This paper discusses a tool for optimization of econometric models based on genetic algorithms. First, we briefly describe the concept of this optimization technique. Then, we explain the design of a specifically developed algorithm and apply it to a difficult econometric problem, the semiparametric estimation of a censored regression model. We carry out some Monte Carlo simulations and compare the genetic algorithm with another technique, the iterative linear programming algorithm, to run the censored least absolute deviation estimator. It turns out that both algorithms lead to similar results in this case, but that the proposed method is computationally more stable than its competitor.

Notice for interested researchers:
The genetic algorithm is programmed in STATA Version 7.0 as an ado-file. If you are interested in using it yourself, the genetic algorithm is available for download:
ftp://ftp.zew.de/pub/zew-docs/div/genetic.zip

If you encounter problems with the download, please do not hesitate to contact us by e-mail, either czarnitzki@zew.de or doherr@zew.de. We will send the ado-file and a simple example for running the genetic algorithm.

Schlagworte

Genetic Algorithm, Semiparametrics, Monte Carlo Simulation