信息扩散

Question

我遇到了netlogo的问题：我想在网络中传播信息。一只乌龟拥有这些信息，并以不变的概率将其提供给其链接邻居。这是我的代码至今：

to spread 
    if (count turtles with [informed? = true] > .7 * count turtles) [stop] 
    ask turtles with [ informed? = true ] 
    [ 
     ask link-neighbors 
     [ 
     if (random-float 1 <= 0.02) 
      [ 
      set informed? true 
      show-turtle 
      set color green 
      ] 
     ] 
     ] 

    set num-informed count turtles with [informed? = true] 
    tick 
end 

现在我想知道：如何确保，每龟只有一次所得到的信息，而不是告知两次？我试过“如果没有通知？”，但只给我错误信息。如果我想让信息以2％的常数概率传播，我是否得到了命令“if（random-float 1 < = 0.02）”？

Answer 1

这应该工作（未测试）。假设您在设置海龟时完成了set informed? FALSE。

to spread 
    if (count turtles with [informed?] > .7 * count turtles) [stop] 
    ask turtles with [ informed? ] 
    [ ask link-neighbors with [ not informed? ] ; **<= my change** 
    [ if (random-float 1 <= 0.02) 
     [ set informed? true 
     show-turtle 
     set color green 
     ] 
    ] 
    ] 

    set num-informed count turtles with [informed?] 
    tick 
end