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What can I conclude, now I've concluded that the strategies 68 through 100 essentially don't exist or have been deleted.
目前为止我们能得到什么结论,68到100的选项不存在了,或者说已经被剔除了
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One tip about this, try to identify all the dominated strategies of all players before you delete, then delete.
这里有一个窍门,在剔除之前试着找出,所有参与人的劣势策略,然后再剔除它们
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One example of a way people have used this, is that they've taken the gene that ordinarily produces a milk protein.
利用这种方式的一个例子就是,他们把原本产羊奶蛋白的基因剔除
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There's still plenty of it the food supply, believe me, but some companies have taken them out.
相信我,其实还有很多厂商仍在使用,但有些公司已经将反式脂肪剔除了
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How do we get the religious actors off the stage? -Right.
如何才能剔除宗教因素？，-是的。
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Well, now we're talking some real after inflation returns that can be consumed.
现在看看剔除通货膨胀后,可供消费的真实回报率
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But there're a few details to take away.
我们先剔除这些细节。
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But it is the case that they're dominated once we delete the dominated strategies: once we delete 67 and above.
但一旦我们剔除了原劣势策略,即选择67及大于67的数之后,他们才是劣势策略
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Once you delete the dominated strategies, then you kind of go through it again and then 2 is dominated by 3.
一旦你剔除了劣势策略,再次审视这个博弈时,立场2劣势于立场3
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I threw away all strategies that were never a best response, then I looked at the strategies that were left.
我剔除了非最佳对策的策略,然后我看看还剩下哪些策略
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We can delete those strategies and once we delete those strategies, all that's left are choices 1 through 67.
我们可以剔除那些策略,一旦如此,剩下只有1到67的数
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If I'm going to make insulin from this I have to know that I've got the introns spliced out correctly.
如果我要用这些来生成胰岛素,我就得知道是不是把内含子都准确剔除了
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We said players should never play a strategy that's never a best response to anything, so we threw those away.
我们学到了参与人不应该选择,非最佳对策的策略,应该剔除它们
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We could do that; we could try iteratively deleting dominated strategies and see if that process converged.
可以尝试迭代剔除劣势策略,然后看看会不会趋向于某种结果
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But we're seeing that these are choices, that perhaps, are ruled out by this kind of reasoning.
然而我们发现这些策略,会因为某种推理而被剔除
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So if we do the procedure of iteratively deleting dominated strategies, going back again, looking what's dominated, all that's left is 5 and 6.
如果我们按照这个程序,迭代剔除劣势,不断回头看看那些策略是劣势的,最终将只剩下立场5和6
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But they are dominated once we deleted not just the dominated strategies, but also the strategies that were dominated once we deleted the dominated strategies.
但是当我们我们,剔除原博弈中的劣势策略以及,第一次剔除之后仍处于劣势的策略后,它们就又继续成为了劣势策略
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And when I threw those away, I was left once again with a little box, and I could do it again, and again, and again.
剔除之后,我得到了更小的方格,我可以一次一次的重复这个过程
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So when we looked at domination and deleted dominated strategies, we got nowhere here.
因此当我们寻找并剔除劣势策略时,我们是无从下手的
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So have I convinced you that there's something you can do with iterative deletion?
大家都理解,有关迭代剔除的内容了吧
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I said those strategies that were a best response to things that have now been thrown away, but not best response otherwise, I can throw those away too.
这些策略是已被我们的剔除策略的,最佳对策,但仍不是最佳对策,我就剔除它们
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So all of the strategies 45 through 67, are gone now.
至此所有45到67的数也被剔除了
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We also saw in that numbers game last time that in some games, but by no means all games, in some games this process actually converges to a single choice.
我们同样可以发现,在某些博弈中,不是所有的博弈,迭代剔除劣势策略,最终会导致唯一的选择
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The strategies I'm about to throw away now, they're not--it isn't that they're not best responses, they are best responses to something.
我要剔除的策略,并非都不是最佳对策,它们可能是某种情况下的最佳对策
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Delete those. Delete those for everyone else, because everyone else is not going to play a dominated strategy.
应该剔除它们,其他人也会这么做,因为其他人也不会,采用劣势策略
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We used iterative deletion in a relatively abstract setting, or not abstract, rather a play setting last time in which were choosing numbers.
我们在相对抽象的背景下探讨迭代剔除,其实也没那么抽象,比如上一讲,我们做的选数字的游戏
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So if the only tool I taught you in this class was dominated strategies and the iterative deletion of dominated strategies we'd be stuck.
所以之前讲的,不要采用劣势策略,和迭代剔除劣势策略在这里就不奏效了
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If we delete the strategies 1 and 10, which were dominated, then does 3 dominate 2?
如果我们剔除劣势策略1和10,那么策略3优于策略2吗
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Great animation but not perhaps a good date movie, so it's gone. Everyone see that?
虽然这部动画很好但显然不适合约会看,把它剔除了,大家都看明白了吧
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