Access to the repository
All datasets have been encoded using the ARFF format of the WEKA machine learning package. Each dataset contains ten pairs of training/test sets corresponding roughly to a 10-fold cross-validation partitioning process.You can download all datasets in compressed format here: all.tar.gz. The size of the tar file is ~4.3GB.
Datasets can be downloaded individually too. Here is a list of datasets sorted by number of attributes.
| #Attributes | Type of attributes | Type of prediction | #classes | Balanced classes | Data files |
| 1 | nominal | classification | 2 | no | Download |
| 1 | nominal | classification | 2 | yes | Download |
| 1 | nominal | classification | 3 | no | Download |
| 1 | nominal | classification | 3 | yes | Download |
| 1 | nominal | classification | 5 | no | Download |
| 1 | nominal | classification | 5 | yes | Download |
| 1 | nominal | regression | - | - | Download |
| 3 | nominal | classification | 2 | no | Download |
| 3 | nominal | classification | 2 | yes | Download |
| 3 | nominal | classification | 3 | no | Download |
| 3 | nominal | classification | 3 | yes | Download |
| 3 | nominal | classification | 5 | no | Download |
| 3 | nominal | classification | 5 | yes | Download |
| 3 | nominal | regression | - | - | Download |
| 5 | nominal | classification | 2 | no | Download |
| 5 | nominal | classification | 2 | yes | Download |
| 5 | nominal | classification | 3 | no | Download |
| 5 | nominal | classification | 3 | yes | Download |
| 5 | nominal | classification | 5 | no | Download |
| 5 | nominal | classification | 5 | yes | Download |
| 5 | nominal | regression | - | - | Download |
| 7 | nominal | classification | 2 | no | Download |
| 7 | nominal | classification | 2 | yes | Download |
| 7 | nominal | classification | 3 | no | Download |
| 7 | nominal | classification | 3 | yes | Download |
| 7 | nominal | classification | 5 | no | Download |
| 7 | nominal | classification | 5 | yes | Download |
| 7 | nominal | regression | - | - | Download |
| 9 | nominal | classification | 2 | no | Download |
| 9 | nominal | classification | 2 | yes | Download |
| 9 | nominal | classification | 3 | no | Download |
| 9 | nominal | classification | 3 | yes | Download |
| 9 | nominal | classification | 5 | no | Download |
| 9 | nominal | classification | 5 | yes | Download |
| 9 | nominal | regression | - | - | Download |
| 11 | nominal | classification | 2 | no | Download |
| 11 | nominal | classification | 2 | yes | Download |
| 11 | nominal | classification | 3 | no | Download |
| 11 | nominal | classification | 3 | yes | Download |
| 11 | nominal | classification | 5 | no | Download |
| 11 | nominal | classification | 5 | yes | Download |
| 11 | nominal | regression | - | - | Download |
| 13 | nominal | classification | 2 | no | Download |
| 13 | nominal | classification | 2 | yes | Download |
| 13 | nominal | classification | 3 | no | Download |
| 13 | nominal | classification | 3 | yes | Download |
| 13 | nominal | classification | 5 | no | Download |
| 13 | nominal | classification | 5 | yes | Download |
| 13 | nominal | regression | - | - | Download |
| 15 | nominal | classification | 2 | no | Download |
| 15 | nominal | classification | 2 | yes | Download |
| 15 | nominal | classification | 3 | no | Download |
| 15 | nominal | classification | 3 | yes | Download |
| 15 | nominal | classification | 5 | no | Download |
| 15 | nominal | classification | 5 | yes | Download |
| 15 | nominal | regression | - | - | Download |
| 17 | nominal | classification | 2 | no | Download |
| 17 | nominal | classification | 2 | yes | Download |
| 17 | nominal | classification | 3 | no | Download |
| 17 | nominal | classification | 3 | yes | Download |
| 17 | nominal | classification | 5 | no | Download |
| 17 | nominal | classification | 5 | yes | Download |
| 17 | nominal | regression | - | - | Download |
| 19 | nominal | classification | 2 | no | Download |
| 19 | nominal | classification | 2 | yes | Download |
| 19 | nominal | classification | 3 | no | Download |
| 19 | nominal | classification | 3 | yes | Download |
| 19 | nominal | classification | 5 | no | Download |
| 19 | nominal | classification | 5 | yes | Download |
| 19 | nominal | regression | - | - | Download |
| 20 | real-valued | classification | 2 | no | Download |
| 20 | real-valued | classification | 2 | yes | Download |
| 20 | real-valued | classification | 3 | no | Download |
| 20 | real-valued | classification | 3 | yes | Download |
| 20 | real-valued | classification | 5 | no | Download |
| 20 | real-valued | classification | 5 | yes | Download |
| 20 | real-valued | regression | - | - | Download |
| 60 | real-valued | classification | 2 | no | Download |
| 60 | real-valued | classification | 2 | yes | Download |
| 60 | real-valued | classification | 3 | no | Download |
| 60 | real-valued | classification | 3 | yes | Download |
| 60 | real-valued | classification | 5 | no | Download |
| 60 | real-valued | classification | 5 | yes | Download |
| 60 | real-valued | regression | - | - | Download |
| 100 | real-valued | classification | 2 | no | Download |
| 100 | real-valued | classification | 2 | yes | Download |
| 100 | real-valued | classification | 3 | no | Download |
| 100 | real-valued | classification | 3 | yes | Download |
| 100 | real-valued | classification | 5 | no | Download |
| 100 | real-valued | classification | 5 | yes | Download |
| 100 | real-valued | regression | - | - | Download |
| 140 | real-valued | classification | 2 | no | Download |
| 140 | real-valued | classification | 2 | yes | Download |
| 140 | real-valued | classification | 3 | no | Download |
| 140 | real-valued | classification | 3 | yes | Download |
| 140 | real-valued | classification | 5 | no | Download |
| 140 | real-valued | classification | 5 | yes | Download |
| 140 | real-valued | regression | - | - | Download |
| 180 | real-valued | classification | 2 | no | Download |
| 180 | real-valued | classification | 2 | yes | Download |
| 180 | real-valued | classification | 3 | no | Download |
| 180 | real-valued | classification | 3 | yes | Download |
| 180 | real-valued | classification | 5 | no | Download |
| 180 | real-valued | classification | 5 | yes | Download |
| 180 | real-valued | regression | - | - | Download |
| 220 | real-valued | classification | 2 | no | Download |
| 220 | real-valued | classification | 2 | yes | Download |
| 220 | real-valued | classification | 3 | no | Download |
| 220 | real-valued | classification | 3 | yes | Download |
| 220 | real-valued | classification | 5 | no | Download |
| 220 | real-valued | classification | 5 | yes | Download |
| 220 | real-valued | regression | - | - | Download |
| 260 | real-valued | classification | 2 | no | Download |
| 260 | real-valued | classification | 2 | yes | Download |
| 260 | real-valued | classification | 3 | no | Download |
| 260 | real-valued | classification | 3 | yes | Download |
| 260 | real-valued | classification | 5 | no | Download |
| 260 | real-valued | classification | 5 | yes | Download |
| 260 | real-valued | regression | - | - | Download |
| 300 | real-valued | classification | 2 | no | Download |
| 300 | real-valued | classification | 2 | yes | Download |
| 300 | real-valued | classification | 3 | no | Download |
| 300 | real-valued | classification | 3 | yes | Download |
| 300 | real-valued | classification | 5 | no | Download |
| 300 | real-valued | classification | 5 | yes | Download |
| 300 | real-valued | regression | - | - | Download |
| 340 | real-valued | classification | 2 | no | Download |
| 340 | real-valued | classification | 2 | yes | Download |
| 340 | real-valued | classification | 3 | no | Download |
| 340 | real-valued | classification | 3 | yes | Download |
| 340 | real-valued | classification | 5 | no | Download |
| 340 | real-valued | classification | 5 | yes | Download |
| 340 | real-valued | regression | - | - | Download |
| 380 | real-valued | classification | 2 | no | Download |
| 380 | real-valued | classification | 2 | yes | Download |
| 380 | real-valued | classification | 3 | no | Download |
| 380 | real-valued | classification | 3 | yes | Download |
| 380 | real-valued | classification | 5 | no | Download |
| 380 | real-valued | classification | 5 | yes | Download |
| 380 | real-valued | regression | - | - | Download |