hyper-parameters not same with paper

[leftthomas]

I find some hyper-parameters not same between code and paper Implementation Details:

SparseInst/configs/Base-SparseInst.yaml

Line 27 in fd6fb38

WEIGHT_DECAY: 0.05

WEIGHT_DECAY is set as 0.05 in the code, but the paper said 0.0001

SparseInst/sparseinst/config.py

Line 50 in fd6fb38

cfg.MODEL.SPARSE_INST.LOSS.MASK_PIXEL_WEIGHT = 5.0

PIXEL_WEIGHT is set as 5.0 in the code, but the paper said 2.0,
why these difference, which one is correct?
And I have noticed that in the section Main Results, the two hyper-parameters has been set to the same with code, but I don't know why WEIGHT_DECAY is so large.