baseline_gaussian.py 文件源码

def gaussian_nll(x, mu, log_sigma):
    sigma_squared = T.exp(2*log_sigma)
    return (
        lib.floatX(0.5*numpy.log(2*numpy.pi)) + 
        (2*log_sigma) + 
        ( ((x-mu)**2) / (2*sigma_squared) )
    )