Examples of de.lmu.ifi.dbs.elki.math.linearalgebra.Vector.timesEquals()

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

Class de.lmu.ifi.dbs.elki.math.linearalgebra.Vector

Examples of de.lmu.ifi.dbs.elki.math.linearalgebra.Vector.timesEquals()

de.lmu.ifi.dbs.elki.math.linearalgebra.Vector.timesEquals()
Multiply a matrix by a scalar in place, A = s*A @param s scalar @return replace A by s*A

   * 
   */
  private void normalizeEigenPair(final EigenPair eigenPair) {
    final Vector eigenvector = eigenPair.getEigenvector();
    final double scaling = 1.0 / Math.sqrt(eigenPair.getEigenvalue()) * eigenvector.normF();
    eigenvector.timesEquals(scaling);
  }
}

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  public Matrix dataProjections(V p) {
    Vector centered = p.getColumnVector().minus(centroid);
    Matrix sum = new Matrix(p.getDimensionality(), strongEigenvectors.getColumnDimensionality());
    for(int i = 0; i < strongEigenvectors.getColumnDimensionality(); i++) {
      Vector v_i = strongEigenvectors.getCol(i);
      v_i.timesEquals(centered.transposeTimes(v_i));
      sum.setCol(i, v_i);
    }
    return sum;
  }

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   * 
   */
  private void normalizeEigenPair(final EigenPair eigenPair) {
    final Vector eigenvector = eigenPair.getEigenvector();
    final double scaling = 1.0 / Math.sqrt(eigenPair.getEigenvalue()) * eigenvector.euclideanLength();
    eigenvector.timesEquals(scaling);
  }
}

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          mean.plusEquals(database.get(clusterIter.next()).getColumnVector());
        }
      }
      if(list.size() > 0) {
        assert mean != null;
        mean.timesEquals(1.0 / list.size());
      }
      else {
        mean = means.get(i);
      }
      newMeans.add(mean);

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      return; // Keep old mean
    }
    Vector delta = vec.getColumnVector();
    // Compute difference from mean
    delta.minusEquals(mean);
    delta.timesEquals(op / newsize);
    mean.plusEquals(delta);
  }


  /**
   * Perform a MacQueen style iteration.

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