List of dissimilarity functions
Abstract
The methods in this page are from Koleff et al. (2003); when called on the output of betadiversity, they will return a (dis)similarity score.
In the original paper (Koleff et al., 2003), the measures are expressed as a function of $a$ (the number of shared elements), $b$ (the number of elements unique to the right/neighbouring set), and $c$ (the number of elements unique to the left/focal set). In this documentation, we use a slightly different convention, where $c = L$ (left), $a = S$ (shared), and $b = R$ (right).
List of measures
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SpeciesInteractionNetworks.KGL01 — Function.
KGL01(S::T) where {T<:NamedTuple}
$\beta_w = \frac{L+S+R}{(2S + L + R)/2}$
References
Southwood and Henderson (2009)
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SpeciesInteractionNetworks.KGL02 — Function.
KGL02(S::T) where {T<:NamedTuple}
$\beta_{-1} = \frac{L+S+R}{(2S + L + R)/2}-1$
References
Harrison, Ross and Lawton (1992)
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SpeciesInteractionNetworks.KGL03 — Function.
KGL03(S::T) where {T<:NamedTuple}
$\beta_{c} = \frac{L+R}{2}$
References
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SpeciesInteractionNetworks.KGL08 — Function.
KGL08(S::T) where {T<:NamedTuple}
$\beta_t = \frac{L+R}{(2S + L + R)}$
This method is used in Poisot (2022), and has a lot of desirable properties. We suggest its use as a default.
References