Multi-label class assignment in land-use modelling |
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Authors: | Hichem Omrani Fahed Abdallah Omar Charif Nicholas T Longford |
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Institution: | 1. Urban Development and Mobility Department, Luxembourg Institute of Socio-Economic Research - LISER, Esch-sur-Alzette, Luxembourghichem.omrani@liser.lu;3. Heudiasyc Laboratory, UMR CNRS 6599, Compiegne University of Technology, Compiegne, France;4. Department of Geomatics Engineering, University of Calgary, Calgary, Alberta, Canada;5. Statistics Research and Consulting, SNTL, Barcelona, Spain |
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Abstract: | During the last two decades, a variety of models have been applied to understand and predict changes in land use. These models assign a single-attribute label to each spatial unit at any particular time of the simulation. This is not realistic because mixed use of land is quite common. A more detailed classification allowing the modelling of mixed land use would be desirable for better understanding and interpreting the evolution of the use of land. A possible solution is the multi-label (ML) concept where each spatial unit can belong to multiple classes simultaneously. For example, a cluster of summer houses at a lake in a forested area should be classified as water, forest and residential (built-up). The ML concept was introduced recently, and it belongs to the machine learning field. In this article, the ML concept is introduced and applied in land-use modelling. As a novelty, we present a land-use change model that allows ML class assignment using the k nearest neighbour (kNN) method that derives a functional relationship between land use and a set of explanatory variables. A case study with a rich data-set from Luxembourg using biophysical data from aerial photography is described. The model achieves promising results based on the well-known ML evaluation criteria. The application described in this article highlights the value of the multi-label k nearest neighbour method (MLkNN) for land-use modelling. |
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Keywords: | land-use modelling multi-label machine learning geographic information systems |
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