R中train()函数的错误 [英] Error on train() function in R

问题描述

我正在尝试从在线示例中学习，并陷入其中.特别是当我使用train()函数时.我收到一个错误消息，说火车不是功能.我做了研究，并相信火车是一种功能. 我复制的代码是: xgb_tree_model =火车(SalePrice〜.，data = train，method ="xgbTree"，trControl = control，tuneGrid = grid，metric ="rmsle"，maximum = FALSE)

I am trying to learn from an online example and got stuck on one part. Particularly when i use train() function. I got an error saying train isn't a function. I did research and believe train is a function. The code i copied was : xgb_tree_model = train(SalePrice~., data=train, method="xgbTree", trControl=control, tuneGrid=grid, metric="rmsle", maximize = FALSE)

我正在使用的网站是 http://hamelg.blogspot.com/2016/09/kaggle-home-price-prediction-tutorial.html

推荐答案

您可以逐步检查.

1. 检查软件包是否已安装.使用以下命令进行检查.

1. Check if package is installed. Check using following command.

find.package(c("caret"),lib.loc=NULL,quiet=FALSE, verbose = getOption("verbose"))

如果找到，它将向您显示程序包路径，否则向您显示错误消息.

it will show you package path if found else show you error message.

如果未安装软件包，请使用install.packages("caret")进行安装 这将安装软件包.

If package is not installed, install it by using install.packages("caret") this will install package.

现在使用library(caret)

调用train()函数.现在您不应该收到错误消息.

call train() function. Now you should not get error message.

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