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Remove zero initialization of to_attn_bias weights, since for these bias=False #302

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Oct 3, 2024
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Remove zero initialization of to_attn_bias weights, since for these bias=False #302

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5 changes: 1 addition & 4 deletions alphafold3_pytorch/alphafold3.py
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Expand Up @@ -767,11 +767,8 @@ def __init__(self, *, heads, dim_pairwise, window_size=None, num_memory_kv=0, **

# line 8 of Algorithm 24

to_attn_bias_linear = LinearNoBias(dim_pairwise, heads)
nn.init.zeros_(to_attn_bias_linear.weight)

self.to_attn_bias_norm = nn.LayerNorm(dim_pairwise)
self.to_attn_bias = nn.Sequential(to_attn_bias_linear, Rearrange("b ... h -> b h ..."))
self.to_attn_bias = nn.Sequential(LinearNoBias(dim_pairwise, heads), Rearrange("b ... h -> b h ..."))

@typecheck
def forward(
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