Event Materials

Watch the event livestream here.

Event Summary

On Monday, the Open Source Policy Center at AEI hosted its June Policy Simulation Library (PSL) meeting. PSL is an open-source software library for public policy decision-making and organizes monthly meetings for open-source policy modelers to present their projects to users and the general public.

The event began with updates from AEI’s Derrick Choe and Anderson Frailey. Mr. Choe discussed his work on mapping the economic costs of the opioid crisis, and Mr. Frailey offered an overview of TaxBrain, an integrator package and web application for open-source tax models.

Then, Max Ghenis, founder of the UBI Center, presented his work on modeling the distributional economic impact of universal basic income (UBI) proposals and demoed microdf, a newly released Python package for advanced tax policy analysis and visualization. The presentation was followed by a lively Q&A on a range of topics, including uncertainty in the data, how to optimize UBI parameters, and Mr. Ghenis’ transition from tech to economic policy.

— Peter Metz

Event Description

Join us for the Policy Simulation Library (PSL) DC meeting hosted by AEI’s Open Source Policy Center to learn how computational simulation models are used to inform public policy decision-making.

After updates from PSL contributors and users, Max Ghenis will present and demo microdf, a newly released Python package for performing advanced tax policy analyses and visualizations with Tax-Calculator, an open-source microsimulation model of the US federal income and payroll tax system.

Everyone is welcome to the PSL DC meeting regardless of technical knowledge or experience, although please expect modeling code and results to be presented.

To learn more about PSL, visit and follow us on Twitter @PSLmodels.



12:00 PM
Registration and lunch

12:15 PM
Anderson Frailey, AEI

12:20 PM
Updates from open-source projects

12:30 PM
Max Ghenis, independent data scientist

1:15 PM

1:30 PM

Event Contact Information

For more information, please contact Anderson Frailey at [email protected], 202.419.5214.

Media Contact Information

For media inquiries or to register a camera crew, please contact [email protected], 202.862.5829

Speaker Biographies

Anderson Frailey is a research associate at the Open Source Policy Center at AEI. He has made substantial technical contributions to economic modeling projects including Tax Data and Tax-Calculator. Mr. Frailey also is a consultant for the World Bank, assisting India’s Ministry of Finance in developing a microsimulation tax model. His areas of research include tax policy and universal basic income. Mr. Frailey received a bachelor’s degree in economics from the University of Texas at Austin.

Max Ghenis is the founder of UBI Center, which conducts open-source research into universal basic income. He contributes to the Tax-Calculator software and is a consultant for the Synthetic Household Data project, both of which are incubated by the Open Source Policy Center at AEI. From 2010 to 2018, he was a data scientist at Google, where he most recently researched YouTube’s emerging markets products. Mr. Ghenis has a bachelor’s degree in operations research from the University of California, Berkeley, and is pursuing a master’s degree in applied economics from Johns Hopkins University.

Sort By:

Refine Content:



  • Event (3447)

Additional Keywords:

Refine Results
Refine Content