public LinearClassifier createLinearClassifier(double[] weights) {
double[][] weights2D;
if (objective != null) {
weights2D = objective.to2D(weights);
} else {
weights2D = ArrayUtils.to2D(weights, featureIndex.size(), labelIndex.size());
}
return new LinearClassifier<L, F>(weights2D, featureIndex, labelIndex);
}
