23 Jul
2010
23 Jul
'10
4:15 p.m.
I will try to perform the implementation myself using the updated hypergeometric.
Has anyone pointers to efficient algorithm for two-sided 2x2 Fisher exact (or Barnard) test, able to deal with mix of small and large cell counts ( 0 and ~ 10,000) ? Large cell counts are typically a problem for the classical factorial version.
Our hypergeometric implementation will cope with the large factorials OK, but you're correct that it may be slow for N > 170. John.