Reads data from Weka Attribute-Relation File Format (ARFF) files.
a character string with the name of the ARFF
file to read from, or a
connection which will be
opened if necessary, and if so closed at the end of the function
A data frame containing the data from the ARFF file.
Attribute-Relation File Format https://waikato.github.io/weka-wiki/formats_and_processing/arff/