This paper characterizes optimal monetary policy in a canonical heterogeneous-agent New
Keynesian (HANK) model with wage rigidity. Under discretion, a utilitarian planner faces the …

Solving dynamic economic models that capture salient real-world heterogeneity and non-
linearity requires the approximation of high-dimensional functions. As their dimensionality …

This paper studies monetary and fiscal policy transmission in a multi-sector heterogeneous-
agent New Keynesian model with an input-output network (“HANK-IO”). We document …

Budget allocation of marketplace levers, such as incentives for drivers and promotions for
riders, has long been a technical and business challenge at Uber; understanding lever …

We propose a pseudospectral method to solve heterogeneous-agent models in continuous
time. The solution is approximated as a sum of smooth global basis functions, in our case …

This paper proposes a new approach to numerically solving a wide class of heterogeneous
agent models in continuous time using adaptive sparse grids. I combine the sparse finite …