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weka1:ÔÚeclipseÏÂʹÓÃjavaµ÷ÓÃweka

ÔÚjavaÏîÄ¿Öе¼Èëweka.jarµÄ°ü,È»ºó°ÑÏÂÃæ´úÂëcopyµ½mainÀïÃæ,
ÓÃeclipseµÄ»°×Ô¶¯import°É.
×¢ÒâÒ»ÏÂÄǸöÎļþµÄ·¾¶ÊÇ·ñÕýÈ·.
import
java.io.File;
import
weka.classifiers.Classifier;
import
weka.classifiers.trees.J48;
import
weka.core.Instances;
import
weka.core.converters.ArffLoader;

½«ÒÔÏ´úÂëÌí¼Óµ½Main
º¯ÊýÖÐ
   
Classifier m_classifier =
new
J48();
       
File inputFile =
new
File(
"D:\\Program Files\\Weka-3-6\\data\\cpu.with.vendor.arff"
);
//
ѵÁ·ÓïÁÏÎļþ
       
ArffLoader atf =
new
ArffLoader(); 
       
atf.setFile(inputFile);
 
 
  
 
Instances instancesTrain = atf.getDataSet();
//
¶ÁÈëѵÁ·Îļþ
    
 
 
  
 
inputFile =
new
File(
"D:\\Program Files\\Weka-3-6\\data\\cpu.with.vendor.arff"
);
//
²âÊÔÓïÁÏÎļþ
 
 
  
 
atf.setFile(inputFile);          
       
Instances instancesTest = atf.getDataSet();
//
¶ÁÈë²âÊÔÎļþ
       
instancesTest.setClassIndex(0);
//
ÉèÖ÷ÖÀàÊôÐÔËùÔÚÐкţ¨µÚÒ»ÐÐΪ
0
ºÅ£©£¬
instancesTest.numAttributes()
¿ÉÒÔÈ¡µÃÊôÐÔ×ÜÊý
       
double
sum = instancesTest.numInstances(),
//
²âÊÔÓïÁÏʵÀýÊý
       
right = 0.0f;
 
 
  
 
instancesTrain.setClassIndex(0);
 
 
 
  
 
m_classifier.buildClassifier(instancesTrain);
//
ѵÁ·
       
 
  
       
for
(
int
 
i = 0;i<sum;i++)
//
²âÊÔ·ÖÀà½á¹û
       


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