Question

我是机器学习的新手。我学会了从youtube教程中编写此代码，但始终收到此错误

[HttpPost]
public async Task<IActionResult> SendGroup([FromBody]NotificationCriteria criteria)
{
    List<NotificationRecipient> recipients = (await userSvc.GetNotificationGroup(
                                              criteria.Section, criteria.Subsection)).ToList();

    if (!recipients.Any())
    {
        return BadRequest();
    }

    var uro = Url;
    var sectionUrl = Url.Action("Index", "ReportHome", new {sectionId = criteria.Section}, Request.Scheme);
    var profileUrl = Url.Action("Index", "Profile", null, Request.Scheme);
    var detail = new NotificationDetail
    {
        SectionUrl = sectionUrl,
        ProfileUrl = profileUrl,
        Recipients = recipients
    };
    try
    {
        await notificationSvc.SendGroupNotification(detail);
    }
    catch 
    {
        return StatusCode(500);
    }

    return Ok();
}

这是Net类

int get_profit(int* a, int i, int j) {

if (i == j)
    return a[i];
if (j == i + 1)
    return fmax(a[i], a[j]);

int profit1 = a[i] + fmin(get_profit(a, i + 2, j), get_profit(a, i + 1, j - 1)); // pick left number
int profit2 = a[j] + fmin(get_profit(a, i + 1, j - 1), get_profit(a, i, j - 2)); // pick right number

//if it's better to pick the left number, return the profit from the left number
//else, return the profit from the right number
return fmax(profit1, profit2);

这是功能训练

Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "/Applications/PyCharm.app/Contents/plugins/python/helpers/pydev/_pydev_bundle/pydev_umd.py", line 197, in runfile
    pydev_imports.execfile(filename, global_vars, local_vars)  # execute the script
  File "/Applications/PyCharm.app/Contents/plugins/python/helpers/pydev/_pydev_imps/_pydev_execfile.py", line 18, in execfile
    exec(compile(contents+"\n", file, 'exec'), glob, loc)
  File "/Users/aniket/Desktop/DeepLearning/PythonLearningPyCharm/CatVsDogs.py", line 109, in <module>
    optimizer = optim.Adam(net.parameters(), lr=0.001) # tweaks the weights from what I understand
AttributeError: 'Net' object has no attribute 'parameters'

优化器和损失函数以及数据

class Net():
    def __init__(self):
        super().__init__()
        self.conv1 = nn.Conv2d(1,32,5)
        self.conv2 = nn.Conv2d(32,64,5)
        self.conv3 = nn.Conv2d(64,128,5)
        self.to_linear = None
        x = torch.randn(50,50).view(-1,1,50,50)
        self.Conv2d_Linear_Link(x)
        self.fc1 = nn.Linear(self.to_linear, 512)
        self.fc2 = nn.Linear(512, 2)

    def Conv2d_Linear_Link(self , x):
        x = F.max_pool2d(F.relu(self.conv1(x)),(2,2))
        x = F.max_pool2d(F.relu(self.conv2(x)),(2,2))
        x = F.max_pool2d(F.relu(self.conv3(x)),(2,2))

        if self.to_linear is None :
            self.to_linear = x[0].shape[0]*x[0].shape[1]*x[0].shape[2]
        return x

    def forward(self, x):
        x = self.Conv2d_Linear_Link(x)
        x = F.relu(self.fc1(x))
        x = self.fc2(x)
        return F.softmax(x, dim=1)

Answer 1

您没有继承nn.Module。它应该看起来像这样：

class Net(nn.Module):
    def __init__(self):
        super().__init__()

这使您的网络可以继承nn.Module类的所有属性，例如parameters属性。

Answer 2

您可能遇到拼写问题，应该查看带有哪些参数的Net。

“净”对象没有属性“参数”

2 个答案: