computing second order similarity between "+word+
" and all of its similar words in RAM...");
startTime = System.currentTimeMillis();
for(int i = 1; i < simResult.words.length; i++){
try {
float s2 = discoRAM.secondOrderSimilarity(word, simResult.words[i]);
} catch (WrongWordspaceTypeException ex) {
System.out.println("Error computing second order similarity: "+ex);
return;
}
}
endTime = System.currentTimeMillis();
long elapsedTimeRAM = endTime - startTime;
System.out.println("OK. Computation took "+elapsedTimeRAM+" ms in RAM.");
if( elapsedTimeRAM >= elapsedTime ){
System.out.println("Maybe your system had to swap to disk?");
}
}
}

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