Theano/Theano — pull request #1410 by ebuchman (2013-06-12 07:50:53+00:00)
Title: added scipy.stats.chi2.sf op

Have yet to implement a gradient routine. Also, some of the functions used to calculate the survival function are worthy of ops on their own, maybe (ie. incomplete gamma function, regularized gamma function, the chi2 cdf). I can do this soon. Was not sure how to properly implement testing routines, but I did some basic testing myself and things seem legit.