torch.argmax(label_count, dim=1)

This code will return the index of the maximum value in each row of the tensor "label_count".

For example, if "label_count" is a tensor of shape (3, 5), where each row represents the count of a label in a dataset of 5 classes, the code will return a tensor of shape (3,) containing the index of the most frequent label in each row.

Note that "dim=1" specifies that the operation is performed along the second axis (columns) of the tensor.

相关问题

torch.argmax(pred, dim=1)

这个问题可以回答。torch.argmax(pred, dim=1)是一个PyTorch函数，用于在给定维度上返回张量中最大值的索引。具体来说，它会返回一个张量，其中每个元素都是在给定维度上最大值的索引。

def test(): with torch.no_grad(): for data in valid_loader: val_label, val_input = data val_input = val_input.to(torch.float32) val_input, val_label = val_input.to(device), val_label.to(device) val_pred = model.forward(x=val_input) _, predicted = torch.max(val_pred, dim=1) # 找到出现次数最多的元素的索引 most_common_index = torch.argmax(torch.bincount(val_pred)) # 获取出现次数最多的值 most_common_value = val_pred[most_common_index] return most_common_value.item() #return predicted if __name__ == '__main__': #startTime = time.time() model.load_state_dict(torch.load('model.pth')) recognize = test() #endTime = time.time() #print("GPU耗时： ", endTime - startTime) print(recognize) 出现“"bincount_cpu" not implemented for 'Float'” 怎么修改

`"bincount_cpu" not implemented for 'Float'`错误是因为`torch.bincount()`函数只能用于整数类型的张量，而不能用于浮点数类型的张量。在你的代码中，`val_pred`是一个浮点数类型的张量。

要解决这个问题，你可以将`val_pred`张量转换为整数类型。你可以使用`torch.argmax()`函数找到`val_pred`中出现次数最多的元素的索引，然后使用该索引从`val_pred`中获取对应的值。下面是修改后的代码：

import torch

def test():
    with torch.no_grad():
        for data in valid_loader:
            val_label, val_input = data
            val_input = val_input.to(torch.float32)
            val_input, val_label = val_input.to(device), val_label.to(device)

            val_pred = model.forward(x=val_input)
            _, predicted = torch.max(val_pred, dim=1)

            # 找到出现次数最多的元素的索引
            most_common_index = torch.argmax(torch.bincount(predicted.int()))

            # 获取出现次数最多的值
            most_common_value = predicted[most_common_index]

    return most_common_value.item()

if __name__ == '__main__':
    model.load_state_dict(torch.load('model.pth'))
    recognize = test()
    print(recognize)

在修改后的代码中，我们将`predicted`张量转换为整数类型（`predicted.int()`），然后使用它来计算出现次数最多的元素。这样，你就可以避免`"bincount_cpu" not implemented for 'Float'`错误，并成功获取出现次数最多的值。

请注意，如果`predicted`张量包含浮点数，你可能需要在使用`torch.argmax()`之前将其转换为整数类型。