polr_modelparams.setTargetCategories(this.VectorFactory
.getTargetCategories());
// ----- this normally is generated from the POLRModelParams ------
this.polr = new ParallelOnlineLinearRegression(
this.FeatureVectorSize, new UniformPrior()).alpha(1)
.stepOffset(1000).decayExponent(0.9).lambda(3.0e-5)
.learningRate(this.LearningRate);
polr_modelparams.setPOLR(polr);