Examples of DiagonalMatrix

edu.ucla.sspace.matrix.DiagonalMatrix
A special-case {@code Matrix} implementation for diagonal matrices. Thisclass provides a memory efficient representation and additional bounds checking to ensure non-diagonal elements cannot be set. @author Keith Stevens
mikera.matrixx.impl.DiagonalMatrix
Specialised diagonal matrix class, with dense double[] array storage for the leading diagonal only. Not fully mutable - only the diagonal values can be changed @author Mike
org.apache.commons.math3.linear.DiagonalMatrix
Implementation of a diagonal matrix. @since 3.1.1
org.apache.mahout.math.DiagonalMatrix

Examples of org.apache.commons.math3.linear.DiagonalMatrix

     * @return the square-root of the weight matrix.
     */
    private RealMatrix squareRoot(RealMatrix m) {
        if (m instanceof DiagonalMatrix) {
            final int dim = m.getRowDimension();
            final RealMatrix sqrtM = new DiagonalMatrix(dim);
            for (int i = 0; i < dim; i++) {
               sqrtM.setEntry(i, i, FastMath.sqrt(m.getEntry(i, i)));
            }
            return sqrtM;
        } else {
            final EigenDecomposition dec = new EigenDecomposition(m);
            return dec.getSquareRoot();

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Examples of org.apache.commons.math3.linear.DiagonalMatrix


    LeastSquaresBuilder builder(StraightLineProblem problem){
        return new LeastSquaresBuilder()
                .model(problem.getModelFunction(), problem.getModelFunctionJacobian())
                .target(problem.target())
                .weight(new DiagonalMatrix(problem.weight()))
                //unused start point to avoid NPE
                .start(new double[2]);
    }

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Examples of org.apache.mahout.math.DiagonalMatrix

  /**
   * Constructs a sampler with diagonal scale matrix.
   * @param diagonal The diagonal elements of the scale matrix.
   */
  public MultiNormal(Vector diagonal) {
    this(new DiagonalMatrix(diagonal), null);
  }

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