Synchronous asynchronous updating cellular automata joyce f lucas adultfriendfinder
They experimented with three schemes: (1) at each time step, a block is chosen at random with replacement; (2) at each time step, a block is chosen at random without replacement; (3) at each time step, a block is chosen according to a fixed update order.There are different types of asynchronous updating, and different authors have described these in different ways.
Cellular automata, as with other multi-agent system models, usually treat time as discrete and state updates as occurring synchronously.
Moreover, the general construction and the proof also applies to the more general class of synchronous automata networks (inhomogeneous networks of automata over directed graphs, allowing external inputs – which includes cellular automata as a special case), showing constructively how their behaviour may be asynchronously realized by a corresponding asynchronous automata network.
Several studies have implemented asynchronous models and found that their behaviour differs from the synchronous ones.
Orponen (1997) has demonstrated that any synchronously updated network of threshold logic units (see Artificial neuron) can be simulated by a network that has no constraints on the order of updates. (1997) investigated the evolution of non-uniform CAs that perform specific computing tasks.
These models relax the normal requirement of all nodes having the same update rule. Nodes within a block were updated synchronously, but blocks were updated asynchronously.