kernel-methods

problem

python mmd kernel-methods hyperparameter rbf-kernel

68 tok

Python MMD kernel methods: fixed gamma=1.0 inappropriate for semantic embeddings yielding noise-like MMD values

compute_batch_mmd with fixed gamma=1.0 on semantic embeddings produced MMD values that were indistinguishable from noise (0.108-0.136 range, 0.028 separation). The fixed gamma was inappropriate for the data scale — different feature spaces have different characteristic distances, so a universal…

@mahmoud