我想优化 let node = SCNNode()
//I Configure node here
node.eulerAngles.x = -.pi / 2
node.geometry = plane
let cameraTransform = sceneView.session.currentFrame!.camera.transform
var translation = matrix_identity_float4x4
notifNode.simdTransform = matrix_multiply(cameraTransform, translation)
animate(notifNode) //This moves the node to position (0,0,0)
(ctree()
)的超参数的值。
我使用功能randomforest
。我收到以下错误:
tuneRF
这是我的代码:
Error in if (n == 0) stop("data (x) has 0 rows") :
argument is of length zero
这是我寻找library(party)
library(randomForest)
library(mlbench)
dat1 <- fread('https://archive.ics.uci.edu/ml/machine-learning-databases/abalone/abalone.data',stringsAsFactors=T)
## split data to train and test
set.seed(123)
dat1 <- subset(dat1, !is.na(V1))
smp_size =92
train_ind <- sample(seq_len(nrow(dat1)), size = smp_size)
train <- dat1[train_ind, ]
test <- dat1[-train_ind, ]
ct <- ctree(V1 ~ ., data = train)
mtry
答案 0 :(得分:1)
有几个问题,
bestmtry <- tuneRF(train[, V2:V9], train$V1, stepFactor = 1.5, improve = 1e-5, ntree = 500)
有效。