Description of datasets for ncRNA classification.

(a) State-of-the-art datasets. (b) Datasets used in this study. Datasets are sorted by date. The number of instances and classes in each dataset is given. We also give the range of sequence lengths. The last column indicates how many times the dataset has been used by state-of-the-art ncRNA classifiers. For some datasets information on length range is not available (indicated with ‘n/a’) as it is not stated in the publication, and it cannot be computed as the dataset is not available.