A minimum cross entropy approach to disaggregate agricultural data at the field level

Agricultural policies have impacts on land use, the economy, and the environment and their analysis requires disaggregated data at the local level with geographical references. Thus, this study proposes a model for disaggregating agricultural data, which develops a supervised classification of satel...

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Bibliographic Details
Main Author: Xavier, Antonio (author)
Other Authors: Fragoso, Rui (author), Costa Freitas, M. B. (author), Rosario, Maria do Socorro (author), Valente, Florentino (author)
Format: article
Language:eng
Published: 2018
Subjects:
Online Access:http://hdl.handle.net/10400.1/11512
Country:Portugal
Oai:oai:sapientia.ualg.pt:10400.1/11512
Description
Summary:Agricultural policies have impacts on land use, the economy, and the environment and their analysis requires disaggregated data at the local level with geographical references. Thus, this study proposes a model for disaggregating agricultural data, which develops a supervised classification of satellite images by using a survey and empirical knowledge. To ensure the consistency with multiple sources of information, a minimum cross-entropy process was used. The proposed model was applied using two supervised classification algorithms and a more informative set of biophysical information. The results were validated and analyzed by considering various sources of information, showing that an entropy approach combined with supervised classifications may provide a reliable data disaggregation.