There is documentation for how to do this from the command line but we’re doing everything programatically and wanted to be able to save our classifiers from Java code.
As it turns out it’s not too tricky when you know which classes to call and saving a classifier to a file is as simple as this:
MultilayerPerceptron classifier = new MultilayerPerceptron(); classifier.buildClassifier(instances); // instances gets passed in from elsewhere Debug.saveToFile("/path/to/weka-neural-network", classifier);
If we want to load that classifier up we can make use of the SerializedClassifier class like so:
SerializedClassifier classifier = new SerializedClassifier(); classifier.setModelFile(new File("/path/to/weka-neural-network"));