How to find 'within group correlation'?

2020 7 月 26
1 回答
2020 7 月 27 に更新
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I am new to matlab and I'm working on a problem with training data X and target data t. The target t is either 1 or 0 denoting which class the rows of X belong to. X is a 179x2 matrix, and I'm supposed to find the "within group correlation" between two variables x1 and x2 for each class. Can anyone explain how to do this? The professor's notes don't mention this at all

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回答 (1 件)

Jeff Miller
Jeff Miller 2020 年 7 月 27 日

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I would guess the idea is this:
grp0 = t == 0;
grp1 = t == 1;
corr(x(grp0,:))
corr(x(grp1,:))

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Alexis Fiddemon
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