Center for Machine Learning and Intelligent Systems
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Welcome to the UC Irvine Machine Learning Repository!

We currently maintain 211 data sets as a service to the machine learning community. You may view all data sets through our searchable interface. Our old web site is still available, for those who prefer the old format. 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. We have also set up a mirror site for the Repository.

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Latest News:
2010-03-01: Note from donor regarding Netflix data
2009-10-16: Two new data sets have been added.
2009-09-14: Several data sets have been added.
2008-07-23: Repository mirror has been set up.
2008-03-24: New data sets have been added!
2007-06-25: Two new data sets have been added: UJI Pen Characters, MAGIC Gamma Telescope
2007-04-13: Research papers that cite the repository have been associated to specific data sets.


Featured Data Set:  Ozone Level Detection

Task: Classification
Data Type: Multivariate, Sequential, Time-Series
# Attributes: 73
# Instances: 2536

Two ground ozone level data sets are included in this collection. One is the eight hour peak set (eighthr.data), the other is the one hour peak set (onehr.data). Those data were collected from 1998 to 2004 at the Houston, Galveston and Brazoria area.
Newest Data Sets:
2011-09-13:
 Amazon Access Samples
2011-08-09:
 Vertebral Column
2011-07-27:
 Vicon Physical Action Data Set
2011-07-27:
 EMG Physical Action Data Set
2011-07-26:
 OpinRank Review Dataset
2011-07-07:
 Relative location of CT slices on axial axis
2011-06-11:
 Amazon Commerce reviews set
2011-05-22:
 PEMS-SF
2011-04-01:
 Online Handwritten Assamese Characters Dataset
2011-03-29:
 PubChem Bioassay Data
2011-03-10:
 Record Linkage Comparison Patterns
2011-03-02:
 Communities and Crime Unnormalized
Most Popular Data Sets (hits since 2007):
265619:
 Iris
193991:
 Adult
169500:
 Wine
136331:
 Breast Cancer Wisconsin (Diagnostic)
119133:
 Car Evaluation
107631:
 Abalone
99727:
 Poker Hand
81987:
 Forest Fires
72315:
 Yeast
70491:
 Bag of Words
70412:
 Internet Advertisements
66047:
 SPECT Heart

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