Periodic and Chaotic Dynamics in Childhood Infections

摘要: Most biologists, when confronted with a time series, assume that the dynamical possibilities are quite limited. Either system sits still, presumably at equilibrium, or it may oscillate fixed period. Anything else, they will probably tell you, is evidence of noise — observational error chance perturbations from without. By these criteria, most biological systems, especially population level, extremely noisy. Hence, no accident mathematical biology places heavy emphasis on stochastic models as well statistical techniques designed to extract “deterministic” component signal.