Comment on "Simple Measure of Complexity"
- Author(s): Crutchfield, JP
- Feldman, DP
- Shalizi, CR
- et al.
Published Web Locationhttps://doi.org/10.1103/PhysRevE.62.2996
We critique the measure of complexity introduced by Shiner, Davison, and Landsberg in Ref. . In particular, we point out that it is over-universal, in the sense that it has the same dependence on disorder for structurally distinct systems. We then give counterexamples to the claim that complexity is synonymous with being out of equilibrium: equilibrium systems can be structurally complex and nonequilibrium systems can be structurally simple. We also correct a misinterpretation of a result given by two of the present authors in Ref. .  J. S. Shiner, M. Davison, and P. T. Landsberg, ``Simple Measure for Complexity'', Phys. Rev. E 59 (1999) 1459-1464.  J. P. Crutchfield and D. P. Feldman, ``Statistical Complexity of Simple One-Dimensional Spin Systems'', Phys. Rev. E 55:2 (1997) 1239R-1243R.
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