This paper develops a dynamic general equilibrium model with heterogeneous firms that face search complementarities in the formation of vendor contracts. Search complementarities amplify small differences in productivity among firms. Market concentration fosters monopsony power in the labor...

Computing equilibria in dynamic stochastic economies is still a technically difficult task. Economists are aware of the so-call curse of dimensionality and the limits placed on the ability to solve high-dimensional dynamic models. Many of the economic models subjected to the curse of...

This paper proposes a novel finite-state Markov chain approximation method for Markov processes with continuous support. The method can be used for both uni- and multivariate processes, as well as non-stationary processes such as those with a life-cycle component. The method is based on...

Extreme natural hazards represent, together with crises and wars, the most disruptive phenomena for economic activity. Their economic impact has been shown to be remarkable, long-lasting, and growing over time, though the exact mechanisms at stake are challenging to isolate and quantify. As...

This paper discusses issues related to GPU for Economic problems. It highlights new methodologies and resources that are available for solving and estimating economic models and emphasizes situations when they are useful and others where they are impractical. Two examples illustrate the...

To help first- or second-year graduate students in economics apply their theoretical training, this paper shows how to solve a simple and intuitive computable general equilibrium (CGE) model using a calculator. Because this simplified Harberger model uses Cobb Douglas functional forms for...

We consider the derivatives pricing problem in credit risk. By assessing a market price to the hedged risks and a Capital Asset Pricing Model price to the unhedged part, we derive a generalized pricing formula that nests both the classic “Capital Markets” and “Corporate Finance” models....

We introduce the market resources method (MRM) for solving dynamic optimization problems. MRM extends Carroll's (2006) endogenous grid point method (EGM) for problems with more than one control variable using policy function iteration. The MRM algorithm is simple to implement and provides...

The theoretical literature presumes generational risk is large enough to merit study and that such risk can be meaningfully shared via appropriate government policies. This paper assesses these propositions. It develops a computational technique to overcome the curse of dimensionality and...

This paper examines the properties of taxes applied in the road links of a polycentric network and their interaction with a spatially-invariant tax on labor income. With the use of a theoretical model, the total welfare change from a revenue-neutral swap between the tax in an arbitrary road link...