3 ms·
It's not an exponential. It's a shifted sigmoid.
by babesh 7y ago
It's not an exponential. It's a shifted sigmoid.
- the8472 7y agoThe logistic function specifically, which is a blend of an exponential growth and an exponential asymptote. So initially it behaves indistinguishably from an exponential function, until you get close to the inflection point.
- dnautics 7y agoNo it's not the logistic function. Sigmoid is a general term of the shape, logistic specifically refers to an equation that's almost certainly not correct. It's probably close to stretched exponential, which is a reasonable approximation of the curve of an autocatalytic process that is controlled by stochastic collisions that can self-exhaust, but even that's not exactly correct.