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A minimum cross entropy model to generate disaggregated agricultural data at the local level


  • Xavier, Antonio
  • Martins, Maria de Belem Costa Freitas
  • Fragoso, Rui Manuel de Sousa


This work presents an entropy approach to disaggregate agricultural data at a local level. It comprises two different steps. In a first one, an information prior at disaggregated level based on experts’ opinions, available cartography of land use and biophysical data is created. In a second step, it’s used a minimum cross entropy process in order to manage these information inputs and to guaranty a solution compatible with all the different restrictions. The model was applied to the region of Algarve in the year of 1999, in order to disaggregate the data at the pixel and county level. Results show that the model was able to provide some satisfactory results since the estimated values obtained for the different areas revealed a good approximation to the true values. These results were then analyzed and provided a new insight about the policies’ consequences in the territory.

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  • Xavier, Antonio & Martins, Maria de Belem Costa Freitas & Fragoso, Rui Manuel de Sousa, 2011. "A minimum cross entropy model to generate disaggregated agricultural data at the local level," 122nd Seminar, February 17-18, 2011, Ancona, Italy 98991, European Association of Agricultural Economists.
  • Handle: RePEc:ags:eaa122:98991

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    References listed on IDEAS

    1. Macours, Karen & Swinnen, Johan F. M., 2000. "Causes of Output Decline in Economic Transition: The Case of Central and Eastern European Agriculture," Journal of Comparative Economics, Elsevier, vol. 28(1), pages 172-206, March.
    2. Csaba Csaki & Attila Jambor, 2010. "Five Years of Accession: Impacts on Agriculture in the NMS," EuroChoices, The Agricultural Economics Society, vol. 9(2), pages 10-17, August.
    3. Mantino, Francesco, 2010. "Understanding delivery mehanisms in EU rural development policies: an institutional approach," Working Papers 157976, National Institute of Agricultural Economics, Italy – INEA, Rural Development Policies.
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    More about this item


    Minimum cross entropy; data disaggregation; local level; Algarve; agricultural policies; Agricultural and Food Policy; C11; C81; Q15; R14;

    JEL classification:

    • C11 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Bayesian Analysis: General
    • C81 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - Methodology for Collecting, Estimating, and Organizing Microeconomic Data; Data Access
    • Q15 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Land Ownership and Tenure; Land Reform; Land Use; Irrigation; Agriculture and Environment
    • R14 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General Regional Economics - - - Land Use Patterns

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