信息擴散

Question

我遇到了netlogo的問題：我想在網絡中傳播信息。一隻烏龜擁有這些信息，並以不變的概率將其提供給其鏈接鄰居。這是我的代碼至今：

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 

現在我想知道：如何確保，每龜只有一次所得到的信息，而不是告知兩次？我試過「如果沒有通知？」，但只給我錯誤信息。如果我想讓信息以2％的常數概率傳播，我是否得到了命令「if（random-float 1 < = 0.02）」？

Answer 1

這應該工作（未測試）。假設您在設置海龜時完成了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