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on Computational Economics |
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Issue of 2006‒04‒01
six papers chosen by |
| By: | Stinstra,Erwin; Rennen,Gijs; Teeuwen,Geert (Tilburg University, Center for Economic Research) |
| Abstract: | The subject of this paper is a new approach to Symbolic Regression. Other publications on Symbolic Regression use Genetic Programming. This paper describes an alternative method based on Pareto Simulated Annealing. Our method is based on linear regression for the estimation of constants. Interval arithmetic is applied to ensure the consistency of a model. In order to prevent over-fitting, we merit a model not only on predictions in the data points, but also on the complexity of a model. For the complexity we introduce a new measure. We compare our new method with the Kriging meta-model and against a Symbolic Regression meta-model based on Genetic Programming. We conclude that Pareto Simulated Annealing based Symbolic Regression is very competitive compared to the other meta-model approaches |
| Keywords: | approximation;meta-modeling;pareto simulated annealing;symbolic regression |
| JEL: | C14 |
| Date: | 2006 |
| URL: | http://d.repec.org/n?u=RePEc:dgr:kubcen:200615&r=cmp |
| By: | Marilena Locatelli; Steinar Strøm |
| Abstract: | In this paper we describe a software instrument, implemented with GAUSS, to evaluate a tax reform in terms of change in household welfare, and in particular in term of Compensating Variation (CV), within a random utility model. The program flow and the program list with comments are supplied. |
| Keywords: | Compensating variation, computing welfare change, GAUSS application, tax system evaluation |
| JEL: | C63 B21 |
| Date: | 2006–01 |
| URL: | http://d.repec.org/n?u=RePEc:wpc:wplist:wp02_06&r=cmp |
| By: | Richard Pierse (University of Surrey) |
| Abstract: | In this paper we propose an algorithm for the solution of optimal control problems with nonlinear models based on a generalised Gauss- Newton algorithm but making use of analytic model derivatives. The method is implemented in WinSolve, a general nonlinear model solu- tion program. |
| Date: | 2006–03 |
| URL: | http://d.repec.org/n?u=RePEc:sur:surrec:0906&r=cmp |
| By: | Richard Pierse (University of Surrey) |
| Abstract: | In this paper we show how the popular L-B-J algorithm for solving forward-looking economic models using Newton methods can be gen- eralised to allow for a block of terminal equations for variables that appear with a lead. The e¤ect of choosing di¤erent types of termi- nal condition is explored in a simple stochastic growth model using WinSolve, a general nonlinear model solution package. |
| Date: | 2006–03 |
| URL: | http://d.repec.org/n?u=RePEc:sur:surrec:1006&r=cmp |
| By: | Husslage,Bart; Rennen,Gijs; Dam,Edwin R. van; Hertog,Dick den (Tilburg University, Center for Economic Research) |
| Abstract: | In the area of computer simulation Latin hypercube designs play an important role. In this paper the class of maximin Latin hypercube designs is considered. Up to now only several two-dimensional designs and designs for some small number of points are known for this class. Using periodic designs and simulated annealing we extend the known results and construct approximate maximin Latin hypercube designs for up to ten dimensions and for up to 100 design points. All these designs can be downloaded from the website http://www.spacefillingdesigns.nl |
| Keywords: | computer experiment;Latin hypercube design;non-collapsing;packing problem; simulated annealing;space-filling |
| JEL: | C90 |
| Date: | 2006 |
| URL: | http://d.repec.org/n?u=RePEc:dgr:kubcen:200618&r=cmp |
| By: | John K. Dagsvik; Marilena Locatelli; Steinar Strøm |
| Abstract: | A female labor supplied model including sectoral choice, estimated on data from Norway, 1994 has been used in simulation to yield labor supply elasticities. We find that these elasticities are declining with the wage level of the women. The overall elasticities are rather small, but these small elasticities shadow for much stronger sectoral responses. A wage increase gives the women an incentive to shift labor supply from the public to the private sector. This occurs despite the fact that education and experiences have a slightly higher return in the public than in the private sector. The reasons for our result are that in the private sector wages are more dispersed and hours are less regulated. Marginal tax rates were cut considerably in the 1992 tax reform. We find that the impact on overall labor supply is rather modest, but again these modest changes shadow for stronger sectoral changes. The tax reform stimulated the women to shift their labor from the public to the private sector and to work longer hours. A calculation of the expected value of changes in household welfare shows that the richest households benefited far more from the 1992 tax reform than the poorest household. |
| Keywords: | Labor supply, married females, structural model, sectoral choice, wage ealsticities, evaluation of tax reforms |
| JEL: | J22 C51 |
| Date: | 2006–01 |
| URL: | http://d.repec.org/n?u=RePEc:wpc:wplist:wp01_06&r=cmp |