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. 2011 Oct 10;6(10):e25695. doi: 10.1371/journal.pone.0025695

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Paini et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Pictorial representation of how the virtual world was established and used to test SOM's ability to predict invasive species. (a) Characteristics assigned to regions and species (InI = invasibility index; IRI = invasion requirement index), (b) These characteristics used to determine which species can establish in which regions, (c) Species subsequently distributed to a predetermined proportion of the regions they could establish in (e.g. 50%), (d) This information analysed by SOM, and (e) SOM's predictions compared to the ‘truth’ (b).