Package org.apache.commons.math.linear

Examples of org.apache.commons.math.linear.RealMatrixImpl.multiply()

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    rMatrix = new RealMatrixImpl(qr.getR().getArray());
    qMatrix = new RealMatrixImpl(qr.getQ().getArray());
    RealMatrix qMatrixTransposed = qMatrix.transpose();
    RealMatrix qByY = qMatrixTransposed.multiply(yMatrix);
    RealMatrix  rMatrixInverse = new RealMatrixImpl(new Matrix(rMatrix.getData()).inverse().getArray());
    RealMatrix resultMatrix = rMatrixInverse.multiply(qByY);
    coefficiants= resultMatrix.getColumn(0);

    //System.out.println(stdDev+" "+mean);
  }
 
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                double[] bi = bData[i];
                for (int j = 0; j < b.getColumnDimension(); ++j) {
                    bi[j] = 1.0 + 0.1 * ++counter;
                }
            }
            RealMatrix bbt = b.multiply(b.transpose());
            covariance = new RealMatrixImpl(mean.length, mean.length);
            double[][] covData = covariance.getDataRef();
            for (int i = 0; i < covariance.getRowDimension(); ++i) {
                covData[i][i] = bbt.getEntry(i, i);
                for (int j = 0; j < covariance.getColumnDimension(); ++j) {
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