double ioff[] = new double[snapshot.getItemIds().size()];
RealMatrix userFeatures = MatrixUtils.createRealMatrix(userCount, featureCount); int itemCount = snapshot.getItemIds().size(); RealMatrix itemFeatures = MatrixUtils.createRealMatrix(itemCount, featureCount);
double ioff[] = new double[snapshot.getItemIds().size()];
RealMatrix userFeatures = MatrixUtils.createRealMatrix(userCount, featureCount); int itemCount = snapshot.getItemIds().size(); RealMatrix itemFeatures = MatrixUtils.createRealMatrix(itemCount, featureCount);