def forward(self, data, edge_index):

这是一个神经网络模型中的 forward 方法，用于前向传播计算。其中，data 是输入数据，edge_index 是输入图的边列表。具体实现会根据具体的模型而异，但一般会涉及到对输入数据的一系列处理和变换，以及对图结构的建模和特征提取。最终的输出结果一般是一个预测值或者一组预测值，用于模型的评估或者应用。

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def forward(self, data, org_edge_index): x = data.clone().detach() edge_index_sets = self.edge_index_sets device = data.device batch_num, node_num, all_feature = x.shape x = x.view(-1, all_feature).contiguous() gcn_outs = [] for i, edge_index in enumerate(edge_index_sets): edge_num = edge_index.shape[1] cache_edge_index = self.cache_edge_index_sets[i] if cache_edge_index is None or cache_edge_index.shape[1] != edge_num*batch_num: self.cache_edge_index_sets[i] = get_batch_edge_index(edge_index, batch_num, node_num).to(device) batch_edge_index = self.cache_edge_index_sets[i] all_embeddings = self.embedding(torch.arange(node_num).to(device)) weights_arr = all_embeddings.detach().clone() all_embeddings = all_embeddings.repeat(batch_num, 1) weights = weights_arr.view(node_num, -1) cos_ji_mat = torch.matmul(weights, weights.T) normed_mat = torch.matmul(weights.norm(dim=-1).view(-1,1), weights.norm(dim=-1).view(1,-1)) cos_ji_mat = cos_ji_mat / normed_mat dim = weights.shape[-1] topk_num = self.topk topk_indices_ji = torch.topk(cos_ji_mat, topk_num, dim=-1)[1] self.learned_graph = topk_indices_ji gated_i = torch.arange(0, node_num).T.unsqueeze(1).repeat(1, topk_num).flatten().to(device).unsqueeze(0) gated_j = topk_indices_ji.flatten().unsqueeze(0) gated_edge_index = torch.cat((gated_j, gated_i), dim=0) batch_gated_edge_index = get_batch_edge_index(gated_edge_index, batch_num, node_num).to(device) gcn_out = self.gnn_layers[i](x, batch_gated_edge_index, node_num=node_num*batch_num, embedding=all_embeddings) gcn_outs.append(gcn_out) x = torch.cat(gcn_outs, dim=1) x = x.view(batch_num, node_num, -1) indexes = torch.arange(0,node_num).to(device) out = torch.mul(x, self.embedding(indexes)) out = out.permute(0,2,1) out = F.relu(self.bn_outlayer_in(out)) out = out.permute(0,2,1) out = self.dp(out) out = self.out_layer(out) out = out.view(-1, node_num) return out

这是一个PyTorch模型的前向传播函数，它接受两个参数：data和org_edge_index。该函数使用GCN（图卷积神经网络）来处理输入数据，并返回一个输出张量。具体实现细节可以参考代码中的注释。

下面这段代码的作用是什么def setup_model(self): self.enumerate_unique_labels_and_targets() self.model = CasSeqGCN(self.args, self.number_of_features + self.args.number_of_hand_features, self.number_of_nodes) #给当前类中模型主体进行初始化，初始化为上面的模型 def create_batches(self): N = len(self.graph_paths) train_start, valid_start, test_start = \ 0, int(N * self.args.train_ratio), int(N * (self.args.train_ratio + self.args.valid_ratio)) train_graph_paths = self.graph_paths[0:valid_start] valid_graph_paths = self.graph_paths[valid_start:test_start] test_graph_paths = self.graph_paths[test_start: N] self.train_batches, self.valid_batches, self.test_batches = [], [], [] for i in range(0, len(train_graph_paths), self.args.batch_size): self.train_batches.append(train_graph_paths[i:i+self.args.batch_size]) for j in range(0, len(valid_graph_paths), self.args.batch_size): self.valid_batches.append(valid_graph_paths[j:j+self.args.batch_size]) for k in range(0, len(test_graph_paths), self.args.batch_size): self.test_batches.append(test_graph_paths[k:k+self.args.batch_size]) def create_data_dictionary(self, edges, features): """ creating a data dictionary :param target: target vector :param edges: edge list tensor :param features: feature tensor :return: """ to_pass_forward = dict() to_pass_forward["edges"] = edges to_pass_forward["features"] = features return to_pass_forward def create_target(self, data): """ Target createn based on data dicionary. :param data: Data dictionary. :return: Target size """ return torch.tensor([data['activated_size']])

这段代码是一个类中的三个方法：

1. `setup_model`: 这个方法初始化了类中的模型，使用了一个叫做 `CasSeqGCN` 的模型，并将该模型保存在了当前类的 `model` 属性中。

2. `create_batches`: 这个方法将读入的数据集划分成了三部分（训练集、验证集、测试集），并将每一部分划分成多个 batch。这个方法返回了三个 batch 列表，分别对应训练集、验证集和测试集。

3. `create_data_dictionary` 和 `create_target`: 这两个方法用于将输入的边和特征数据转换成 PyTorch 可以处理的格式。其中 `create_target` 用于创建目标向量，其大小为 1 维，对应了数据字典中的 `activated_size`。