Template:EvoLudoLab:EcoPGG

Along the bottom of the applet there are several buttons to control the execution and the speed of the simulations - for details see the EvoLudo GUI documentation. Of particular importance are the parameters button and the data views pop-up list along the top. The former opens a panel that allows to set and change various parameters concerning the game as well as the population structure, while the latter displays the simulation data in different ways.

Color code:	Cooperators	Defectors

Payoff code:	Low High

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	Data views
Structure - strategy	Snapshot of the spatial arrangement of strategies.
Mean strategy	Time evolution of the strategy frequencies.
Simplex \(S_3\)	Strategy frequencies plotted in the simplex \(S_3\). If no calculation is running, mouse clicks set the initial frequencies of strategies and stops the calculations otherwise (for the ODE solver it switches to backwards integration).
Phase plane 2D	Frequencies plotted in the phase plane spanned by the population density (\(u + v = 1 - w\)) and the relative frequency of cooperators (\(f = u / (u + v)\)). Again, mouse clicks set the initial frequencies of strategies, stop the simulations or switch to backward integration
Structure - fitness	Snapshot of the spatial distribution of payoffs.
Mean fitness	Time evolution of average population payoff bounded by the minimum and maximum individual payoff.
Fitness histogram	Snapshot of payoff distribution in population.

Game parameters

The list below describes only the parameters related to the public goods game and the population dynamics. Follow the link for a complete list and descriptions of all other parameters such as spatial arrangements or update rules on the player and population level.

Interest

multiplication factor \(r\) of public good.

Cost

cost of cooperation \(c\) (investment into common pool).

Lone cooperator's payoff

payoff for a cooperator if no one else joins the public goods interaction.

Lone defector's payoff

payoff for a defector if no one else joins the public goods interaction.

Base birthrate

baseline reproductive rate of all individuals. The effective birthrate is affected by the individual's performance in the public goods game and additionally depends on the availability of empty space.

Deathrate

constant death rate of all individuals.

Init Coop, init defect, init empty

initial densities of cooperators, defectors and empty space. If they do not add up to 100%, the values will be scaled accordingly.