tensor矩阵计算余弦相似度

计算tensor矩阵内每行之间的余弦相似度可以使用以下方法。首先，通过对每行进行方差归一化，即除以各自的模，可以得到归一化后的矩阵a。然后，通过计算归一化后的矩阵a与其转置的乘积，即torch.mm(a, a.T)，可以得到余弦相似度矩阵similarity。这个矩阵的每个元素表示两行之间的余弦相似度。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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