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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; | ||
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/******************************************************************************* | ||
* 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. | ||
* | ||
******************************************************************************/ | ||
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/** | ||
* sample code to show the use of the DISCO Java API version 2.0. | ||
* @author peter | ||
* @version 2.0 | ||
*/ | ||
public class UseDISCO { | ||
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/************************************************************************ | ||
* 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{ | ||
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// 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]; | ||
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/**************************************** | ||
* 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; | ||
} | ||
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// 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; | ||
} | ||
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// 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); | ||
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// end if the word wasn't found in the index | ||
if(freq == 0) return; | ||
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// 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; | ||
} | ||
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// 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; | ||
} | ||
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// 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."); | ||
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/********************************************** | ||
* 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)"); | ||
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// 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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