These datasets are provided by the Center for Machine Learning and Intelligent Systems at the University of California, Irvine. It conprises a lots of kind different dataset, for all machine learning experiments.
Exemples of datasets interseting for robotic purpose :
Connectionist Bench (Sonar, Mines vs. Rocks) Data Set :The data set was contributed to the benchmark collection by Terry Sejnowski, now at the Salk Institute and the University of California at San Deigo. The data set was developed in collaboration with R. Paul Gorman of Allied-Signal Aerospace Technology Center.