A weak evolutionarily stable strategy (WESS) is a more broad form of evolutionarily stable strategy (ESS). Like ESS, a WESS is able to defend against an invading "mutant" strategy. This means the WESS cannot be entirely eliminated from the population. The definition of WESS is similar to ESS. Any strategy s is a weakly evolutionarily stable strategy (WESS) if for any strategy s*≠s: (i) u(s, s) > u(s*, s) or (ii) u(s, s) = u(s*, s) and u(s, s*) ≥ u(s*, s*). One example of WESS, in a prisoner's dilemma, is Tit-for-tat (a strategy that cooperates in the first interaction and then reciprocates the other player's action from the previous turn in all other iterations). (Wikipedia).
Game theory (3), more complicated strategies and equilibria.
This video elaborates on the concept of stable strategies and evolutionary equilibria to include polymorphisms of pure strategies and the evolution of mixed strategies such as phenotypic plasticity.
From playlist TAMU: Bio 312 - Evolution | CosmoLearning Biology
11. Evolutionary stability: cooperation, mutation, and equilibrium
Game Theory (ECON 159) We discuss evolution and game theory, and introduce the concept of evolutionary stability. We ask what kinds of strategies are evolutionarily stable, and how this idea from biology relates to concepts from economics like domination and Nash equilibrium. The informal
From playlist Game Theory with Ben Polak
12. Evolutionary stability: social convention, aggression, and cycles
Game Theory (ECON 159) We apply the idea of evolutionary stability to consider the evolution of social conventions. Then we consider games that involve aggressive (Hawk) and passive (Dove) strategies, finding that sometimes, evolutionary populations are mixed. We discuss how such games ca
From playlist Game Theory with Ben Polak
Game theory (2), the hawk:dove model.
This video examines the hawk:dove model and uses it to discuss the evolution of stable strategies. How this perspective leading us to understand the relative universality of stable sex ratios is discussed.
From playlist TAMU: Bio 312 - Evolution | CosmoLearning Biology
Nash Equilibriums // How to use Game Theory to render your opponents indifferent
Check out Brilliant ► https://brilliant.org/TreforBazett/ Join for free and the first 200 subscribers get 20% off an annual premium subscription. Thank you to Brilliant for sponsoring this playlist on Game Theory. Game Theory Playlist ► https://www.youtube.com/playlist?list=PLHXZ9OQGMqx
From playlist Game Theory
Eva Kisdi : Evolutionary branching: Trade-offs and magic traits
Abstract: Adaptive dynamics has shaped our understanding of evolution by demonstrating that, via the process of evolutionary branching, ecological interactions can promote diversification. The classical approach to study the adaptive dynamics of a system is to specify the ecological model
From playlist Mathematics in Science & Technology
Stability Analysis, State Space - 3D visualization
Introduction to Stability and to State Space. Visualization of why real components of all eigenvalues must be negative for a system to be stable. My Patreon page is at https://www.patreon.com/EugeneK
From playlist Physics
Evolutionary game theory by Matteo Marsili
Winter School on Quantitative Systems Biology DATE:04 December 2017 to 22 December 2017 VENUE:Ramanujan Lecture Hall, ICTS, Bengaluru The International Centre for Theoretical Sciences (ICTS) and the Abdus Salam International Centre for Theoretical Physics (ICTP), are organizing a Winter S
From playlist Winter School on Quantitative Systems Biology
Evolution Strategry (ES) - Part 1 - Introduction to Evolution Strategy
This video is about Evolution Strategry (ES) - Part 1 - Introduction to Evolution Strategy
From playlist Optimization
How to find DOMINATING STRATEGIES with Game Theory
Check out Brilliant ► https://brilliant.org/TreforBazett/ Join for free and the first 200 subscribers get 20% off an annual premium subscription. Thank you to Brilliant for sponsoring this playlist on Game Theory. Check out Episodes 1 & 2 of the Game Theory Playlist ► https://www.youtub
From playlist Game Theory
Sebastian J. Schreiber: Coevolution of habitat use in stochastic environments
Species live and interact in landscapes where enviornmental conditions vary both in time and space. In the face of this spatial-temporal heterogeneity, species may co-evolve their habitat choices which determine their spatial distributions. To understand this coevolution, I present an anal
From playlist Probability and Statistics
33. Evolutionary Game Theory: Fighting and Contests
Principles of Evolution, Ecology and Behavior (EEB 122) The economic concept of game theory can be readily applied to evolution and behavior. By analyzing encounters between organisms as a mathematical "game," important information such as fitness payoffs and the proportions of "strateg
From playlist Evolution, Ecology and Behavior with Stephen C. Stearns
A Model of Tumor Heterogeneity Identifies Metastatic Disease Progression - S. Knott - 1/14/16
Full Title: A Model of Tumor Heterogeneity Identifies Novel Drivers of Metastatic Disease Progression Bioinformatics Research Symposium Beckman Institute Auditorium Thursday, January 14, 2016
From playlist Bioinformatics Research Symposium
Game theory: exercises by Vishwesha Guttal
PROGRAM : PREPARATORY SCHOOL ON POPULATION GENETICS AND EVOLUTION ORGANIZERS : Deepa Agashe and Kavita Jain DATE & TIME : 04 February 2019 to 10 February 2019 VENUE :Ramanujan Lecture Hall, ICTS Bangalore The 2019 preparatory school on Population Genetics and Evolution (PGE2019) will be
From playlist Preparatory School on Population Genetics and Evolution
Collective Phenomena, Collective Motion, and Collective Action in Ecological Systems - Simon Levin
Simon Levin Princeton University February 25, 2013 Fundamental questions in basic and applied ecology alike involve complex adaptive systems, in which localized interactions among individual agents give rise to emergent patterns that feed back to affect individual behavior. In such systems
From playlist Mathematics
Why Are There As Many Males As Females?
Evolution doesn’t pick a side! Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ In almost every animal species on Earth, equal numbers of males and females are conceived. Why is that? Especially in populations like lions or elephant se
From playlist Be Smart - LATEST EPISODES!
1.4 - Evolutionary Thinking: Adaptation: Why it is Problematic and How to Recognize it
"Evolutionary Medicine" Sinauer Associates (2015) is the textbook that supports these lectures. Instructors can request examination copies and sign up to download figures here: http://www.sinauer.com/catalog/medical/evolutionary-medicine.html
From playlist Evolution and Medicine (2015) with Stephen Stearns
On the long-term dynamics of nonlinear dispersive evolution equations - Wilhelm Schlag
Analysis Seminar Topic: On the long-term dynamics of nonlinear dispersive evolution equations Speaker: Wilhelm Schlag Affiliation: University of Chicago Visiting Professor, School of Mathematics Date: Febuary 14, 2018 For more videos, please visit http://video.ias.edu
From playlist Mathematics