Dear All
I was trying to use Mahout with in my Java Application
The code which I prepared is
=================================
import org.apache.mahout.classifier.bayes.TrainClassifier;
import org.apache.mahout.classifier.bayes.common.BayesParameters;
public class ClassifierTrainer {
public ClassifierTrainer() {
// TODO Auto-generated constructor stub
// trainEr = new trainerMahout(inpDir, outputDir);
}
import org.apache.mahout.classifier.bayes.TrainClassifier;
import org.apache.mahout.classifier.bayes.common.BayesParameters;
public class ClassifierTrainer {
public ClassifierTrainer() {
// TODO Auto-generated constructor stub
}
public void trainerMahout(String inpDir, String outputDir) throws
Exception {
int bayParam = 2;
BayesParameters bp = new BayesParameters(bayParam);
TrainClassifier.trainCNaiveBayes(inpDir, outputDir, bp);
}
/**
* @param args
* @throws Exception
*/
public static void main(String argv[]) throws Exception {
// TODO Auto-generated method stub
ClassifierTrainer clfTr = new ClassifierTrainer();
String idir = argv[0];
String outd = argv[1];
clfTr.trainerMahout(idir, outd);
}
}
========================================
When I was running the code I am getting the following error
INFO: {gramSize=2}
Exception in thread "main" java.lang.NullPointerException
at
org.apache.mahout.classifier.bayes.mapreduce.common.BayesTfIdfDriver.runJob(BayesTfIdfDriver.java:113)
at
org.apache.mahout.classifier.bayes.mapreduce.cbayes.CBayesDriver.runJob(CBayesDriver.java:66)
at
org.apache.mahout.classifier.bayes.TrainClassifier.trainCNaiveBayes(TrainClassifier.java:56)
at
com.tsf.nlp.classifier.ClassifierTrainer.trainerMahout(ClassifierTrainer.java:22)
at
com.tsf.nlp.classifier.ClassifierTrainer.main(ClassifierTrainer.java:38)
I prepared the input documents as per the documentation found the Mahout API
(0.3)
Can any body help regarding the same.
Also if any body can give a link or extensive tutorial on using Mahout
inside a java class
--
**********************************
JAGANADH G
http://jaganadhg.freeflux.net/blog
