preserve county and municipality boundaries as much as possible
preserve communities of interest as much as possible
Algorithmic Constraints
We enforce a maximum population deviation of 0.5%. We use a pseudo-county constraint described below which attempts to mimic the norms in Kentucky of generally preserving county, city, and township boundaries.
No manual pre-processing decisions were necessary.
Simulation Notes
We sample 8,000 districting plans for Kentucky across two independent runs of the SMC algorithm, and then thin the sample down to 5,000 plans.
We use a pseudo-county constraint to limit the county and municipality (i.e. city and township) splits. Municipality lines are used in Jefferson County, which has a population larger than the target population for a congressional district.
Redistricting requirements
In Kentucky, under the Criteria and Standards for Congressional Redistricting adopted by Interim Joint Committee on State Government’s Redistricting Subcommittee in 1991, districts must:
Algorithmic Constraints
We enforce a maximum population deviation of 0.5%. We use a pseudo-county constraint described below which attempts to mimic the norms in Kentucky of generally preserving county, city, and township boundaries.
Data Sources
Data for Kentucky comes from the ALARM Project's 2020 Redistricting Data Files.
Pre-processing Notes
No manual pre-processing decisions were necessary.
Simulation Notes
We sample 8,000 districting plans for Kentucky across two independent runs of the SMC algorithm, and then thin the sample down to 5,000 plans. We use a pseudo-county constraint to limit the county and municipality (i.e. city and township) splits. Municipality lines are used in Jefferson County, which has a population larger than the target population for a congressional district.
Validation
Checklist
TODO
lines from the template code have been removedenforce_style()
to format my coderedist_map
andredist_plans
objects, and summary statistics) have been edited@christopherkenny