network-programming - 信息扩散

Question

我遇到了 netlogo 的问题：我想在网络中传播信息。一只乌龟拥有信息并以恒定概率将其提供给它的链接邻居。这是我到目前为止的代码：

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：我怎样才能确保每只乌龟只获得一次信息而不会被告知两次？我试过“如果没有通知？”，但这只会让我收到错误消息。如果我希望以 2% 的恒定概率传播信息，我是否得到了命令“if (random-float 1 <= 0.02)”？

Answer 1

这应该有效（未经测试）。假设您set informed? FALSE在设置海龟时已经完成。

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