UPDATE: I like tye's solution better than mine.

I think you're most of the way there. I haven't written the code, but the procedure would go like this:

  1. Get a list of your objects, sorted by fingerprint (not just a list of indexes).
  2. Loop over the list with something like: 
    my $run_start = 0;
foreach my $index ( 0 .. @sorted - 2 ) {
    if ( ! prop_matching( $sorted[$index],
                          $sorted[$index+1] ) ) {
        output_sets( $run_start, $index );
        $run_start = $index + 1;
    }
}

    [download]
  3. The sub output_sets starts with return if ( $run_start == $index );
  4. It then loops through the items in the run, using prop_matching to group them. Just take the first one, loop through and print everything that matches, remove those from the list, and repeat. You want to avoid printing the ones that match nothing.

In reply to Re: Equivalence classes from equivalence relation and fingerprints by kyle
in thread Equivalence classes from equivalence relation and fingerprints by ambrus

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