What is arff file

Question

i used this file in wekka software.. what is this file actually?

Answer 1

A good explanation with relevant links to follow:
https://www.cs.waikato.ac.nz/ml/weka/arff.html

Answer 2

An ARFF (Attribute-Relation File Format) file is an ASCII text file that describes a list of instances sharing a set of attributes. ARFF files were developed by the Machine Learning Project at the Department of Computer Science of The University of Waikato for use with the Weka machine learning software.

Answer 3

Sadly, I was going to offer that those are the files my dog makes.