A modified Bak-Sneppen model that updates only the minimum and maximum fitness species yields 1/f noise (spectral exponent α≈1) in global fitness fluctuations.
Davidsen \ and\ author N
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$1/f$ noise in extremal dynamics
A modified Bak-Sneppen model that updates only the minimum and maximum fitness species yields 1/f noise (spectral exponent α≈1) in global fitness fluctuations.