Can you explain config file param means?

[fanweiya]

loss_type: 'logit'   # logit or triplet
logits_scale: 64.0
logits_margin1: 1.0   # m1: sphereface should >= 1
logits_margin2: 0.2   # m2: cosineface should >= 0
logits_margin3: 0.3   # m3: arcface    should >= 0

center_loss_factor: 0.0  # center loss
center_alpha: 0.9   # center update rate

alpha: 0.2     # triplet margin

# run params
thresh: 0.2
below_fpr: 0.001        # fpr should below this