# Number of parameters = 4  Objective function value = 81.8471  Maximum gradient component = 1.85046e-05
# beta:
 -2.61536 -0.800516 0.691962
# log_theta1:
-1.52642767841
# u:
 -0.0458867903009 0.538778172249 0.861422020874 -1.01340802842 -0.361242849532 -0.486492349007 0.503277159526