title: Exporting Mahout model output as Weka input
body: <p>I would like to use the output model of a Mahout decision tree training process as the input model for a Weka based classifier.</p>
  
  <p>As the training of a complex decision tree that is based on millions of training records is almost impractical for a single node Weka classifier, I would like to use Mahout to build the model, using for example <a href="https://cwiki.apache.org/MAHOUT/partial-implementation.html" rel="nofollow noreferrer">Random Forest Partial Implementation</a>.</p>
  
  <p>While the algorithm above can be problematic while training, it is rather simple to use it for prediction with Weka on a single machine. </p>
  
  <p>On Mahout <a href="https://cwiki.apache.org/MAHOUT/data-formats.html" rel="nofollow noreferrer">wiki site</a> it is stated that the data formats for import include Weka ARFF format, but not for export.</p>
  
  <p>Is it possible to use some of the existing implementations in <strong>Mahout to train</strong> models that will be used in <strong>production with a simple Weka</strong> based system?</p>