UCI Machine Learning Repository

Center for Machine Learning and Intelligent Systems

About Citation Policy Donate a Data Set Contact

View ALL Data Sets

× Check out the beta version of the new UCI Machine Learning Repository we are currently testing! Contact us if you have any issues, questions, or concerns. Click here to try out the new site.

Welcome to the UC Irvine Machine Learning Repository!

We currently maintain 622 data sets as a service to the machine learning community. You may view all data sets through our searchable interface. For a general overview of the Repository, please visit our About page. For information about citing data sets in publications, please read our citation policy. If you wish to donate a data set, please consult our donation policy. For any other questions, feel free to contact the Repository librarians.

Supported By:

In Collaboration With:

Latest News:
09-24-2018:	Welcome to the new Repository admins Dheeru Dua and Efi Karra Taniskidou!
04-04-2013:	Welcome to the new Repository admins Kevin Bache and Moshe Lichman!
03-01-2010:	Note from donor regarding Netflix data
10-16-2009:	Two new data sets have been added.
09-14-2009:	Several data sets have been added.
03-24-2008:	New data sets have been added!
06-25-2007:	Two new data sets have been added: UJI Pen Characters, MAGIC Gamma Telescope
Featured Data Set: Gisette Task: Classification Data Type: Multivariate # Attributes: 5000 # Instances: 13500
GISETTE is a handwritten digit recognition problem. The problem is to separate the highly confusible digits '4' and '9'. This dataset is one of five datasets of the NIPS 2003 feature selection challenge.