Yeats is obviously writing in the context of an Irish civil war, but it's also the case that he's writing in the shadow of the First World War as well.

叶芝显然是在爱尔兰国内战争时期进行创作的，但是同时他也是在,一战的阴影下写的。

耶鲁公开课 - 现代诗歌课程节选

So Player i's payoff "Ui," depends on all the choices in the class, in this case, including her own choice. Of course, a shorter way of writing that would be "Ui," it depends on the profile.

参与人i的收益Ui,由所有参与人的策略决定,当然也包括她自己的策略,简写应该是Ui,它由策略组合决定

耶鲁公开课 - 博弈论课程节选