[R] Error in Rose Method (class balancing)

[David Winsemius]

On 7/22/20 3:43 PM, Neha gupta wrote:
> Hello,
>
>
> I get the following error when I use the ROSE class balancing method but
> when I use other methods like SMOTE, up, down, I do not get any error
> message.
>
>
> Something is wrong; all the ROC metric values are missing:
>
> ROC Sens Spec
>
> Min. : NA Min. : NA Min. : NA
>
> 1st Qu.: NA 1st Qu.: NA 1st Qu.: NA
>
> Median : NA Median : NA Median : NA
>
> Mean :NaN Mean :NaN Mean :NaN
>
> 3rd Qu.: NA 3rd Qu.: NA 3rd Qu.: NA
>
> Max. : NA Max. : NA Max. : NA
>
>
>
> library(DMwR)
>
> d=readARFF("bughunter.arff")

After installing that package and loading pkg:DMwR I get:


Error in readARFF("bughunter.arff") : could not find function "readARFF"


Since you also posted in HTML, I suggest you read the Posting Guide, 
restart and R session and post a reproducible example that loads all 
needed packages and data.

-- 

David.

>
> index <- createDataPartition(d$`Bug class`, p = .70,list = FALSE)
>
> tr <- d[index, ]
>
> ts <- d[-index, ]
>
> boot3 <- trainControl(method = "repeatedcv", number=10,
> repeats=10,classProbs = TRUE,verboseIter = FALSE,
>
> summaryFunction = twoClassSummary, sampling = "rose")
>
> set.seed(30218)
>
> ct <- train(`Bug class` ~ ., data = tr,
>
> method = "pls",
>
> metric = "AUC",
>
> preProc = c("center", "scale", "nzv"),
>
> trControl = boot3)
>
> getTrainPerf(ct)
>
> 	[[alternative HTML version deleted]]
>
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