限制代理可以建立的链接数量 [英] Limit the number of links an agent can make

问题描述

如果海龟的 var1 值相等，我会链接它们(这很好用).我想将链接数量限制为三个.我在代码的链接部分之前添加了一个 IF 语句(If count my-links <3)，但它不起作用；代理继续链接超过我设置的最大值.我读了另一个问题 如何限制代理可以在模型中创建的链接数量 但这似乎并不能完全满足我在这里的尝试.我做错了什么?

I have turtles linking if they have an equal value for var1 (this works fine). I want to limit the number of links to just three. I added an IF statement before the linking part of the code (If count my-links < 3), but it does not work; the agents continue to link past the max value I set. I read the other question How to limit the number of links an agent can make in a model but that doesn't seem to quite do what I am attempting here. What am I doing wrong?

to communicate
  If count my-links < 3
  [
  ask other xagents in-radius 5 with [var1 = [var1] of myself]
  [create-links-with yagents in-radius 5 with [var1 = [var1] of myself]
    [
      set color white
      set thickness 0.1
    ]
  ]
  ]
end

推荐答案

在让海龟创建新链接之前限制它们的链接数:

通过查看您的完整模块，正如@JenB 提到的那样，似乎没有条件限制目标海龟用于建立链接的链接数量.

Limit number of links for the turtles before letting them create new ones:

By looking at your complete module, as @JenB mentioned that, it seems that there's no condition to limit number of links that the targeted turtle has for making a link.

这是第一步:

to communicate
  If count my-links < 3
  [
  ask other xagents in-radius 5 with [(var1 = [var1] of myself) and (count my-links < 3)]
  [create-links-with yagents in-radius 5 with [(var1 = [var1] of myself) and (count my-links < 3)]
    [
      set color white
      set thickness 0.1
    ]
  ]
  ]
end

但是如果没有这样的代理怎么办?(半径为 5，具有相同的 val1 和小于 3 的链接)可能需要一个 if 语句.

But what if there's no agent like that? (in radius of 5, with the same val1 and links less than 3) Probably an if-statement is needed.

我还认为您需要在代码中使用 one-of 以在每个步骤中只创建一个链接.

I also think you need to use one-of in your code to make only one link in each step.

您可以在 communicate 子过程的末尾使用它来终止额外的链接.它有一个缺点是随机删除链接，也可能从链接较少的海龟中删除链接，而不是那些也可能有额外链接的海龟.

You can have this at the end of your communicate sub-procedure to kill the extra links. It has a down-side of random removing links and also may remove the link from turtles with fewer link instead of the ones that may also have extra links.

ask turtles with [count my-links > LIMIT] [ if count my-links > LIMIT [ask n-of (count my-links - LIMIT) my-links [die]] ]

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