Question

我已经尝试过来自https://gist.github.com/zachmayer/5152157的zachmayer代码，但我收到错误＆＃34;是（all.models，＆＃34; caretList＆＃34;）不是TRUE＆＃34; ，运行caretEnsemble命令时。我应该使用caretList而不是只列出所有模型吗？感谢。

`#Train some models  
model1 <- train(X[train,], Y[train], method='gbm', trControl=myControl,
            tuneGrid=expand.grid(.n.trees=500, .interaction.depth=15,.shrinkage = 0.01))
model2 <- train(X[train,], Y[train], method='blackboost', trControl=myControl)
...
#Make a list of all the models  
all.models <- list(model1, model2, model3, model4, model5, model6, model7, model8, model9, model10)

#Make a greedy ensemble
 greedy <- caretEnsemble(all.models, iter=1000L)
Error: is(all.models, "caretList") is not TRUE`

Answer 1

您可以使用常规功能c()

供参考：https://rdrr.io/cran/caretEnsemble/man/c.caretList.html

P.S。同样在fitControl()中，您必须设置savePredictions = TRUE

caretEnsemble失败的是（all.models，＆＃34; caretList＆＃34;）不是TRUE

1 个答案: