Yet Another ARFF Reader
So you need to read an ARFF file. You can use:
foreign::read.arff, but only on dense format.farff::readARFF, but only on dense format.RWeka::read.arff, but you need to configure Java.yarr::read.arff can read dense and sparse ARFF files, and it’s implemented in pure R.
The implementations in R are derivatives of those in mldr and mldr.datasets, packages for management of multilabel learning datasets.
remotes::install_github("fdavidcl/yarr")
library(yarr)
download.file("https://www.openml.org/data/download/1681111/phpEUwA95", "dexter.arff")
dexter <- read.arff("dexter.arff")
dexter
# An ARFF dataset: dexter
# 20001 attributes and 600 instances
# V0: numeric (min = 0, mean = 0.12, max = 72) 0, 0, 0, 0, 0...
# V1: numeric (min = 0, mean = 0, max = 0) 0, 0, 0, 0, 0...
# V2: numeric (min = 0, mean = 0, max = 0) 0, 0, 0, 0, 0...
# V3: numeric (min = 0, mean = 1.165, max = 427) 0, 0, 0, 0, 0...
# V4: numeric (min = 0, mean = 0.57, max = 342) 0, 0, 0, 0, 0...
# V5: numeric (min = 0, mean = 0.386666666666667, max = 116) 0, 0, 0, 0, 0...
# V6: numeric (min = 0, mean = 0, max = 0) 0, 0, 0, 0, 0...
# V7: numeric (min = 0, mean = 0.448333333333333, max = 121) 0, 0, 0, 0, 0...
# V8: numeric (min = 0, mean = 0.358333333333333, max = 84) 0, 0, 0, 0, 0...
# ...
# class: {-1,1} (-1: 300, 1: 300) 1, 1, 1, -1, 1...
relation(dexter)
# [1] "dexter"
write.arff(dexter, "dexter-new.arff"){index value}, e.g. {0 1, 20 1})?c in @relation.