Question

在操作ranForest后,我有一份标的,其中包含一个星体。如果我把物体名称和打上<代码> CTRL + R,我收到下列文件:

> RF
    Call:
     randomForest(x = iris[-5], iris[5],      ntree = 50, sampsize = c(100), importance = TRUE,      do.trace = F, forest = TRUE) 
                   Type of random forest: regression
                         Number of trees: 50
    No. of variables tried at each split: 2

              Mean of squared residuals: 0.03852423
                        % Var explained: 13.13

My question is how would I just print the last line (% Var explained: 13.13)? I know for some functions there is a call like hist$breaks that will give a specific part of the object. I can t find anything similar for this object. Any suggestions?

Answer 1

所解释的百分数差异被认为与R^2型数值相类似。如果看上<代码>?randomForest,请看看该物体的某一数值通过$rsq查询。仅增加100人。

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