在NetLogo中建立自组织网络的困难

Question

我对网络标识很陌生，我正在尝试构建一个网络，在这个网络中，节点有一个随机数，随滴答而变化，然后随机连接到其他节点。一旦建立了连接，我需要:如果两个节点之间的数目相同，那么链接就会结晶并改变颜色，否则它就会被删除，这个过程会被重复，直到所有节点都有相同的随机值。提前感谢

Answer 1

在评论中作出澄清之后..。

您提到的事情可以以非常简单的方式完成，因此希望您可以使用下面的解释和关键字浏览NetLogo手册(特别是NetLogo字典)，并完全熟悉正在发生的事情。

首先，让我们设置一些东西

globals [
; You'll probably want to declare these two variables directly
; in the Interface with a slider or something, but here I'll
; set them up from within the Code section.

 number-of-turtles
 level-of-randomness 
]

turtles-own [
 my-number
 connected?
]


to setup
  clear-all
  reset-ticks
  
  set-globals
  
  create-turtles number-of-turtles [
   setxy random-xcor random-ycor
   set connected? false
  ]
end


to set-globals
  set number-of-turtles 500
  set level-of-randomness 1000
end

到目前为止，你有很多海龟分散在它们的环境中，每个人都可以访问几个全局变量，还有几个属于每个海龟的变量来跟踪它们的状态。

根据你所描述的逐字逐句地说，你可以说：

to go.v1
; This first block of commands below is to get rid of the links that
; emerged in the previous iteration of 'go.v1', but that
; you don't want to keep because they link turtles with
; different 'my-number'. You will also need to include the
; stop condition that best suits you.
  ask links with [color != green] [
   die
  ]

; Insert here a stop condition.

  ask turtles with [connected? = false] [
   set my-number random level-of-randomness
  ]

; The 'let' command creates a local variable.
  ask turtles [
   let target one-of other turtles
   create-link-with target

; The statement below containing "[who] ..." is how you need to
; call a link: 'who' is a built-in turtle-own variable reporting
; the ID number of the turtle, and to report a link you will need
; to give it the two IDs of the two turtles being connected.

   if (my-number = [my-number] of target) [
     ask link ([who] of self) ([who] of target) [
       set color green
      ]
     if (connected? = false) [
       set connected? true 
      ]
     if ([connected?] of target = false) [
       ask target [
         set connected? true
        ]
      ]
    ]
  ]
  tick
end

上面的代码按照您的话做了:每个海龟总是与另一个海龟创建链接，然后测试条件，并基于该条件(其结果存储为链接的颜色:只有好的链接才成为green)，在下面的go.v1迭代开始时保留或删除链接。

然而，尽管您可能有理由这样做，但您可能只是对一个需要较少计算的替代方案感到满意：

to go.v2
  ; Insert here a stop condition.
  
  ask turtles with [connected? = false] [
   set my-number random level-of-randomness
  ]

  ask turtles [
   let target one-of other turtles
    
   if (my-number = [my-number] of target) [
     create-link-with target [
       set color green
       ask both-ends [
         if (connected? = false) [
           set connected? true
          ]
        ]
      ]
    ]
  ]
  tick
end

这样，海龟在创建任何链接之前都会评估潜在的伴侣，并且只有在my-number相同的情况下才会继续创建链接。这样，就没有必要创建并消除所有不必要的链接( my-number条件无论如何都必须在go.v1中测试)。