A family of grammars for Voynichese

[Juan_Sali]

From what I know from literature (but I may have missed many references!), in addition to the number of unique word types in the text (a number I’ll call for short ‘NVoynichwords’, ~8400 depending on the transcription), two variables are used for the evaluation of slot grammars:

• The number of correct Voynich word types the grammar generates, I shall use ‘Nhits’ as a shortand
• The total number of word types the grammar can possibly generate: ‘Ngrammarspace’

These two variables are usually used as (exact names may vary):

• Coverage (‘C’ ) = Nhits / NVoynichwords
• Efficiency (‘E’) = Nhits / Ngrammarspace

I would add another variable, the total coverage C1: the summ of all instances of every word type the grammar generates divided by the total number of existent words.
Some words have few instances and reducing the size of the slot grammar may reduce E significantly with a small decrease on C1.
It is important to search the maximum amount of total words generated with the minimum size of grammar possible.