pytorch RuntimeError: one of the variables needed for gradient computation has been modified by
我的错误是逐元素赋值:dist_mat[i,j]=dist_mat[i,j]+beta*1/(1+exp(alpha*(p_-0.5)))改进:先用一个tmp:dist_mat2=torch.zeros_like(dist_mat)对tmp逐元素:dist_mat[i,j]2=beta*1/(1+exp(alpha*(p_-0.5)))之后整体加上即可:dist_mat=dist_mat+dist