tensor补充

矩阵*运算

import torch
b = torch.arange(0,5000).unsqueeze(-1)
'''
tensor([[   0],
        [   1],
        [   2],
        ...,
        [4997],
        [4998],
        [4999]])
'''
a = torch.arange(0,128,2)
'''
tensor([  0,   2,   4,   6,   8,  10,  12,  14,  16,  18,  20,  22,  24,  26,
         28,  30,  32,  34,  36,  38,  40,  42,  44,  46,  48,  50,  52,  54,
         56,  58,  60,  62,  64,  66,  68,  70,  72,  74,  76,  78,  80,  82,
         84,  86,  88,  90,  92,  94,  96,  98, 100, 102, 104, 106, 108, 110,
        112, 114, 116, 118, 120, 122, 124, 126])
'''

c = b * a

'''
tensor([[     0,      0,      0,  ...,      0,      0,      0],
        [     0,      2,      4,  ...,    122,    124,    126],
        [     0,      4,      8,  ...,    244,    248,    252],
        ...,
        [     0,   9994,  19988,  ..., 609634, 619628, 629622],
        [     0,   9996,  19992,  ..., 609756, 619752, 629748],
        [     0,   9998,  19996,  ..., 609878, 619876, 629874]])
'''
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