natstrat-package: natstrat: Obtain Unweighted Natural Strata that Balance Many...

In natstrat: Obtain Unweighted Natural Strata that Balance Many Covariates

Description

Natural strata fix a constant ratio of controls to treated units within each stratum. This ratio need not be an integer. The control units are chosen using randomized rounding of a linear program that balances many covariates. To solve the linear program, the 'Gurobi' commercial optimization software is recommended, but not required. The 'gurobi' R package can be installed following the instructions here.

Details

To achieve the desired ratio of control to treated units, a subset of control units are chosen using by optimizing the balance of many covariates using either randomized rounding of a linear program or an integer program. The main function in this package is optimize_controls(). To create the input constraints for this function, you should use generate_constraints().

Author(s)

Maintainer: Katherine Brumberg [e-mail]

See Also

Useful links:

• https://github.com/kkbrum/natstrat

• https://kkbrum.github.io/natstrat/

• https://www.gurobi.com/documentation/9.1/refman/ins_the_r_package.html

• Report bugs at https://github.com/kkbrum/natstrat/issues

natstrat documentation built on Oct. 15, 2021, 5:12 p.m.