As the datasets from all three databases are not openly accessible, the referencing of machine learning results to the same data is still a challenge for the work on IR data. The issue of missing datasets was temporarily solved in previous studies by using scrapper tools to get data from the above-mentioned online libraries. Nevertheless, generating datasets through web scraping frequently introduces challenges related to data inconsistency and ethical considerations. Additionally, if the underlying databases are commercial, disclosing the specific dataset is not possible.