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关于 dalex 包的小困惑

如何解决关于 dalex 包的小困惑

你好 mlr3 团队。

我有一个关于 mlr3 书中提供的 Dalex 包的问题。具体来说,这里

ranger_exp <- explain_mlr3(fifa_ranger,data     = fifa,y        = fifa$value_eur,label    = "Ranger RF",colorize = FALSE)

(a) 'fifa' here is a training data or full data which also include test sets?

(b) I read somewhere that it should not include the class variable but here it appears to include? 

(c) For the instance level explanation,like fifa["Cristiano Ronaldo",],which feature/column of the observation/row need to be included here,if we do not have a unique column (like iD or name) in our dataset? 

提前致谢

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