Why is there even a Voynich B?

[quimqu]

I do indeed. The sense of discontinuity is coming from the herbal section, where the alternation of herbal-A and herbal-B texts is simply striking. 

Intermediate forms exist, and so do variations inside the A and B texts.

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Thank you René, your RZ language identification is very interesting. You may know I am working with automatic topics at paragraph levels. What I think lately is that the topics found are more style of writting than really topics. I have copied your last table (if I shouldn't please let me know and I will delete it) and I have run my topic detections in 7 topics, just to see if we have the same results. Here are the images:

   
   

(In my plot, each topic is represented by a color, each folio is a vertical stroke and in the vertical stroke, each paragraph is represented by a color proportionally to the paragraph length in the folio).

I see some differences with your table (remember that my analysis is per paragraph). For example, for hand 1, my model detects that is using 4 topics and your say 3. I think that, as I work at paragraph level, hand 1 green topic could be dispersed if we work at folio level (see that the proportion of green is very small agains the orange topic), so we can say that your results and mine are simmilar for hand 1. So your dialect C should be topic blue, your dialect A should be topic pink and your dialect Ae should be topic orange. But note that according to my model the scriba uses also in some paragraphs topic green which could be dialect Ce (not clear).

If we look at hand 3, it has 6 over 7 topics represented (just as in your study), but I think in mine, hand 3 is using topìc orange (which may be your Ae dialect) instead the pink topic (your A dialect).

Well, I hope you find it interesting. If you want any information about my work, feel free to ask.