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    Configuring the neighbourhood effect in irregular cellular automata based models

    Barreira-González, P. and Barros, Joana (2016) Configuring the neighbourhood effect in irregular cellular automata based models. International Journal of Geographical Information Science 31 (3), pp. 617-636. ISSN 1365-8816.

    IJGIS Paper - complete version with cover and figures.pdf - Author's Accepted Manuscript

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    Cellular automata (CA) models have been widely employed to simulate urban growth and land use change. In order to represent urban space more realistically, new approaches to CA models have explored the use of vector data instead of traditional regular grids. However, the use of irregular CA-based models brings new challenges as well as opportunities. The most strongly affected factor when using an irregular space is neighbourhood. Although neighbourhood definition in an irregular environment has been reported in the literature, the question of how to model the neighbourhood effect remains largely unexplored. In order to shed light on this question, this paper proposed the use of spatial metrics to characterise and measure the neighbourhood effect in irregular CA-based models. These metrics, originally developed for raster environments, namely the enrichment factor and the neighbourhood index, were adapted and applied in the irregular space employed by the model. Using the results of these metrics, distance-decay functions were calculated to reproduce the push-and-pull effect between the simulated land uses. The outcomes of a total of 55 simulations (five sets of different distance functions and eleven different neighbourhood definition distances) were compared with observed changes in the study area during the calibration period. Our results demonstrate that the proposed methodology improves the outcomes of the urban growth simulation model tested and could be applied to other irregular CA-based models.


    Item Type: Article
    Additional Information: This is an Accepted Manuscript of an article published by Taylor & Francis, available online at the link above.
    Keyword(s) / Subject(s): Irregular space, neighbourhood, cellular automata, modelling, simulation
    School: School of Social Sciences, History and Philosophy > Department of Geography
    Depositing User: Joana Barros
    Date Deposited: 22 Sep 2016 09:52
    Last Modified: 11 Jun 2021 17:59


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