Hi Again, On Aug 31, 2014, at 8:59 PM, Gerd Kortemeyer <korte...@msu.edu> wrote:
> > The problem may be 1e10 as upper limit - that’s awfully big. While I am > unable to verify this right now, I have a vague feeling that a 32-bit integer > is expected inside &random_permutation(), and that weird things could happen > with the overflows or “negatives.” Maybe try with 1e8 (which is smaller than > 2^31) and see if the bias goes away. I am not sure what “bias” is in this context means, but I just noticed that your array appears to have 10,000 elements, which means there are 10,000! different permutations. Of course 10,000! >> 1e10, so with the a random seed between 1 and 1e10, you’ll never “hit” all possible permutations - is that the “bias”? - Gerd. _______________________________________________ LON-CAPA-users mailing list LON-CAPA-users@mail.lon-capa.org http://mail.lon-capa.org/mailman/listinfo/lon-capa-users
