private Individuum makeIndividuum(short[] gene){
  final DBIDs ids=computeSubspaceForGene(gene,ranges);
  final double fitness=(ids.size() > 0) ? sparsity(ids.size(),dbsize,k,phi) : Double.MAX_VALUE;
  return new Individuum(fitness,gene);
}

private Individuum makeIndividuum ( short [ ] gene ) { final DBIDs ids = computeSubspaceForGene ( gene , ranges ) ; final double fitness = ( ids . size ( ) > 0 ) ? sparsity ( ids . size ( ) , dbsize , k , phi ) : Double . MAX_VALUE ; return new Individuum ( fitness , gene ) ; }
make a new individuum helper , computing sparsity = fitness
