protected BaseFunction getExternalFunction() {
        return new E1Function(matrix, centroids, e1Costs,
                              assignments, clusterSizes,
                              completeCentroid, simToComplete);
    }
protected BaseFunction getExternalFunction ( ) { return new E1Function ( matrix , centroids , e1Costs , assignments , clusterSizes , completeCentroid , simToComplete ) ; }
{@inheritDoc}