Table of Contents

Location Choice

There are three models that deal with location choice in GTAModel V4, Market, Other, and Work-Based-Business. You can find documentation on the location choice here. The modules are located within model system at Scheduler/Location Choice Model.

Each model will contain a list of modules called Time Period allowing you to specify the calibration factors to each time period individually. Each time period will provide you two list of modules called ODConstants and PDConstant. Starting with the simpler of the models PDConstant modules provides you a spacial dummy variable.

Parameter Description
Constant The constant to add to the utility of zones contained within the planning district range.
PDRange The range of planning districts to apply the constant to.

Only the first PDConstant that matches a will be applied. These parameters are able to be precomputed reducing its impact on runtime performance.

ODConstants are the second type of calibration module available for location choice. It allows for the additional flexibility of choosing, where the previous activity was, where the current activity is, and where the next activity will be.

Parameter Description
Constant The constant to add to the utility of zones contained within the planning district range.
Interest PD Range The range of planning districts where the episode will be located.
Next PD Range The range of planning districts where the next episode must have been located.
Previous PD Range The range of planning districts where the previous episode must have been located.