# Questions tagged [computation]

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### Most common programs used by Economists

I recently asked a professor if he was planning on hiring a research assistant for next semester. I thought I'd be a pretty good candidate since I have decent experience using STATA, SAS, SPSS, R ...
1k views

### Can Dynare solve general equilibrium (GE) models with non-convex adjustment costs?

I know that Dynare (which sits on top of Matlab) can solve many kinds of dynamic stochastic general equilibrium (DSGE) and overlapping generations (OLG) models. I also know that Dynare can handle some ...
302 views

### Solving Kaplan and Menzio: Shopping Time

Kaplan and Menzio's shopping time model is a search&matching unemployment model where we, for a steady state equilibrium, need to determine to variables: $J$: Value of a worker $u$: unemployment ...
1k views

### Transition Matrix: Discrete -> Continuous Time

I have the code corresponding to Tauchen (1986) (Python equivalent of this), which generates a discrete approximation of a discrete time AR(1) process. For example, if you set up grid size as 3, it ...
282 views

### Is there always a pure Nash equilibrium in a resource selection game?

Denote $[r]\triangleq\{1,2,\ldots,r\}$. Consider a game with $n$ players, $[n]$, each has $m$ strategies, $[m]$. Each player $i$ has an associated payoff function, which considers only his selected ...
827 views

### Simulating a Hamilton-Jacobi-Bellman

Say I have solved an HJB of the form: $\rho V(k) = \max_c g(c) + V'(k)(z - c)$ I have calibrated $\rho$ to monthly parameters. I would like to simulate the development of $k$. I start with $k(0)$. ...
189 views

### Splittet Value Function and Hamilton-Jacobi-Bellman equation

General Problem Let $k\in\mathbb{R}_+$ be the state variable, $k=k^*$ a fixed point (saddle) and $v(k)$ a value function. The problem is, that the value function has two distinct functional forms, ...
234 views

### Computational economics

What exactly is computational economics? For example, does certain software for calculating/predicting/visualizing cost of manufacture falls under computational economics?
950 views

### Where do computational economists work

Does anybody know what kind of work or where computational economists end up working? It seems most end up in research...
42 views

### Solving Rational Expectation Models Linear vs. Nonlinear

Since I am coding some linear New Keynesian models in python and solving them under rational expectations (using the method of undetermined coefficients/linear time iteration), I was wondering whether ...
1k views

### Create simple graphs without functional forms

I am looking for a suggestion of programs that can be used to illustrate effects like the income/substitution effect with regards to the consumption choice etc. With many programs, need you to ...
116 views

### Could markets compute equilibria?

It has been shown, for example in the papers Deng, Du, The Computation of Approximate Competitive Equilibrium is PPAD-hard Hirsch, Papadimitriou, Vavasis, Exponential Lower Bounds for Finding Brouwer ...
42 views

### Stable marriage problem with transferable utilities

I'm looking for a package or a code (preferably in R) that finds the solution to the stable marriage problem with transferable utilities (Shapley and Shubik 1971). Specifically, I'm looking for one or ...
140 views

### How to make unequally spaced grid?

I want to make a grid [0,1] with 100 points but I want points to be concentrated at the edges close to 0 and 1. So I want 60-70% of the points to be in the intervals [0, 0.2] and [0.8, 1]. Any ideas ...
712 views

### What resources are available for learning Dynare?

What resources are available for learning Dynare? I think it'd be nice to put together a list of resources that available to those new to Dynare. I've had a little experience with it but it'd be nice ...
239 views

### Computing pure strategy Nash equilibria in finite games

I am trying to compute the (pure strategy) Nash equilibria of some discrete auctions. More precisely, let us define the strategy of each player as a function mapping from every valuation that they ...
905 views

### Matlab code example for piecewise linear approximation and Euler Equation Iteration

Where I can find a good Matlab sample code that performs Euler equation iteration with piece-wise linear approximation of policy functions? The Projection method I have in mind is something like ...
295 views

### How to approximate stochastic volatility model with finite-state Markov chain?

A common practice when computing solutions to stochastic dynamic optimization problems is to approximate an exogenous forcing process $z_{t+1} = \rho z_t + \sigma \epsilon_{t+1}$ with a finite-state ...
59 views

### Algorithmic game theory and decentralized exchange of information

An intresting topic that I want to understad has to do with the decentralized exchange of information among a network of agents, however there is not a specific theory to make such a mathematical ...
108 views

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### Statistical Learning and Econometrics

The principal goal of Econometrics is to find causal effects between economic variables. But the growing technology level seems to show us that Big Data and Statistical Learning result in a tradeoff ...
95 views

### Simulating the economy - is it an active field of research?

The question revolves around another motivating question: How does economics become more effective at predicting the behavior of the macro economy? For example, how does economics develop methods that ...
307 views

### Book recommendation: agent based modeling?

Is there a book along these criteria? introductory discuss both theory and writing program focus on social science (economics / politics / sociology) There are bunch of tutorials on the Internet, ...
158 views

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### Optimal Tax Rates on BGP

I was going through this paper by Aghion et al. I wanted some clarification on some of the computations. I understood the process uptil the normalization on page 22. Then we can get some policy rules ...
19 views

### Multi-dimensional interpolation routine that preserves shape AND differentiability

I am looking at two-dimensional gridded data from a kinked function, but need to make it smooth. Is there a two-dimensional version of the Schumaker-routine? I would also greatly appreciate pointers ...
392 views

### Which economic game theory model is most similar to poker?

Propeties the model should have: Well motivated: the game is actually is a plausible model of a real world situation. Maybe with some parameters learnt from data. Complete: it is a complete game ...
17 views

### What are macro-economics simulations horizons and limits possible with exascale computing?

What are typical examples in literature of large scale simulations of macro-economies of our time as of 2019 and what will change with the introduction of exascale computing? In terms, are there ...
34 views

### Macroeconomic model or knowledge base representing connected industries in the world

I'm looking for data (model, Expert system, knowledge base) that describes how different industries and countries interact with each other. And the nature of the relationship between them. An example ...
16 views

### Tauchen Hussey Process in Words

I've encountered the Tauchen-Hussey Process for discretizing an AR(1) a few times in homework, but never with an in-depth explanation as to what it actually does or how it works ... just "here's ...