Stochastic dynamics in finite populations: Difference between revisions

From EvoLudo
No edit summary
No edit summary
Line 23: Line 23:
===Deterministic Dynamics===
===Deterministic Dynamics===
<div class="lab_description SDE">
<div class="lab_description SDE">
[[Image:RSP - ODE.svg|left|200px]]
[[Image:RSP - ODE.svg|left|200px|link=EvoLudoLab: Rock-Paper-Scissors - ODE]]
====[[EvoLudoLab: Rock-Paper-Scissors - ODE|Replicator dynamics]]====
====[[EvoLudoLab: Rock-Paper-Scissors - ODE|Replicator dynamics]]====
In the limit <math>N\to\infty</math> with <math>s=1.4</math> and without mutations, <math>\mu=0</math>, <math>\hat x</math> is an attractor of the replicator dynamics. The figure shows a sample trajectory that spirals towards the interior fixed point <math>\hat x</math>.
In the limit <math>N\to\infty</math> with <math>s=1.4</math> and without mutations, <math>\mu=0</math>, <math>\hat x</math> is an attractor of the replicator dynamics. The figure shows a sample trajectory that spirals towards the interior fixed point <math>\hat x</math>.
Line 30: Line 30:


<div class="lab_description SDE">
<div class="lab_description SDE">
[[Image:RSP - ODE Mutations.svg|left|200px]]
[[Image:RSP - ODE Mutations.svg|left|200px|link=EvoLudoLab: Rock-Paper-Scissors - ODE with Mutations]]
==== [[EvoLudoLab: Rock-Paper-Scissors - ODE with Mutations|Replicator-Mutator dynamics]]====
==== [[EvoLudoLab: Rock-Paper-Scissors - ODE with Mutations|Replicator-Mutator dynamics]]====
Including mutations in the replicator dynamics gives rise to the replicator-mutator dynamics. Mutations destabilizes the interior fixed point <math>\hat x</math> an can give rise to stable limit cycles. The image shows a sample trajectory for <math>\mu=0.002</math>.
Including mutations in the replicator dynamics gives rise to the replicator-mutator dynamics. Mutations destabilizes the interior fixed point <math>\hat x</math> an can give rise to stable limit cycles. The image shows a sample trajectory for <math>\mu=0.002</math>.
Line 38: Line 38:
===Stochastic Dynamics===
===Stochastic Dynamics===
<div class="lab_description SDE">
<div class="lab_description SDE">
[[Image:RSP - SDE.svg|left|200px]]
[[Image:RSP - SDE.svg|left|200px|link=EvoLudoLab: Rock-Paper-Scissors - SDE]]
==== [[EvoLudoLab: Rock-Paper-Scissors - SDE|Stochastic differential equations]]====
==== [[EvoLudoLab: Rock-Paper-Scissors - SDE|Stochastic differential equations]]====
{{-}}
{{-}}
Line 44: Line 44:


<div class="lab_description SDE">
<div class="lab_description SDE">
[[Image:RSP - SDE Mutations.svg|left|200px]]
[[Image:RSP - SDE Mutations.svg|left|200px|link=EvoLudoLab: Rock-Paper-Scissors - SDE with Mutations]]
==== [[EvoLudoLab: Rock-Paper-Scissors - SDE with Mutations|Stochastic differential equations, with mutations]]====
==== [[EvoLudoLab: Rock-Paper-Scissors - SDE with Mutations|Stochastic differential equations, with mutations]]====
{{-}}
{{-}}
Line 51: Line 51:
===Individual Based Simulations===
===Individual Based Simulations===
<div class="lab_description SDE">
<div class="lab_description SDE">
[[Image:RSP - IBS.svg|left|200px]]
[[Image:RSP - IBS.svg|left|200px|link=EvoLudoLab: Rock-Paper-Scissors - IBS]]
==== [[EvoLudoLab: Rock-Paper-Scissors - IBS|Individual based simulations]]====
==== [[EvoLudoLab: Rock-Paper-Scissors - IBS|Individual based simulations]]====
{{-}}
{{-}}
Line 57: Line 57:


<div class="lab_description SDE">
<div class="lab_description SDE">
[[Image:RSP - IBS Mutations.svg|left|200px]]
[[Image:RSP - IBS Mutations.svg|left|200px|link=EvoLudoLab: Rock-Paper-Scissors - IBS with Mutations]]
==== [[EvoLudoLab: Rock-Paper-Scissors - IBS with Mutations|Individual based simulations, with mutations]]====
==== [[EvoLudoLab: Rock-Paper-Scissors - IBS with Mutations|Individual based simulations, with mutations]]====
{{-}}
{{-}}