Run · Voynich Manuscript

T41 generation 1 variant: lattice EM control with sparser prior and more nulls (pw 0.3, alpha 0.01)

Lattice EM decipherment: sign boundaries and key learned together, with a structure-preserving null: Held-out dictionary coverage (bar 0.7 x true plaintext's) / key accuracy by use / character similarity.

Fails the control gate; the sparser prior collapses the key (7 %). Branch killed.control 0.325 / 0.071 / 0.047 (bar 0.488; true 0.697); permuted key 0.291 (p 0.14)0

Result

Run	Measured	Result	Against	Decision	Date
Run	Held-out dictionary coverage (bar 0.7 x true plaintext's) / key accuracy by use / character similarity	control 0.325 / 0.071 / 0.047 (bar 0.488; true 0.697); permuted key 0.291 (p 0.14)	G1a (alpha 0.05, pw 0.25): key 0.364	Fails the control gate; the sparser prior collapses the key (7 %). Branch killed.

What it used and found

Lattice EM decipherment: sign boundaries and key learned together, with a structure-preserving null

Method

MTH

Herbal A and Herbal B paragraph text: training and held-out pages

Dataset

DAT

Latin genre texts

Dataset

DAT

Naibbe cipher tables and example plaintexts (greshko/naibbe-cipher, commit 719f2f4c)

Dataset

DAT

ZL3b transcription

Dataset

DAT

Latin as a re-spaced homophonic stream (period practices)

Answer it tests

ANS

Parameters

pw = 0.3, alpha = 0.01, restarts = 30, settings = as g1a, permutations = 20, em_iterations = 60

Cite it

Mysteries Department. (2026). T41 generation 1 variant: lattice EM control with sparser prior and more nulls (pw 0.3, alpha 0.01) [Run RUN0DCF74GZ8K4D]. https://mysteriesdept.com/r/RUN0DCF74GZ8K4D

@misc{mysteriesdept_run0dcf74gz8k4d,
  title     = {T41 generation 1 variant: lattice EM control with sparser prior and more nulls (pw 0.3, alpha 0.01)},
  author    = {{Mysteries Department}},
  year      = {2026},
  note      = {Run, catalog key RUN0DCF74GZ8K4D},
  url       = {https://mysteriesdept.com/r/RUN0DCF74GZ8K4D}
}