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pytorch loss = loss_func(output, label) 报错
阅读量:313 次
发布时间:2019-03-03

本文共 424 字,大约阅读时间需要 1 分钟。

在运行损失函数时 loss = loss_func(output, label) 时报了两个错 : 

 

1.

RuntimeError: Expected object of scalar type Long but got scalar type Float for argument #2 'target'

这是因为label必须是 LongTensor 类型, 之前是 :

label = t.tensor(float(image[1]))  # image[1]为str类型

改为 :

label = t.tensor(float(image[1])).long()

 

2. 

Assertion `cur_target >= 0 && cur_target < n_classes’ failed

这是因为我的数据集类别是从1开始,需要依次减一,所以要改为 :

label = t.tensor(float(image[1])-1).long()

 

 

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