public static void main(String[] args) {
// Create a training set
List<Datum<String, String>> trainingData = new ArrayList<>();
trainingData.add(makeStopLights(GREEN, RED));
trainingData.add(makeStopLights(GREEN, RED));
trainingData.add(makeStopLights(GREEN, RED));
trainingData.add(makeStopLights(RED, GREEN));
trainingData.add(makeStopLights(RED, GREEN));
trainingData.add(makeStopLights(RED, GREEN));
trainingData.add(makeStopLights(RED, RED));
// Create a test set
Datum<String, String> workingLights = makeStopLights(GREEN, RED);
Datum<String, String> brokenLights = makeStopLights(RED, RED);
// Build a classifier factory
LinearClassifierFactory<String, String> factory = new LinearClassifierFactory<>();
factory.useConjugateGradientAscent();
// Turn on per-iteration convergence updates
factory.setVerbose(true);
// Small amount of smoothing
factory.setSigma(10.0);
// Build a classifier
LinearClassifier<String, String> classifier = factory.trainClassifier(trainingData);
// Check out the learned weights
classifier.dump();
// Test the classifier
System.out.println("Working instance got: " + classifier.classOf(workingLights));
classifier.justificationOf(workingLights);
System.out.println("Broken instance got: " + classifier.classOf(brokenLights));
classifier.justificationOf(brokenLights);
}
/** Sets the minimizer to {@link CGMinimizer}, with the passed <code>verbose</code> flag. */
public void useConjugateGradientAscent(boolean verbose) {
this.verbose = verbose;
useConjugateGradientAscent();
}