7 papers · 1 filter
Treatment Effects with Correlated Spillovers: Bridging Discrete and Continuous Methods
Tatsuru Kikuchi
This paper develops a continuous functional framework for treatment effects propagating through geographic space and economic networks. We derive a master equation from three indep…
Dynamic Spatial Treatment Effects as Continuous Functionals: Theory and Evidence from Healthcare Access
Tatsuru Kikuchi
I develop a continuous functional framework for spatial treatment effects grounded in Navier-Stokes partial differential equations. Rather than discrete treatment parameters, the f…
Dynamic Spatial Treatment Effect Boundaries: A Continuous Functional Framework from Navier-Stokes Equations
Tatsuru Kikuchi
I develop a comprehensive theoretical framework for dynamic spatial treatment effect boundaries using continuous functional definitions grounded in Navier-Stokes partial differenti…
Nonparametric Identification of Spatial Treatment Effect Boundaries: Evidence from Bank Branch Consolidation
Tatsuru Kikuchi
I develop a nonparametric framework for identifying spatial boundaries of treatment effects without imposing parametric functional form restrictions. The method employs local linea…
Nonparametric Identification and Estimation of Spatial Treatment Effect Boundaries: Evidence from 42 Million Pollution Observations
Tatsuru Kikuchi
This paper develops a nonparametric framework for identifying and estimating spatial boundaries of treatment effects in settings with geographic spillovers. While atmospheric dispe…
Spatial and Temporal Boundaries in Difference-in-Differences: A Framework from Navier-Stokes Equation
Tatsuru Kikuchi
This paper develops a unified framework for identifying spatial and temporal boundaries of treatment effects in difference-in-differences designs. Starting from fundamental fluid d…
A Unified Framework for Spatial and Temporal Treatment Effect Boundaries: Theory and Identification
Tatsuru Kikuchi
This paper develops a unified theoretical framework for detecting and estimating boundaries in treatment effects across both spatial and temporal dimensions. We formalize the conce…