Jyotirmayee Rautaray The DUC (Document Understanding Conference) datasets from 2002, 2004, and 2005 are no longer publicly available, but they can be acquired by contacting the National Institute of Standards and Technology (NIST) at https://www.nist.gov/. They may also be available through academic institutions or research groups that participated in the DUC review in the past.
It is important to note that DUC 2002,2004,2005 is no longer considered cutting-edge, and you should consider utilizing more current datasets for your study.
The datasets are not publicly available. But, you can still find some papers that used DUC dataset and they may share the link or some other resources to get the dataset. Also, you can find other datasets related to single document summarization, such as the CNN/DailyMail dataset and the Newsroom dataset. These datasets contain large amounts of news articles and their corresponding summaries.