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1. 混合注意力机制设计

1.1 HybridAttention模块概述

HybridAttention模块是我们架构的核心创新点，它巧妙地将CNN的通道注意力和Transformer的空间注意力结合起来：

class HybridAttention(nn.Module):"""Hybrid Attention combining CNN and Transformer attention"""def __init__(self, channels, reduction_ratio=8, num_heads=8):super(HybridAttention, self).__init__()self.channels = channels# CNN attention branch (channel attention)self.cnn_attention = nn.Sequential(nn.AdaptiveAvgPool2d(1),nn.Conv2d(channels, channels // reduction_ratio, kernel_size=1),nn.ReLU(inplace=True),nn.Conv2d(channels // reduction_ratio, channels, kernel_size=1