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Growth of informational measures with word-length approximation in the MOAP

Characterize how the informational measures of the Mother of All Processes M—specifically the block entropy H(L), entropy-rate estimates h_mu(L), excess entropy E, transient information TI, statistical complexity C_mu, and crypticity PC—vary as a function of the maximum word length L used in the mixed-state approximation, establishing the scaling behavior as L increases.

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Background

The authors compute entropies and derived informational quantities for hidden multistationary processes via mixed-state presentations approximated by enumerating words up to a finite maximum length. For the MOAP, hundreds of mixed states are generated even for modest L, and the transient-state set appears uncountably infinite with fractal structure.

Understanding the growth and convergence behavior of informational measures with increasing word-length approximation is essential for quantifying the complexity of MOAP and for assessing practical approximations of such highly nonergodic, structurally rich processes.

References

There are a number of open questions, as well: 3. How do informational measures grow with word-length approximation?

Way More Than the Sum of Their Parts: From Statistical to Structural Mixtures (2507.07343 - Crutchfield, 10 Jul 2025) in Section 7.3, Mother of All Processes (Subsection PU)