Below, you can find answers to the following questions:
What is the .arff file?
Which program can create the .arff file?
Where can you find a description of the .arff format?
What can convert .arff files to a different format?
Which MIME-type is associated with the .arff extension?
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. About ARFF Files. Our goal is to help you understand what a file with a *.arff suffix is and how to open it. The Attribute-Relation File Format file type, file format description, and Mac, Windows, and Linux programs listed on this page have been individually researched and verified by the FileInfo team.
Weka Attribute-Relation File Format
ARFF file is an Attribute-Relation File Format. Weka is a popular suite of machine learning software written in Java, developed at the University of Waikato. An ARFF (Attribute-Relation File Format) file is an ASCII text file that describes a list of instances sharing a set of attributes.
Category: Data files
Application:Weka
Mime-type: application/octet-stream
Magic string (ASCII): -
-
-
-
Other types of files may also use the .arff file extension. If you have helpful information about .arff extension, write to us!
Is it possible that the filename extension is misspelled?
We found the following similar extensions in our database:
FRAMES Air Flux File
BART Animated File Format
WebEx Advanced Recording
Axon IW Raw Image
Roproc Format File Data
Extensible Attribute-Relation File Format
The .arff filename extension is often given incorrectly!
According to the searches on our site, these misspellings were the most common in the past year:
Can't open a .arff file?
If you want to open a .arff file on your computer, you just need to have the appropriate program installed. If the .arff association isn't set correctly, you may receive the following error message: Windows 95 psp using dosbox download for windows.
Windows can't open this file: File: example.arff To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.
To change file associations:
Right-click a file with the extension whose association you want to change, and then click Open With.
In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
Select the Always use the selected program to open this kind of file check box.
Supported operating systems
Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android
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ARG file extension »
You must be able to load your data before you can start modeling it.
In this post you will discover how you can load your CSV dataset in Weka. After reading this post, you will know:
About the ARFF file format and how it is the default way to represent data in Weka.
How to load a CSV file in the Weka Explorer and save it in ARFF format.
How to load a CSV file in the ArffViewer tool and save it in ARFF format.
This tutorial assumes that you already have Weka installed.
Discover how to prepare data, fit models, and evaluate their predictions, all without writing a line of code in my new book, with 18 step-by-step tutorials and 3 projects with Weka.
Let’s get started.
How To Load CSV Machine Learning Data in Weka Photo by Thales, some rights reserved.
How to Talk About Data in Weka
Machine learning algorithms are primarily designed to work with arrays of numbers.
This is called tabular or structured data because it is how data looks in a spreadsheet, comprised of rows and columns.
Weka has a specific computer science centric vocabulary when describing data:
Instance: A row of data is called an instance, as in an instance or observation from the problem domain.
Attribute: A column of data is called a feature or attribute, as in feature of the observation.
Each attribute can have a different type, for example:
Real for numeric values like 1.2.
Integer for numeric values without a fractional part like 5.
Nominal for categorical data like “dog” and “cat”.
String for lists of words, like this sentence.
On classification problems, the output variable must be nominal. For regression problems, the output variable must be real.
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Data in Weka
Weka prefers to load data in the ARFF format.
ARFF is an acronym that stands for Attribute-Relation File Format. It is an extension of the CSV file format where a header is used that provides metadata about the data types in the columns.
For example, the first few lines of the classic iris flowers dataset in CSV format looks as follows: