Extract text from Attribute-relation files (XRFF)
To convert XRFF Data files to another format, you need Weka or other Data software.
To convert other file formats to the "Machine Learning Dataset" file type, you need software like Weka or a similar tool.
The .XRFF file is an Extensible Attribute-Relation File Format document. It is primarily used by Weka, a popular machine learning workbench developed at the University of Waikato. This file stores structured dataset information - including variables, attributes, weights, and data instances - using an XML-based schema. It serves as the modern, extensible alternative to the older plain-text ARFF format.
Using .XRFF in production comes with distinct disadvantages. Because it relies on verbose XML tags to wrap every single data point and header, files become extremely bloated and can easily exceed hundreds of megabytes. Furthermore, mainstream data analysis tools like Microsoft Excel or Python's Pandas cannot open .XRFF files out of the box without custom XML parsing scripts. It is a highly specialized format heavily locked into the Weka ecosystem.
When you need to share data with stakeholders or use other machine learning libraries like Scikit-Learn, you must convert the file. The most pragmatic target formats are CSV for universal spreadsheet compatibility, standard ARFF for classic Weka compatibility with a smaller file footprint, or JSON for modern web applications. Converting to CSV will strip away specialized metadata (like attribute weights or relational types), but the core rows and columns will remain intact.
This file format is notoriously difficult to open or convert with standard online tools because they do not understand Weka's highly specific XML schema (<dataset>, <header>, <body>, <instances>). Often, only the original Weka software can properly read or export the data. Because .XRFF is essentially plain text under the hood, our analysis detects the supported underlying XML structure, making raw viewing or data extraction possible even without Weka installed.
Convert.Guru analyzes your XRFF file, detects the exact format, and lets you read the text inside.
If you want to convert XRFF file to , you can use Weka or similar software from the "Machine Learning Dataset Storage" category. In the File menu, look for Save As… or Export….
To convert files to XRFF, try Weka or another comparable tool in the "Machine Learning Dataset Storage" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our XRFF converter.