torch.nn.init.constant_(tensor, val)如何使用

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功能:使用val的值来填充输入的Tensor

代码实验展示:

Microsoft Windows [版本 10.0.18363.1256](c) 2019 Microsoft Corporation。保留所有权利。C:\Users\chenxuqi>conda activate ssd4pytorch2_2_0(ssd4pytorch2_2_0) C:\Users\chenxuqi>pythonPython 3.7.7 (default, May  6 2020, 11:45:54) [MSC v.1916 64 bit (AMD64)] :: Anaconda, Inc. on win32Type "help", "copyright", "credits" or "license" for more information.>>> import torch>>> import torch.nn as nn>>> w = torch.empty(3, 2)>>> wtensor([[1.0381e+23, 4.4141e-43],[1.0381e+23, 4.4141e-43],[1.0381e+23, 4.4141e-43]])>>> nn.init.constant_(w, 20200910.0)tensor([[20200910., 20200910.],[20200910., 20200910.],[20200910., 20200910.]])>>>>>>>>> weight = nn.Parameter(torch.Tensor(3))>>> weightParameter containing:tensor([0.0000e+00, 0.0000e+00, 2.9066e+38], requires_grad=True)>>>>>> nn.init.constant_(weight, 20200910.0)Parameter containing:tensor([20200910., 20200910., 20200910.], requires_grad=True)>>> weightParameter containing:tensor([20200910., 20200910., 20200910.], requires_grad=True)>>>>>>>>>

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