Twitter Self-Organization to the Edge of a Phase Transition: Discrete-Time Model and Effective Early Warning Signals in Phase Space

Figure 2

Dynamic series of the number of unstable SOB automaton nodes (a), variance (b), kurtosis (c), skewness (d), autocorrelation at lag-1 (e), Welch’s PSD estimation for power law exponent (f), correlation dimension (g), and approximate entropy (h) for the sandpile cellular automaton on the CLG with the Manna rule and pumping according to the law of discrete uniform distribution. The vertical red dashed line indicates a critical iteration.

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