https://blog.csdn.net/qq_16234613/article/details/79827006
scatter_(input, dim, index, src)将src中数据根据index中的索引按照dim的方向填进input中.
1 >>> x = torch.rand(2, 5) 2 >>> x 3 4 0.4319 0.6500 0.4080 0.8760 0.2355 5 0.2609 0.4711 0.8486 0.8573 0.1029 6 [torch.FloatTensor of size 2x5]