Please use this identifier to cite or link to this item: http://hdl.handle.net/10174/6080

Title: Generate disaggregated soil allocation data using a minimum cross entropy model
Authors: Fragoso, R.
Martins, M.B
Lucas, M.R.
Keywords: Montado ecosystem
Cross Entropy
Maximum Entropy
incomplete information
Issue Date: 2008
Publisher: WSEAS
Citation: Fragoso, R., M.B. Martins, M.R.V. Lucas (2008), "Generate disaggregated soil allocation data using a minimum cross entropy model", WSEAS Transaction on Environment and Development, 9(4), 756-766.
Abstract: Montado ecosystem in the Alentejo Region, south of Portugal, has enormous agro-ecological and economics heterogeneities. A definition of homogeneous sub-units among this heterogeneous ecosystem was made, but for them is disposal only partial statistical information about soil allocation agro-forestry activities. The paper proposal is to recover the unknown soil allocation at each homogeneous sub-unit, disaggregating a complete data set for the Montado ecosystem area using incomplete information at sub-units level. The methodological framework is based on a Generalized Maximum Entropy approach, which is developed in thee steps concerning the specification of a r order Markov process, the estimates of aggregate transition probabilities and the disaggregation data to recover the unknown soil allocation at each homogeneous sub-units. The results quality is evaluated using the predicted absolute deviation (PAD) and the “Disagegation Information Gain” (DIG) and shows very acceptable estimation errors.
URI: http://hdl.handle.net/10174/6080
Type: article
Appears in Collections:GES - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
MED - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
CEFAGE - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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