xautodl/lib/layers/mlp.py

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2021-03-04 06:42:52 +01:00
import torch.nn as nn
from typing import Optional
class MLP(nn.Module):
# MLP: FC -> Activation -> Drop -> FC -> Drop
def __init__(self, in_features, hidden_features: Optional[int] = None,
out_features: Optional[int] = None,
act_layer=nn.GELU,
drop: Optional[float] = None):
super(MLP, self).__init__()
out_features = out_features or in_features
hidden_features = hidden_features or in_features
self.fc1 = nn.Linear(in_features, hidden_features)
self.act = act_layer()
self.fc2 = nn.Linear(hidden_features, out_features)
self.drop = nn.Dropout(drop or 0)
def forward(self, x):
x = self.fc1(x)
x = self.act(x)
x = self.drop(x)
x = self.fc2(x)
x = self.drop(x)
return x