Package de.lmu.ifi.dbs.elki.math.linearalgebra

Examples of de.lmu.ifi.dbs.elki.math.linearalgebra.Matrix.times()

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   * @param matrix the matrix to be centered
   * @return centered matrix (for convenience)
   */
  public static Matrix centerMatrix(final Matrix matrix) {
    final Matrix normalizingMatrix = new Matrix(matrix.getRowDimensionality(), matrix.getColumnDimensionality(), 1.0 / matrix.getColumnDimensionality());
    return matrix.minusEquals(normalizingMatrix.times(matrix)).minusEquals(matrix.times(normalizingMatrix)).plusEquals(normalizingMatrix.times(matrix).times(normalizingMatrix));
  }

  @Override
  public String toString() {
    return super.toString();
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   * @param matrix the matrix to be centered
   * @return centered matrix (for convenience)
   */
  public static Matrix centerMatrix(final Matrix matrix) {
    final Matrix normalizingMatrix = new Matrix(matrix.getRowDimensionality(), matrix.getColumnDimensionality(), 1.0 / matrix.getColumnDimensionality());
    return matrix.minusEquals(normalizingMatrix.times(matrix)).minusEquals(matrix.times(normalizingMatrix)).plusEquals(normalizingMatrix.times(matrix).times(normalizingMatrix));
  }

  @Override
  public String toString() {
    return super.toString();
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        log.append(FormatUtil.format(transposedWeakEigenvectors, NF)).append('\n');
        log.append("Eigenvalues:\n");
        log.append(FormatUtil.format(pcares.getEigenvalues(), " , ", 2));
        logger.debugFine(log.toString());
      }
      Vector B = transposedWeakEigenvectors.times(centroid);
      if(logger.isDebugging()) {
        StringBuilder log = new StringBuilder();
        log.append("Centroid:\n").append(centroid).append('\n');
        log.append("tEV * Centroid\n");
        log.append(B);
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