Volume 5 Number 1
January 2008
Article Contents
Francisco Flórez-Revuelta, José Manuel Casado-Díaz and Lucas Martínez-Bernabeu. An Evolutionary Approach to the Delineation of Functional Areas Based on Travel-to-work Flows. International Journal of Automation and Computing, vol. 5, no. 1, pp. 10-21, 2008. doi: 10.1007/s11633-008-0010-6
Cite as: Francisco Flórez-Revuelta, José Manuel Casado-Díaz and Lucas Martínez-Bernabeu. An Evolutionary Approach to the Delineation of Functional Areas Based on Travel-to-work Flows. International Journal of Automation and Computing, vol. 5, no. 1, pp. 10-21, 2008. doi: 10.1007/s11633-008-0010-6

An Evolutionary Approach to the Delineation of Functional Areas Based on Travel-to-work Flows

  • Received: 2007-05-01
Fund Project:

This work was supported by Spanish National Plan of R+D+i from Spanish Ministry of Education and Science(Ministerio de Educacin y Ciencia)for the project Local Labour Markets:New Methods of Delineation and Analysis(No.8EJ2007-67767-C04-02);the European Social Fund(ESF)and the University of Alicante.

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An Evolutionary Approach to the Delineation of Functional Areas Based on Travel-to-work Flows

Fund Project:

This work was supported by Spanish National Plan of R+D+i from Spanish Ministry of Education and Science(Ministerio de Educacin y Ciencia)for the project Local Labour Markets:New Methods of Delineation and Analysis(No.8EJ2007-67767-C04-02);the European Social Fund(ESF)and the University of Alicante.

Abstract: This paper presents a new approach to the delineation of local labor markets based on evolutionary computation.The aim of the exercise is the division of a given territory into functional regions based on travel-to-work flows.Such regions are defined so that a high degree of inter-regional separation and of intra-regional integration in both cases in terms of commuting flows is guaranteed. Additional requirements include the absence of overlap between delineated regions and the exhaustive coverage of the whole territory. The procedure is based on the maximization of a fitness function that measures aggregate intra-region interaction under constraints of inter-region separation and minimum size.In the experimentation stage,two variations of the fitness function are used,and the process is also applied as a final stage for the optimization of the results from one of the most successful existing methods,which are used by the British authorities for the delineation of travel-to-work areas(TTWAs).The empirical exercise is conducted using real data for a sufficiently large territory that is considered to be representative given the density and variety of travel-to-work patterns that it embraces.The paper includes the quantitative comparison with alternative traditional methods,the assessment of the performance of the set of operators which has been specifically designed to handle the regionalization problem and the evaluation of the convergence process.The robustness of the solutions,something crucial in a research and policy-making context,is also discussed in the paper.

Francisco Flórez-Revuelta, José Manuel Casado-Díaz and Lucas Martínez-Bernabeu. An Evolutionary Approach to the Delineation of Functional Areas Based on Travel-to-work Flows. International Journal of Automation and Computing, vol. 5, no. 1, pp. 10-21, 2008. doi: 10.1007/s11633-008-0010-6
Citation: Francisco Flórez-Revuelta, José Manuel Casado-Díaz and Lucas Martínez-Bernabeu. An Evolutionary Approach to the Delineation of Functional Areas Based on Travel-to-work Flows. International Journal of Automation and Computing, vol. 5, no. 1, pp. 10-21, 2008. doi: 10.1007/s11633-008-0010-6
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