* Load the ensemble
*/
File modelFile = new File((String) options.valueOf("model-file"));
Ensemble ensemble = new Ensemble();
if (options.valueOf("tree-type").equals("RegressionTree")) {
ensemble.loadFromFile(RegressionTree.class, modelFile);
} else if (options.valueOf("tree-type").equals("DecisionTree")) {
ensemble.loadFromFile(DecisionTree.class, modelFile);
} else {
System.err.println("Unknown tree type: " + options.valueOf("tree-type"));
}