def __init__()

in vits.py [0:0]

• 19 lines of code
• 6 McCabe index (conditional complexity)

    def __init__(self, stop_grad_conv1=False, **kwargs):
        super().__init__(**kwargs)
        # Use fixed 2D sin-cos position embedding
        self.build_2d_sincos_position_embedding()

        # weight initialization
        for name, m in self.named_modules():
            if isinstance(m, nn.Linear):
                if 'qkv' in name:
                    # treat the weights of Q, K, V separately
                    val = math.sqrt(6. / float(m.weight.shape[0] // 3 + m.weight.shape[1]))
                    nn.init.uniform_(m.weight, -val, val)
                else:
                    nn.init.xavier_uniform_(m.weight)
                nn.init.zeros_(m.bias)
        nn.init.normal_(self.cls_token, std=1e-6)

        if isinstance(self.patch_embed, PatchEmbed):
            # xavier_uniform initialization
            val = math.sqrt(6. / float(3 * reduce(mul, self.patch_embed.patch_size, 1) + self.embed_dim))
            nn.init.uniform_(self.patch_embed.proj.weight, -val, val)
            nn.init.zeros_(self.patch_embed.proj.bias)

            if stop_grad_conv1:
                self.patch_embed.proj.weight.requires_grad = False
                self.patch_embed.proj.bias.requires_grad = False