一种简单有效的测度熵替代方法——近似熵(approximate entropy)方

法.应用以上方法对Logistic映射复杂度进行了分析.结果表明Lyapunov指数和测度熵的值与复

杂度基本呈线性关系,分维数与复杂度的函数关系尚难确定,且与Lyapunov指数、测度熵之间的关

系也不明确.

- Approximate entropy (ApEn) method

is also studied. They are applied to analyze the complexity of Logistic map. The conclusion is

that Lyapunov exponent and K-S entropy have approximately linear relation with complexity,

while it is difficult to determine the relation between fractal and complexity.