choice_alternatives     Define choice alternatives
choice_covariates       Define choice covariates
choice_data             Define choice data
choice_effects          Define choice model effects
choice_formula          Define choice model formula
choice_identifiers      Define choice identifiers
choice_likelihood       Define and compute choice likelihood
choice_parameters       Define choice model parameters
choice_preferences      Define choice preferences
choice_probabilities    Define choice probabilities
choice_responses        Define choice response
choiceprob_logit        Calculate logit choice probabilities
choiceprob_probit       Calculate probit choice probabilities
compute_P               Number of model effects
train_choice            Stated Preferences for Train Traveling
travel_mode_choice      Revealed Preferences for Travel Mode Choice
