| 1 | The spatial package contains basic functionality for implementing spatially |
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| 2 | embedded (or so-called "fine-grained parallel") population models. In these |
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| 3 | models each subpopulation has its individuals spread out in some notional |
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| 4 | space (such as a grid), and breeding is accomplished by selecting an |
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| 5 | individual, picking a sufficiently fit "neighbor" of that individual, breeding |
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| 6 | the two, and replacing the original individual with the resulting child. The |
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| 7 | definition of the space and the notion of neighborhood is up to the particular |
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| 8 | space being used. The 'Space' interface defines the necessary functions |
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| 9 | for creating a subpopulation embedded with some space of your choosing. |
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| 10 | Use the SpatialTournamentSelection selection method to select individuals |
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| 11 | in your breeding pipeline, and a spatial Breeder. Classes of interest: |
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| 12 | |
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| 13 | |
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| 14 | |
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| 15 | ec.spatial.Space |
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| 16 | |
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| 17 | An interface which includes methods necessary to embed notions of |
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| 18 | some kind of space into a subpopulation. |
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| 19 | |
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| 20 | |
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| 21 | ec.spatial.Spatial1DSubpopulation |
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| 22 | |
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| 23 | A basic Subpopulation which implements Space to define a 1-dimensional |
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| 24 | toroidal space (that is, a ring). |
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| 25 | |
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| 26 | |
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| 27 | ec.spatial.SpatialTournamentSelection |
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| 28 | |
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| 29 | A variation of Tournament Selection which only picks neighbors of the current |
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| 30 | individual as entrants into the tournament. |
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| 31 | |
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| 32 | |
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| 33 | ec.spatial.SpatialBreeder |
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| 34 | |
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| 35 | A version of Breeder which, working with SpatialTournamentSelection, |
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| 36 | iteratively walks through the subpopulation and breeds new individuals to |
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| 37 | replace each slot in the subpopulation while adhering to the Space constraints. |
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| 38 | |
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| 39 | |
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| 40 | ec.spatial.SpatialMultiPopCoevolutionaryEvaluator |
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| 41 | |
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| 42 | A multi-population coevolutionary evaluator (similar to |
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| 43 | ec.coevolve.MultiPopCoevolutionaryEvaluator) which additionally can select |
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| 44 | one of the partners of a given individual(s) to be the individual in the exact |
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| 45 | same slot in the other subpopulation(s). |
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| 46 | |
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| 47 | |
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