The UrbanSim models are configured through user specified variables and coefficients. The coefficients should be estimated separately for each region to be modeled by UrbanSim. The art and science of estimating the coefficients is a matter for a series of college courses so this description assumes that appropriate variables for each model have been chosen, and the appropriate coefficients have been estimated for those variables.
Each of the regression models and Logit models have two associated
tables: a table to store the specification of what variables to use
for that model, and a table to store the estimated coefficients to
use for those variables. The names of these tables are composed by
appending either _coefficients or _specification to
the model name. The tables for the land price model, for instance,
are land_price_model_coefficients and
land_price_model_specification.
All coefficient tables share the same schema, as do all specification tables. The schemas are: