biogeme.py

"""
File name : biogeme.py
Author :    Michel Bierlaire and Mamy Fetiarison
Date :      Fri May 15 14:23:51 2009
"""
from bio_expression import *
from bio_iterator import *
from bioMatrix import *


class STAN:
   CATEGORICAL = {}
   NORMAL = {}
   GAMMA = {}


class BIOGEME_OBJECT:
   
   ESTIMATE = None
   
   SIMULATE = None
   
   EXCLUDE = None
   
   WEIGHT = None
   
   VARCOVAR = None
   
   BAYESIAN = None
   
   STAN = STAN()
   
   FORMULAS = {}

   
   STATISTICS = {}
   
   CONSTRAINTS = {}
   
   DRAWS = {}

   
   PARAMETERS = {}
   
   def __init__(self) :
      # Only one object can be instantiate
      BIOGEME_OBJECT.__init__ = BIOGEME_OBJECT.__once__

   def __once__(self):
      print("No further BIOGEME_OBJECT instance can be created!")
      return


"""
Numeric constants
"""
one = Numeric(1)
zero = Numeric(0)