import de.jungblut.math.DoubleVector; import de.jungblut.math.dense.DenseDoubleVector; import de.jungblut.math.dense.DenseDoubleMatrix; public class DataAnalysis { public static void main(String[] args) { DoubleVector vector1 = new DenseDoubleVector(new double[] { 1, 2, 3 }); DoubleVector vector2 = new DenseDoubleVector(new double[] { 4, 5, 6 }); double dotProduct = vector1.dot(vector2); } } import de.jungblut.math.DoubleVector; import de.jungblut.math.dense.DenseDoubleVector; import de.jungblut.math.dense.DenseDoubleMatrix; public class DataAnalysis { public static void main(String[] args) { DoubleMatrix matrix1 = DenseDoubleMatrix.create(new double[][] { {1, 2}, {3, 4} }); DoubleMatrix matrix2 = DenseDoubleMatrix.create(new double[][] { {5, 6}, {7, 8} }); DoubleMatrix resultMatrix = matrix1.multiply(matrix2); System.out.println(resultMatrix); } }