lightgbm的R语言代码
时间: 2023-10-15 18:08:25 浏览: 127
以下是使用R语言实现LightGBM的示例代码:
首先,需要安装LightGBM库和相关依赖:
```R
install.packages("devtools")
devtools::install_github("Microsoft/LightGBM", subdir = "R-package")
```
然后,加载库并准备数据:
```R
library(lightgbm)
data(agaricus.train, package='lightgbm')
train <- agaricus.train$data
label <- agaricus.train$label
```
接下来,设置模型参数并训练模型:
```R
params <- list(objective = "binary",
metric = "binary_logloss",
num_leaves = 10,
learning_rate = 0.1,
bagging_fraction = 0.6,
bagging_freq = 5,
verbose = -1)
train_data <- lgb.Dataset(train, label=label)
model <- lgb.train(params, train_data, nrounds=100)
```
最后,使用模型进行预测:
```R
data(agaricus.test, package='lightgbm')
test <- agaricus.test$data
pred <- predict(model, test)
```
以上是LightGBM在R语言中的基本用法,可以根据具体需求调整参数和数据处理方式。
阅读全文