title: weka AdaBoost does not improve results
body: <p>In my bachelor thesis I am supposed to use AdaBoostM1 with a MultinomialNaiveBayes classifier on a text classification problem. The problem is that in most cases, the M1 is worse or equal to the MultinomialNaiveBayes without boosting. </p>
  
  <p>I use the following code:</p>
  
  <pre><code>AdaBoostM1 m1 = new AdaBoostM1();
  m1.setClassifier(new NaiveBayesMultinomial());
  m1.buildClassifier(training);
  </code></pre>
  
  <p>So I don't get how the AdaBoost would not be able to improve the results? Unfortunately, I couldn't find anything else about that on the web as most people seem to be very satisfied with the AdaBoost.</p>