I want to run a logreg
regression. I obtain the following error after running my code on R:
Something is wrong; all the Accuracy metric values are missing:
Accuracy Kappa
Min. : NA Min. : NA
1st Qu.: NA 1st Qu.: NA
Median : NA Median : NA
Mean :NaN Mean :NaN
3rd Qu.: NA 3rd Qu.: NA
Max. : NA Max. : NA
NA's :9 NA's :9
Error in train.default(x, y, weights = w, ...) : Stopping
In addition: There were 19 warnings (use warnings() to see them)
Here is my code:
## Data
donner <- read.delim("http://web.as.uky.edu/statistics/users/pbreheny/760/data/donner.txt")
set.seed(1234)
library(caret)
donner$Age <- as.numeric(donner$Age)
donner$Status <- as.factor(donner$Status)
donner$Sex <- as.numeric(donner$Sex)
splitIndex <- createDataPartition(donner$Status, p = .80, list = FALSE, times = 1)
trainDF <- donner[splitIndex,]
testDF <- donner[-splitIndex,]
ctrl <- trainControl(method = "cv", number = 2)
logregmodel <- train(Status ~ ., data = donner, method = "logreg", trControl = ctrl)
EDIT 1:
I changed the status to binary (0 and 1) and I still have some errors. Here is the new code:
## Data
donner <- read.delim("http://web.as.uky.edu/statistics/users/pbreheny/760/data/donner.txt")
set.seed(1234)
library(caret)
donner$Age <- as.numeric(donner$Age)
donner$Status <- as.integer(donner$Status)-1
donner$Sex <- as.numeric(donner$Sex)-1
splitIndex <- createDataPartition(donner$Status, p = .80, list = FALSE, times = 1)
trainDF <- donner[splitIndex,]
testDF <- donner[-splitIndex,]
ctrl <- trainControl(method = "cv", number = 2)
donner$Status <- as.factor(donner$Status)
logregmodel <- train(Status ~ ., data = donner, method = "logreg", trControl = ctrl)
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