紧急求助：Matlab输入延迟等类似的延迟是什么意思？

请问输入延迟等类似的延迟是什么意思？
比如说初始输入延迟Pi  初始层延迟Ai  最终输出延迟Pf  最终层延迟Af等怎么理解呢~  
最好能够举个例子说明一下，谢谢了~~
比如下边的例子：pi这么设置有什么影响？
P = {1 2 1 3 3 2};
Pi = {1 3};
T = {5.0 6.1 4.0 6.0 6.9 8.0};
net = newlind(P,T,Pi);
Y = sim(net,P,Pi)

时间延迟神经网络
是术语，用来构造线性神经网络的吧

是线性神经网络里边的参数，延迟Pi ， 初始层延迟Ai，  最终输出延迟Pf，  最终层延迟Af。但我看了所有的书上都没有写这几个参数更具体的意思，怎么设置。

自己顶一下

我也想知道。。敢问楼主知道了不？？

同求解释

MATLAB帮助文档中有个例子，好像是磁悬浮系统的一个应用，用到了输入延迟。
Simulate NARX Time Series Networks
This example trains an open-loop nonlinear-autoregressive network with external input, to model a levitated magnet system defined by a control current x and the magnet's vertical position response t, then simulates the network. The function preparets prepares the data before training and simulation. It creates the open-loop network's combined inputs xo, which contains both the external input x and previous values of position t. It also prepares the delay states xi.

[x,t] = maglev_dataset;
net = narxnet(10);
[xo,xi,~,to] = preparets(net,x,{},t);
net = train(net,xo,to,xi);
y = net(xo,xi)


This same system can also be simulated in closed-loop form.

netc = closeloop(net);
view(netc)
[xc,xi,ai,tc] = preparets(netc,x,{},t);
yc = netc(xc,xi,ai);