Python 如何知道与tfidf矩阵中的术语关联的类标签

我有TFIDF权重矩阵。矩阵如下所示：

(0, 11)   0.238317554822
(0, 34)   0.355850989305
(0, 7)    0.355850989305
(0, 21)   0.238317554822
(0, 16)   0.355850989305
(0, 35)   0.355850989305
(0, 8)    0.355850989305
(0, 17)   0.355850989305
(0, 36)   0.355850989305
(1, 11)   0.238317554822
(1, 21)   0.238317554822
(1, 23)   0.355850989305
(1, 0)    0.355850989305
(1, 24)   0.355850989305
(1, 12)   0.355850989305
(1, 22)   0.355850989305
(1, 25)   0.355850989305
(1, 13)   0.355850989305
(2, 2)    0.27430356415
(2, 18)   0.339992197465
(2, 26)   0.339992197465
(2, 39)   0.339992197465
(2, 3)    0.339992197465
(2, 19)   0.339992197465
(2, 27)   0.339992197465
(2, 4)    0.339992197465
(2, 20)   0.339992197465
(3, 2)    0.27430356415
(3, 40)   0.339992197465
(3, 9)    0.339992197465
(3, 1)    0.339992197465
(3, 5)    0.339992197465
(3, 41)   0.339992197465
(3, 10)   0.339992197465

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我如何为矩阵中的每个术语调用类标签

如何定义“类标签”？我想调用与每个术语关联的类。tf idf矩阵不执行分类。是的，我知道，我只是计算它以获得预定义分类文档的术语权重，我将在训练分类器时使用它，