Fixed error in calculation of BHHH approximation to Fisher Information Matrix. I was not taking the outer product of the scores for each individual. I was taking the outer product of the gradient of the log-likelihood with respect to each available alternative for each person.
Fixed error in calculation of BHHH approximation to Fisher Information Matrix. I was not taking the outer product of the scores for each individual. I was taking the outer product of the gradient of the log-likelihood with respect to each available alternative for each person.

timothyb0912/pylogit