A family of grammars for Voynichese

[Mauro]

Addendum. About 'separable' words: I don't think the concept is even meaningful in the context of slot grammars: just duplicate any grammar and it will find all the separable words it had been missing before. Seen from another point of view: it's not that defining a word as 'separable' excuses the original grammar for not having found it

Yes, but when it's too easy to match anything, the slot sequence can't be optimized. There must be some rule or limit to prevent over-modeling (as ReneZ said) otherwise it's more a certitude than a risk. I think the MZ 12-slot sequence is already too long, it includes a limited wrap-around effect that can be extended by allowing full loops: allowing 3 or even 4 loops improves the coverage, but I don't see the point.

I 100% agree with you (even if I'd say 2 loops are definitely enough to greatly improve MZ's SLOT grammar to ~100% coverage).

That's the whole point of the Nchunktypes (or Nchunktokens) metric: to check if the grammar is trivial-ish, because it too easily matches anything, or if it is actually non-trivial and useful. Is this the 'right' metric to use? Well, it avoids the pitfalls where efficiency and F1 score crash, but I don't know. I feel it might be the right one, but of course I do... I 'invented' it... that's why I'm presenting it to the community for criticisms.