trophic_incoherence_parameter¶
- trophic_incoherence_parameter(G, weight='weight', cannibalism=False)[source]¶
Compute the trophic incoherence parameter of a graph.
Trophic coherence is defined as the homogeneity of the distribution of trophic distances: the more similar, the more coherent. This is measured by the standard deviation of the trophic differences and referred to as the trophic incoherence parameter \(q\) by [1].
- Parameters
- GDiGraph
A directed networkx graph
- cannibalism: Boolean
If set to False, self edges are not considered in the calculation
- Returns
- trophic_incoherence_parameterfloat
The trophic coherence of a graph
References
- 1
Samuel Johnson, Virginia Dominguez-Garcia, Luca Donetti, Miguel A. Munoz (2014) PNAS “Trophic coherence determines food-web stability”