Re:The Omnigenic Model as Metaphor for Life
by andrewprock on Friday September 14, 2018 @11:33PM
(#17992853)
If by "interaction term" it is meant f(a,b), then I congratulate the author of that tautology.
Re:The Omnigenic Model as Metaphor for Life
by whatshisface on Saturday September 15, 2018 @06:27PM
(#17996325)
Hidden in the parent's comment is the additional condition that f(a,b) have an expected value of zero. It's still pretty easy to prove, though.
In this case the system is contained entirely within the interaction term, and since you don't know the distributions of a and b there's not much motivation to go further. If you had the distributions of a and b you might be able to do something a little less trivial by skewing the interaction term to have an expected value of zero, potentially like:
a/b = a + b + (a/b - a - b) = f(a) + f(b) + (interaction term with E[term] = 0)