Classification of real and bogus transients using active learning and semi-supervised learning Yating Liu, Lulu Fan, Lei Hu, Junqiang Lu, Yan Lu, Zelin Xu, Jiazheng Zhu, Haochen Wang and Xu Kong A&A, 693 (2025) A105 Published online: 09 January 2025 DOI: 10.1051/0004-6361/202348581