How do I randomly pick an element in each column of a matrix in MATLAB?

我随机选择一个元素如何在MATLAB矩阵的每一列吗？

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Table 4 describes the graph from Figure 11 in the form of a matrix where every column contains a different test case.

表4描述了图11中每列包含不同的测试用例。

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Note that for a DAG represented in Matrix, shifting position of entire row or entire column still makes the representation equivalent.

注意，一个DAG表示为矩阵，移位置的整行或整列仍然是等效的表示。

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