for paper:Scalable Softmax Loss for Face Verification
prototxt/
face_train_test_1.prototxt --------------------->trained with softmax loss on webface
face_train_test_2.prototxt --------------------->trained with scalable softmax loss on webface
face_train_test-2.prototxt ----------------------->trained with softmax loss on cleaned msceleb dataset
face_train_test_3_1.prototxt ----------------------->trained with scalable softmax loss on cleaned msceleb dataset
ps: if you want get the value of learned \alpha, you could read the trained caffemdel to text format.