提问人:Julien 提问时间:9/7/2023 最后编辑:desertnautJulien 更新时间:9/7/2023 访问量:44
names(res$trainingData) %in% as.character(form[[2]]) 中的错误:缺少参数“form”,无默认值
Error in names(res$trainingData) %in% as.character(form[[2]]) : argument "form" is missing, with no default
问:
尝试调整 XGBoost 模型的超参数时:
library(caret)
ctrl <- trainControl(
method = "cv",
number = 2,
verboseIter = TRUE,
search = "grid"
)
param_grid <- expand.grid(
nrounds = c(1000),
eta = c(0.01, 0.1, 0.3),
max_depth = c(3),
min_child_weight = c(1),
subsample = c(0.9),
colsample_bytree = c(0.9),
gamma = c(0)
)
xgb_tune <- train(
formula = as.formula(paste("mpg", "~ .")),
data = mtcars,
method = "xgbTree",
trControl = ctrl,
tuneGrid = param_grid
)
我收到以下警告和错误:
WARNING: src/learner.cc:767:
Parameters: { "formula" } are not used.
Error in names(res$trainingData) %in% as.character(form[[2]]) :
argument "form" is missing, with no default
答:
1赞
desertnaut
9/7/2023
#1
正如警告的那样,该函数不包含参数,您实际上并不需要它;将其更改为简单train
formula
xgb_tune <- train(
mpg~., # change here
data = mtcars,
method = "xgbTree",
trControl = ctrl,
tuneGrid = param_grid
)
你会没事的(刚刚测试过)。
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