- MEDLINE dataset: 1250x22095 sparse matrices with 5 clusters in sparse representation of column index, row index, and value. The five clusters start from (1 251 501 751 1001) row training data, test data
- REUTERS dataset in sparse representation using column index, row index, and value. training data, test data. The matrix size and starting position of each cluster are summerized in training data category, test data category