Hello, PPI experts,
We're running a gPPI analysis and are noticing something we can't
quite get our heads around: the PPI regressor weights from seed A to
target B are often quite different than those from seed B to target A.
In fact, if we run gPPIs for 20-odd seeds and generate the 20x20
correlation matrix among those seeds, then plot the A->B values from
the upper triangle against the B->A values from the lower triangle,
there is no significant statistical relationship between them.
Is this expected behavior? If so, how should we think about it?
Thanks much,
Todd
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