4 papers
Exact Inference in Fixed-Effect Regressions with Concentrated Identifying Variation
Stanisław M. S. Halkiewicz
In fixed-effect regressions with many groups, fixed effects can absorb most identifying variation, leaving a handful of observations to carry what remains. When variation is this c…
Variance Estimation for Saturated Fixed-Effect Specifications
Stanisław M. S. Halkiewicz
We characterize the asymptotic behavior of conventional variance estimators in linear regression with high-dimensional fixed effects under a drift in which both the proportional fi…
The Omniscient, yet Lazy, Investor
Stanisław M. S. Halkiewicz
We formalize the paradox of an omniscient yet lazy investor - a perfectly informed agent who trades infrequently due to execution or computational frictions. Starting from a determ…
NA-DiD: Extending Difference-in-Differences with Capabilities
Stanisław M. S. Halkiewicz
This paper introduces the Non-Additive Difference-in-Differences (NA-DiD) framework, which extends classical DiD by incorporating non-additive measures the Choquet integral for eff…