PyTorch 求取梯度并实现一元线性回归

numpy和tensor相互转化并求取梯度 *numpy和tensor相互转化 tensor为张量，张量指多维矩阵 import torch import numpy as np from torch.autograd import Variable a=torch.Tensor([[2,3],[4,8],[7,9]]) b_=torch.LongTensor([[2,3],[4,8],[7,9

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