Character entropy of Voynichese
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There are some considerations against Voynichese being just a highly abbreviated plain text (Latin or otherwise), namely from the perspective of its statistical properties.

Let's consider an example with the declaration of the universally neglected human rights. Here's its text in Latin normalized as follows: all headers removed, all characters converted to lower case, all punctuation removed, all "v" characters substituted with "u" (so as to bring the text closer to the medieval practise), and also there are no "j" or "w" characters and no digits.

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The claculated entropies for this sample are: h1 = 3,95, h2 = 3,16 (both of which are notably higher than Voynich).

Let's now introduce some abbreviation to see the direction of how it affects the figures. Let's replace all word-starting "con" 's with "9". There are only 37 occurrences, so the influence will not be dramatic, but we'll observe the direction.

The results are: h1 = 3,96, h2 = 3,18.

Let's add more abbreviation and replace all word-ending "us" 's with "9" (which I think is another common Latin abbreviation). There are 100 occurrences.

The results would be: h1 = 3,99, h2 = 3,20.

So the tendence is that introducing abbreviation does increase both h1 and h2, not decrease it, as we would like.

What would decrease h1 is, e.g. expanding certain glyphs into sequences of other glyphs, which could still be visually detected and discerned from one another by a reader proficient in Latin. Returning to our original sample, let's expand all instances of "a" into "ci". There are 667 occurrences of "a", so we hope to see some effect.

The results are: h1 = 3,79, h2 = 2,99

So we have a decrease in both. Let's add some more expansion and replace "n" with "ii". I think that who knows the trick will still be able to read the original text from this. This is actually the same as the problem with interpreting Voynichese glyphs - i.e. is iin one glyph or three glyphs in succession.

Results: h1 = 3,54,  h2 = 2,93

So while this expansion has a distinct effect on h1 (which is now lesser than Voynich), h2 still behaves more sluggishly. What will significantly reduce h2 would be, of course, introduction of nulls. Let's add, in the current sample, a "0" after each "e". There are 1018 occurrences, so the result would be immediate.

Results: h1 = 3,65, h2 = 2,66

Let's proceed further and add a null character "0" after each "t" in addition.

Results: h1 = 3,62, h2 = 2.57.

This indicates what might be the trick with Voynichese - spaces may be effectively "nulls" (should be ignored), plus some nulls are added after most frequent letters (or, probably, since the concept of letter frequency was not known back then, just a good deal of nulls is added without relation to a particular letter, but instead according to some pre-defined rule).
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Messages In This Thread
Character entropy of Voynichese - by Anton - 23-01-2016, 02:08 PM
RE: Character entropy of Voynichese - by ReneZ - 25-01-2016, 09:28 AM
RE: Character entropy of Voynichese - by stellar - 04-11-2016, 11:18 PM
RE: Character entropy of Voynichese - by Anton - 25-01-2016, 11:53 AM
RE: Character entropy of Voynichese - by Anton - 25-01-2016, 07:36 PM
RE: Character entropy of Voynichese - by ReneZ - 26-01-2016, 08:17 AM
RE: Character entropy of Voynichese - by Davidsch - 16-03-2016, 01:20 PM
RE: Character entropy of Voynichese - by Anton - 16-03-2016, 02:37 PM
RE: Character entropy of Voynichese - by Davidsch - 18-03-2016, 11:30 AM
RE: Character entropy of Voynichese - by Anton - 18-03-2016, 12:15 PM
RE: Character entropy of Voynichese - by ReneZ - 18-03-2016, 12:19 PM
RE: Character entropy of Voynichese - by Davidsch - 18-03-2016, 04:52 PM
RE: Character entropy of Voynichese - by Sam G - 19-03-2016, 05:44 PM
RE: Character entropy of Voynichese - by Torsten - 19-03-2016, 06:37 PM
RE: Character entropy of Voynichese - by Anton - 19-03-2016, 06:19 PM
RE: Character entropy of Voynichese - by Sam G - 19-03-2016, 07:05 PM
RE: Character entropy of Voynichese - by ReneZ - 20-03-2016, 12:47 AM
RE: Character entropy of Voynichese - by Torsten - 19-03-2016, 07:32 PM
RE: Character entropy of Voynichese - by Sam G - 19-03-2016, 07:36 PM
RE: Character entropy of Voynichese - by Torsten - 19-03-2016, 07:44 PM
RE: Character entropy of Voynichese - by Sam G - 19-03-2016, 08:09 PM
RE: Character entropy of Voynichese - by Torsten - 19-03-2016, 08:33 PM
RE: Character entropy of Voynichese - by Anton - 19-03-2016, 09:26 PM
RE: Character entropy of Voynichese - by Davidsch - 19-03-2016, 10:44 PM
RE: Character entropy of Voynichese - by Torsten - 20-03-2016, 12:24 AM
RE: Character entropy of Voynichese - by Davidsch - 20-03-2016, 12:26 PM
RE: Character entropy of Voynichese - by Torsten - 20-03-2016, 02:42 PM
RE: Character entropy of Voynichese - by ReneZ - 21-03-2016, 02:24 PM
RE: Character entropy of Voynichese - by Anton - 20-03-2016, 01:41 PM
RE: Character entropy of Voynichese - by Davidsch - 20-03-2016, 06:09 PM
RE: Character entropy of Voynichese - by Torsten - 21-03-2016, 12:22 PM
RE: Character entropy of Voynichese - by Anton - 02-11-2016, 09:14 PM
RE: Character entropy of Voynichese - by Sam G - 06-11-2016, 12:13 PM
RE: Character entropy of Voynichese - by -JKP- - 06-11-2016, 12:27 PM
RE: Character entropy of Voynichese - by Sam G - 06-11-2016, 06:26 PM
RE: Character entropy of Voynichese - by Anton - 03-11-2016, 01:25 PM
RE: Character entropy of Voynichese - by Davidsch - 03-11-2016, 03:26 PM
RE: Character entropy of Voynichese - by Anton - 03-11-2016, 04:02 PM
RE: Character entropy of Voynichese - by Anton - 03-11-2016, 04:27 PM
RE: Character entropy of Voynichese - by -JKP- - 04-11-2016, 01:17 PM
RE: Character entropy of Voynichese - by Koen G - 03-11-2016, 04:31 PM
RE: Character entropy of Voynichese - by Anton - 03-11-2016, 04:34 PM
RE: Character entropy of Voynichese - by Koen G - 03-11-2016, 04:37 PM
RE: Character entropy of Voynichese - by Anton - 03-11-2016, 05:21 PM
RE: Character entropy of Voynichese - by Davidsch - 03-11-2016, 05:23 PM
RE: Character entropy of Voynichese - by Anton - 03-11-2016, 05:45 PM
RE: Character entropy of Voynichese - by Anton - 05-11-2016, 10:54 PM
RE: Character entropy of Voynichese - by Anton - 06-11-2016, 12:50 PM
RE: Character entropy of Voynichese - by -JKP- - 07-11-2016, 02:07 AM
RE: Character entropy of Voynichese - by Koen G - 07-11-2016, 05:00 AM
RE: Character entropy of Voynichese - by Anton - 07-11-2016, 02:44 PM
RE: Character entropy of Voynichese - by Anton - 10-11-2016, 06:32 PM
RE: Character entropy of Voynichese - by Anton - 05-01-2017, 12:12 AM
RE: Character entropy of Voynichese - by Koen G - 05-01-2017, 12:44 AM
RE: Character entropy of Voynichese - by Anton - 05-01-2017, 01:15 AM
RE: Character entropy of Voynichese - by Davidsch - 20-02-2017, 04:48 PM
RE: Character entropy of Voynichese - by Koen G - 20-02-2017, 05:20 PM
RE: Character entropy of Voynichese - by Davidsch - 20-02-2017, 05:22 PM
RE: Character entropy of Voynichese - by Anton - 13-12-2017, 01:25 AM
RE: Character entropy of Voynichese - by Anton - 13-12-2017, 01:47 PM
RE: Character entropy of Voynichese - by Koen G - 13-12-2017, 03:22 PM
RE: Character entropy of Voynichese - by Anton - 13-12-2017, 03:39 PM
RE: Character entropy of Voynichese - by ReneZ - 14-12-2017, 06:21 AM
RE: Character entropy of Voynichese - by ReneZ - 14-12-2017, 09:50 AM
RE: Character entropy of Voynichese - by Torsten - 14-12-2017, 04:47 PM
RE: Character entropy of Voynichese - by Anton - 14-12-2017, 01:54 PM
RE: Character entropy of Voynichese - by Anton - 14-12-2017, 04:14 PM
RE: Character entropy of Voynichese - by ReneZ - 14-12-2017, 07:02 PM
RE: Character entropy of Voynichese - by Torsten - 16-12-2017, 01:18 AM
RE: Character entropy of Voynichese - by Anton - 14-12-2017, 07:43 PM
RE: Character entropy of Voynichese - by Anton - 16-12-2017, 01:35 AM
RE: Character entropy of Voynichese - by Torsten - 16-12-2017, 10:32 PM
RE: Character entropy of Voynichese - by Anton - 16-12-2017, 10:39 PM
RE: Character entropy of Voynichese - by Torsten - 16-12-2017, 11:39 PM
RE: Character entropy of Voynichese - by -JKP- - 17-12-2017, 04:23 AM
RE: Character entropy of Voynichese - by Anton - 17-12-2017, 12:10 AM
RE: Character entropy of Voynichese - by Anton - 17-12-2017, 02:05 PM
RE: Character entropy of Voynichese - by Torsten - 17-12-2017, 02:40 PM
RE: Character entropy of Voynichese - by Anton - 17-12-2017, 02:55 PM
RE: Character entropy of Voynichese - by Torsten - 17-12-2017, 09:43 PM
RE: Character entropy of Voynichese - by Anton - 03-06-2018, 01:52 PM
RE: Character entropy of Voynichese - by Anton - 03-06-2018, 05:39 PM
RE: Character entropy of Voynichese - by Anton - 03-06-2018, 05:51 PM
RE: Character entropy of Voynichese - by -JKP- - 03-06-2018, 06:10 PM
RE: Character entropy of Voynichese - by Anton - 03-06-2018, 06:23 PM
RE: Character entropy of Voynichese - by Anton - 04-06-2018, 02:52 PM
RE: Character entropy of Voynichese - by Anton - 13-04-2019, 01:01 AM

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