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  • 标题:A Minimum Cross-Entropy Approach to Disaggregate Agricultural Data at the Field Level
  • 本地全文:下载
  • 作者:Xavier, António ; Fragoso, Rui ; de Belém Costa Freitas, Maria
  • 期刊名称:Land
  • 印刷版ISSN:2073-445X
  • 出版年度:2018
  • 卷号:7
  • 期号:2
  • 页码:1-16
  • 出版社:MDPI, Open Access Journal
  • 摘要: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.
  • 关键词:data disaggregation; supervised classifications; classification algorithms; minimum cross-entropy; land uses; Algarve; empirical validation
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