1. The cluster is labeled as a "merge" if it has an overlapping value higher than 0.5 with more than one class. In this case, the procedure explained below in \ref{108623} is applied (see Fig. \ref{595195}D).   
  2. In any other case, the cluster is labeled as a "new class" (see cluster  \(\tilde C^{t_2}_3\) in Fig. \ref{595195}C).  
If the sum of the overlapping values from a given class \(j'\) for all the clusters labeled as split or match is higher than 0.5, the spikes from the split clusters are incorporated to the class \(j'\) (see Fig. \ref{595195}B); otherwise they are assigned to a "new class" (see cluster  \(\tilde C^{t_2}_1\) in Fig. \ref{595195}C). Using this criterion it is possible to fix the cases where the sorting algorithm generates overclustering on a given block.