Creators

The model can be created using pre-defined creators in urbansim. The class
DevelopmentProjectLocationChoiceModelCreator sets useful default values for arguments of the constructor, run_config and estimate_config. The model is by default initialized with:

sampler

- ``opus_core.samplers.weighted_sampler''

utilities

- ``opus_core.linear_utilities''

probabilities

- ``opus_core.mnl_probabilities''

choices

- ``urbansim.first_agent_first_choices'' (see Section 8.5.2)

submodel_string

- ``size_capacity''

Entries of run_config are set as to:

{   "compute_capacity_flag": True,
    "sample_size_locations": 10,
    "correct_sampling_bias": False,
    "capacity_string": "urbansim.gridcell.is_developable_for_%s" % units }

The variable units in the last line is taken from a model configuration that is passed to the creator in an entry ``units'' of the corresponding project type (see model configuration on page ).

Entries of estimate_config are set as to:

{   "estimation": "opus_core.bhhh_mnl_estimation",
    "sample_size_locations": 10,
    "estimation_size_agents": 1.0,
    "correct_sampling_bias": False  }

DevelopmentProjectLocationChoiceModelCreator is used by

• DevelopmentProjectCommercialLocationChoiceModelCreator
• DevelopmentProjectIndustrialLocationChoiceModelCreator
• DevelopmentProjectResidentialLocationChoiceModelCreator

which set in addition the appropriate type of projects for which the model should run.