Package org.evoludo.simulator.models

Interface Model.HasDE

All Known Subinterfaces:

Model.HasDE.DPairs, Model.HasDE.EM, Model.HasDE.ODE, Model.HasDE.PDE, Model.HasDE.PDEADV, Model.HasDE.PDERD, Model.HasDE.RK5, Model.HasDE.SDE

All Known Implementing Classes:

ATBT, CDL, CDLP, CDLPQ, DemesTBT, EcoPGG, LV, Moran, Predator, RSP, simCDL, simCDLP, simCDLPQ, simMoran, simTBT, simTraits, SIR, TBT, Traits

Enclosing class:

Model

public static interface Model.HasDE

Methods that every Module must implement, which advertises numerical solutions based on differential equations.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	Model.HasDE.DGroups	Interface for differential equation models with interactions in groups of arbitrary size.
static interface	Model.HasDE.DPairs	Interface for differential equation models with pairwise interactions.
static interface	Model.HasDE.DualDynamics	Interface for modules that support differential equation models with both frequency and density based dynamics.
static interface	Model.HasDE.EM	Interface for ordinary differential equation models using the Euler-Maruyama method.
static interface	Model.HasDE.ODE	Interface for ordinary differential equation models; defaults to RK5.
static interface	Model.HasDE.PDE	Interface for partial differential equation models; defaults to PDERD.
static interface	Model.HasDE.PDEADV	Interface for reaction-diffusion-advection partial differential equation models.
static interface	Model.HasDE.PDERD	Interface for reaction-diffusion partial differential equation models.
static interface	Model.HasDE.RK5	Interface for ordinary differential equation models using the fifth order Runge-Kutta method.
static interface	Model.HasDE.SDE	Interface for stochastic differential equation models.

Method Summary

Modifier and Type	Method	Description
int	getDependent()	For replicator dynamics the frequencies of all traits must sum up to one.

Method Details

getDependent

int getDependent()

For replicator dynamics the frequencies of all traits must sum up to one. Hence, for nTraits traits there are only nTraits-1 degrees of freedom. The index returned by getDependent() marks the one rate of change that is derived from all the others.

Notes:

• Dependent traits are used by models where the frequencies of all types must sum up to one.
• Density modules do not have dependent traits and getDependent() should return -1.
• Currently differential equations implementations are only provided for Discrete modules.

Returns:

the index of the dependent trait (or -1 if there is none)