5.4 模型建立(裤架把GCN封装起来了,使用体验和CNN一样) class GCN(torch.nn.Module): def __init__(self,feature, hidden, classes): super(GCN, self).__init__() self.conv1 = GCNConv(feature, hidden) self.conv2 = GCNConv(hidden, classes) def forward(self, features, edges): features = ...
4.2 头文件(21年9月建议使用python3.6版本,3.8,3.9目前不支持框架) importtorchimportnumpyasnpimportscipy.sparseasspimporttorch.nn.functionalasFfromtorch_geometric.nnimportGCNConv,GATConv,SAGEConvfromtorch_geometric.datasetsimportPlanetoid https://download.pytorch.org/whl/torch_stable.html如果安装不成功,请手动...
from torch_geometric.nn import GATConv, GraphConv, TopKPooling class CustomeModel(torch.nn.Module): def __init__(self): super(CustomeModel, self).__init__() self.gcn_layer = GraphConv(512, 256) def forward(self, x1, x2): x, edge_index = x1, x2 x = self.gcn_layer(x, edge...
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不难看到,GraphSAGE就是将邻居的特征进行聚合,然后经过线性变换,再加上节点自身特征的线性变换,就是节点最终的嵌入。「相比于GCN,节点特征和邻域特征使用了不同的参数矩阵,大大加强了模型的表达能力」。 init函数 具体实现主要是仿照PyG的官方代码: classMySAGEConv(MessagePassing):def__init__(self,in_channels:Uni...
Hello, I am trying to install the pytorch_geometric on my computer which doesn't have GPU. When I try to run: !pip3 install torch-scatter !pip3 install torch-sparse !pip3 install torch-cluster !pip3 install torch-spine-conv !pip3 install...
When I manually compiled torch-spline-conv: r: invalid static_cast from type ‘const torch::OrderedDict<std::basic_string, std::shared_ptrtorch::nn::Module >’ to type ‘torch::OrderedDict<std::basic_string, std::shared_ptrtorch::nn::Module >&’ error: command '/usr/local/cuda-11.3/...
GraphSAGE和GCN相比,引入了对邻居节点进行了随机采样,这使得邻居节点的特征聚合有了泛化的能力,可以在一些未知节点上的图进行学习顶点的embedding,而GCN是在一个确定的图中去学习顶点的embedding。 1 图的基本概念(不清楚可以先看这篇GCN文章) Aurora:【图卷积网络(GCN)】新手指南 | 10分钟入门 | Pytorch代码 | t...