On Mon, Feb 22, 2010 at 12:34 PM, Raul Miller <[email protected]> wrote: > X=: ? 5 5$0 > Y=: ? 5 5 $0 > E=:(+/%#)@, > E ((-E)X) * ((-E)Y) > _0.0339656 > E ((-E)X) +/ .* ((-E)Y) > 0.00833635 > > But I do not have the background to assign any meaningful > concepts to these results. > > That said, I do have a question that might (or might not) > help me: What do you have in mind for the expected > values in the multi-dimensional case you have described? > (Are you working with any dependencies?)
For example, here is a somewhat plasible "matrix expected value" expression. (I do not know if there are any contexts where it means anything useful): E2=: E"0&:(E"1) |: $E2 ((-E2)X) * ((-E2)Y) 5 5 $E2 ((-E2)X) +/ .* ((-E2)Y) 5 5 -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
