AMDO is outlined in [1] and is optimized for multi-class imbalanced datasets. The MDO algorithm seems a bit easier to implement so maybe that could be attempted first.
References
[1] https://www.researchgate.net/publication/320343439_AMDO_an_Over-Sampling_Technique_for_Multi-Class_Imbalanced_Problems
AMDO is outlined in [1] and is optimized for multi-class imbalanced datasets. The MDO algorithm seems a bit easier to implement so maybe that could be attempted first.
References
[1] https://www.researchgate.net/publication/320343439_AMDO_an_Over-Sampling_Technique_for_Multi-Class_Imbalanced_Problems