T. von Neumann, C. Boeddeker, K. Kinoshita, M. Delcroix, and R. Haeb-Umbach, “On Word Error Rate Definitions and Their Efficient Computation for Multi-Speaker Speech Recognition Systems,”10.1109/icassp49357.2023.10094784__2023, doi:10.1109/icassp49357.2023.10094784 .