在执行：class MLP(torch.nn.Module): def __init__(self, weight_decay=0.01): super(MLP, self).__init__() self.fc1 = torch.nn.Linear(178, 100) self.relu = torch.nn.ReLU() self.fc2 = torch.nn.Linear(100, 50) self.fc3 = torch.nn.Linear(50, 5) self.dropout = torch.nn.Dropout(p=0.1) self.weight_decay = weight_decay def forward(self, x): x = self.fc1(x) x = self.relu(x) x = self.fc2(x) x = self.relu(x) x = self.fc3(x) return x def regularization_loss(self): reg_loss = torch.tensor(0.).to(device) for name, param in self.named_parameters(): if 'weight' in name: reg_loss += self.weight_decay * torch.norm(param) return reg_lossmodel = MLP() criterion = torch.nn.CrossEntropyLoss() optimizer = torch.optim.Adam(model.parameters(), lr=0.001) for epoch in range(num_epochs): for i, (inputs, labels) in enumerate(train_loader): optimizer.zero_grad() outputs = model(inputs.to(device)) loss = criterion(outputs, labels.to(device)) loss += model.regularization_loss() loss.backward() optimizer.step()如何将其中测试集的loss函数收敛

到最小值？

首先，需要检查训练集和测试集的loss值是否有明显的差距，如果有，则需要增加模型复杂度或者增加训练集的数量。其次，可以尝试调整learning rate、weight decay等超参数，使模型更容易收敛。另外，可以适当增加训练次数，同时检查是否存在过拟合的情况，控制模型的复杂度，以提高模型的泛化能力。最后，还可以尝试使用更高级的优化算法，如AdamW等。