[R] Error in Rose Method (class balancing)

[David Winsemius]

On 7/23/20 9:34 AM, Neha gupta wrote:
>
> Hello David, file not found should be the path problem I guess. I just 
> forgot the pROC library, which I included here. These are all the 
> libraries I am using.
>
> library(caret)
> library(farff)
> library(DMwR)
> library(pROC)
> library(pls)
>
> setwd("C:/Users/PC/Documents")
> d=readARFF("bughunter.arff")


I suppose *you* might have such a file in that directory, but do you 
assume that *we* will????

A reproducible example will allow others to run your code. Seems fairly 
clear that we are not there yet.

-- 

David.

> dput( head( d, 30 ) )
>
> index <- createDataPartition(d$`Bug class`, p = .70,list = FALSE)
>
> tr <- d[index, ]
>
> ts <- d[-index, ]
>
> boot3 <- trainControl(method = "repeatedcv", number=10, 
> repeats=10,classProbs = TRUE,verboseIter = FALSE,
>
> summaryFunction = twoClassSummary, sampling = "rose")
>
> set.seed(30218)
>
> ct <- train(`Bug class` ~ ., data = tr, method = "pls", metric = 
> "AUC", preProc = c("center", "scale", "nzv"), trControl = boot3)
>
> getTrainPerf(ct)
>
>
>
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>
> On Thu, Jul 23, 2020 at 4:01 PM Neha gupta <neha.bologna90 using gmail.com 
> <mailto:neha.bologna90 using gmail.com>> wrote:
>
>
>     Hello David, thanks for your reply. I have added the information.
>
>     library(caret)
>     library(farff)
>     library(DMwR)
>
>     d=readARFF("bughunter.arff")
>     dput( head( d, 30 ) )
>
>     index <- createDataPartition(d$`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)
>
>
>     On Thu, Jul 23, 2020 at 1:08 AM David Winsemius
>     <dwinsemius using comcast.net <mailto:dwinsemius using comcast.net>> wrote:
>
>
>         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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>         > PLEASE do read the posting guide
>         http://www.R-project.org/posting-guide.html
>         > and provide commented, minimal, self-contained, reproducible
>         code.
>

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