@Override
public void loadModel(BufferedReader reader) throws IOException {
double globalAverage = Double.parseDouble(reader.readLine());
double[] userBiases = VectorExtensions.readVectorArray(reader);
double[] itemBiases = VectorExtensions.readVectorArray(reader);
reader.close();
this.globalAverage = globalAverage;
this.userBiases = userBiases;
this.itemBiases = itemBiases;
}
@Override
public void saveModel(PrintWriter writer) throws IOException {
writer.println(globalAverage);
VectorExtensions.writeVectorArray(writer, userBiases);
VectorExtensions.writeVectorArray(writer, itemBiases);
}