Using the code, please cite: Wang J, Wang H, Nie F, et al. Ratio Sum versus Sum Ratio for Linear Discriminant Analysis[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 44(12), pp. 10171-10185, 2022.
https://ieeexplore.ieee.org/document/9640609
If you have any question, please contact wanghongmei@mail.nwpu.edu.cn