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Adding Logsums
Ben Stabler edited this page Mar 18, 2017
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- will start by implementing just the work location choice model logsum needs to get our feet wet with a vectorized approach
- will create two new model steps and revise the existing step:
- workplace_location_sample - will use a similar expression file as today (but without the logsum expression), but will build a table of workers * all zones in order to select a sample of alternative work locations for the next model.
- workplace_location_logsums - will start with the workers * sampled alt zones table output above and will add home taz, alt taz, depart period (which is set to 8 am), end period (which is set to 5 pm), and will add a logsum column (see below)
- workplace_location - will start with the table output above and the existing expression file in order to choose a work location
- the mode choice model will be revised to add new capabilities to get logsums in addition to making choices. For example, mode.tour_mode_choice_simulate adds a choice mode column to the choosers table (tour). We need a method to add a logsum column to the choosers table (tour) as well. #164