.XDF File Extension

Microsoft Machine Learning Server Data File

Developer Microsoft
3.7  |  9 Votes

What is an XDF file?

XDF files are used by Microsoft Machine Learning Server, an enterprise machine learning platform used by data scientists and data engineers. They store blocks of binary data formatted in columns and rows. XDF files also contain metadata about the data set, including the names of data variables, descriptions of the variables, and how the data is stored (integer, factor, etc.).

More Information

The XDF format is the native file format used by Machine Learning Server to store collected data. Since Machine Learning Server may be implemented by a variety of organizations, XDF files may store various types of data depending on the context in which they are used. For example, an airline may use Machine Learning Server to record and analyze on-time performance data. The corresponding XDF file might include the departure time, arrival time, flight number, origin airport, destination airport, flight distance, and date of each flight.

XDF files often store large amounts of recorded data in a single file. However, as data sets grow, XDF files may be split into smaller, compressed files to save space. Each block of data stored in an XDF file can be compressed at a custom level.

Machine Learning Server is utilized by organizations looking to add machine learning capabilities to their existing enterprise software via open source languages, such as R and Python. The software can be run on-premises on Windows, Linux, SQL Server, and Spark, and in the cloud on Azure virtual machines, SQL Server virtual machines, and more.

NOTE: While XDF files are typically created by Machine Learning Server software, the files may also be created by other programs, such as XDF Output tool.

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Programs that open or reference XDF files

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