Strategy sets closed under payoff sampling

Producción CientíficaWe consider population games played by procedurally rational players who, when revising their current strategy, test each of their available strategies independently in a series of random matches –i.e., a battery of tests–, and then choose the strategy that performed best in this battery of tests. This revision protocol leads to the so-called payoff-sampling dynamics (aka test-all Best Experienced Payoff dynamics). In this paper we characterize the support of all the rest points of these dynamics in any game and analyze the asymptotic stability of the faces to which they belong. We do this by defining strategy sets closed under payoff sampling, and by proving that the identification of these sets can be made in terms of simple comparisons between some of the payoffs of the game

Stability of strict equilibria in best experienced payoff dynamics: Simple formulas and applications

Producción CientíficaWe consider a family of population game dynamics known as Best Experienced Payoff Dynamics. Under these dynamics, when agents are given the opportunity to revise their strategy, they test some of their possible strategies a fixed number of times. Crucially, each strategy is tested against a new randomly drawn set of opponents. The revising agent then chooses the strategy whose total payoff was highest in the test, breaking ties according to a given tie-breaking rule. Strict Nash equilibria are rest points of these dynamics, but need not be stable. We provide some simple formulas and algorithms to determine the stability or instability of strict Nash equilibria.Agencia Estatal de Investigación (project PID2020-118906GB-I00/AEI/10.13039/501100011033)Ministerio de Ciencia, Innovación y Universidades (projects PRX19/00113 and PRX21/00295)Fulbright Program (projects PRX19/00113 and PRX21/00295

Repeated games with endogenous separation

Producción CientíficaWe consider repeated games with endogenous separation – also known as voluntarily separable or voluntary partnership games – and their evolutionary dynamics. We formulate the replicator dynamics for games with endogenous separation, and provide a definition of neutral stability that guarantees Lyapunov stability in the replicator dynamics. We also provide existence results for monomorphic neutrally stable states in games with endogenous separation.Organización de Empresas y CI

LABEXNET: un laboratorio de economía experimental en Internet

La Economía Experimental ha desarrollado diferentes experimentos que pueden ser aprovechados como una actividad docente en la enseñanza de la Economía. Su naturaleza activa y participativa motiva a los alumnos y estimula la reflexión y la mejor comprensión de algunos fenómenos económicos como el funcionamiento de los mercados, donde los resultados individuales dependen del conjunto de las decisiones de los agentes y de sus interacciones. Los experimentos económicos tienen ya una larga tradición, y han proporcionado resultados espectaculares y conclusiones ampliamente admitidas sobre la dinámica de mercados y el efecto de las instituciones económicas. Las nuevas tecnologías facilitan la realización y el análisis de estos experimentos. En este artículo presentamos LABEXNET, un programa informático para la realización de experimentos económicos por Internet puesto a libre disposición de la comunidad académica

Mamdani Fuzzy Systems for Modelling and Simulation: A Critical Assessment

Producción CientíficaFuzzy logic presents many potential applications for modelling and simulation. In particular, this paper analyses one of the most popular fuzzy logic techniques: Mamdani systems. Mamdani systems can look particularly appealing because they are designed to incorporate expert knowledge in the form of IF-THEN rules expressed in natural language. While this is an attractive feature for modelling and simulating social and other complex systems, its actual application presents important caveats. This paper studies the potential use of Mamdani systems to explore the logical consequences of a model based on IF-THEN rules via simulation. We show that in the best-case scenario a Mamdani system provides a function that complies with its generating set of IF-THEN rules, which is a different exercise from that of finding the relation or consequences implied by those rules. In general, the logical consequences of a set of rules cannot be captured by a single function. Furthermore, the consequences of an IF-THEN rule in a Mamdani system can be very different from the consequences of that same rule in a system governed by the most basic principles of logical deductive inference. Thus, care must be taken when applying this tool to study “the consequences” of a set of hypothesis. Previous analyses have typically focused on particular steps of the Mamdani process, while here we present a holistic assessment of this technique for (deductive) simulation purposes.FEDER/Ministerio de Ciencia, Innovación y Universidades – Agencia Estatal de Investigación/ _Proyecto ECO2017-83147- C2-1-P.Ministry of Science and Innovation’s project CSD2010-00034 (SIMULPAST)Australian Research Council’s Discovery Projects funding scheme (project number DP130100570, “Modelling Network Innovation Performance Capability: A Multidisciplinary Approach”

An introduction to ABED: Agent-based simulation of evolutionary game dynamics

Producción CientíficaABED is free and open-source software for simulating evolutionary game dynamics in finite populations. We explain how ABED can be used to simulate a wide range of dynamics considered in the literature and many novel dynamics. In doing so, we introduce a general model of revisions for dynamic evolutionary models, one that decomposes strategy updates into selection of candidate strategies, payoff determination, and choice among candidates. Using examples, we explore ways in which simulations can complement theory in increasing our understanding of strategic interactions in finite populations.Ministerio de Educación, Cultura, y Deporte (Grants PRX15/00362 and PRX16/00048)FEDER/Ministerio de Ciencia, Innovación y Universidades – Agencia Estatal de Investigación/ _Proyecto ECO2017-83147- C2-2-P.U.S. National Science Foundation (Grants SES-1458992 and SES1728853)U.S. Army Research Office (Grant MSN201957

LABEXNET: un laboratorio de economía experimental en Internet

Experimental Economists have designed over the years a wide range of scientific experiments that can be usefully employed nowadays as teaching aids. The interactive and participatory nature of such experiments serves as a motivation to students, stimulates their own thinking, and enhances their insights into the forces that drive economic markets: the aggregate interactions of economic agents within a market institution. Economic classroom games have been recognised as useful teaching tools for decades, and they have often produced surprising results and better understanding of market dynamics and institutions. Nowadays the new information technologies can be brought into play to conduct and analyse experimental games in unprecedented ways: using Internet-based tools, the design, execution and analysis of classroom games can be made considerably easier than traditionally. In this paper we introduce LABEXNET, a program designed to conduct Internet-based economic classroom games. LABEXNET is freely available to the academic community.La Economía Experimental ha desarrollado diferentes experimentos que pueden ser aprovechados como una actividad docente en la enseñanza de la Economía. Su naturaleza activa y participativa motiva a los alumnos y estimula la reflexión y la mejor comprensión de algunos fenómenos económicos como el funcionamiento de los mercados, donde los resultados individuales dependen del conjunto de las decisiones de los agentes y de sus interacciones. Los experimentos económicos tienen ya una larga tradición, y han proporcionado resultados espectaculares y conclusiones ampliamente admitidas sobre la dinámica de mercados y el efecto de las instituciones económicas. Las nuevas tecnologías facilitan la realización y el análisis de estos experimentos. En este artículo presentamos LABEXNET, un programa informático para la realización de experimentos económicos por Internet puesto a libre disposición de la comunidad académica

Revista electrónica de investigación y evaluación educativa

Resumen basado en el de la publicaciónTítulo, resumen y palabras clave también en inglésLa Economía Experimental ha desarrollado diferentes experimentos que pueden ser aprovechados como una actividad docente en la enseñanza de la Economía. Su naturaleza activa y participativa motiva a los alumnos y estimula la reflexión y la mejor comprensión de algunos fenómenos económicos como el funcionamiento de los mercados, donde los resultados individuales dependen del conjunto de las decisiones de los agentes y de sus interacciones. Los experimentos económicos tienen ya una larga tradición, y han proporcionado resultados espectaculares y conclusiones ampliamente admitidas sobre la dinámica de mercados y el efecto de las instituciones económicas. Las nuevas tecnologías facilitan la realización y el análisis de estos experimentos. Se presenta LABEXNET, un programa informático para la realización de experimentos económicos por Internet puesto a libre disposición de la comunidad académica.ES

LABEXNET: Internet-based Laboratory for Experimental Economics

La Economía Experimental ha desarrollado diferentes experimentos que pueden ser aprovechados como una actividad docente en la enseñanza de la Economía. Su naturaleza activa y participativa motiva a los alumnos y estimula la reflexión y la mejor comprensión de algunos fenómenos económicos como el funcionamiento de los mercados, donde los resultados individuales dependen del conjunto de las decisiones de los agentes y de sus interacciones. Los experimentos económicos tienen ya una larga tradición, y han proporcionado resultados espectaculares y conclusiones ampliamente admitidas sobre la dinámica de mercados y el efecto de las instituciones económicas. Las nuevas tecnologías facilitan la realización y el análisis de estos experimentos. En este artículo presentamos LABEXNET, un programa informático para la realización de experimentos económicos por Internet puesto a libre disposición de la comunidad académica.Experimental Economists have designed over the years a wide range of scientific experiments that can be usefully employed nowadays as teaching aids. The interactive and participatory nature of such experiments serves as a motivation to students, stimulates their own thinking, and enhances their insights into the forces that drive economic markets: the aggregate interactions of economic agents within a market institution. Economic classroom games have been recognised as useful teaching tools for decades, and they have often produced surprising results and better understanding of market dynamics and institutions. Nowadays the new information technologies can be brought into play to conduct and analyse experimental games in unprecedented ways: using Internet-based tools, the design, execution and analysis of classroom games can be made considerably easier than traditionally. In this paper we introduce LABEXNET, a program designed to conduct Internet-based economic classroom games. LABEXNET is freely available to the academic community

LABEXNET : un laboratorio de economía experimental en internet

La Economía Experimental ha desarrollado diferentes experimentos que pueden ser aprovechados como una actividad docente en la enseñanza de la Economía. Su naturaleza activa y participativa motiva a los alumnos y estimula la reflexión y la mejor comprensión de algunos fenómenos económicos como el funcionamiento de los mercados, donde los resultados individuales dependen del conjunto de las decisiones de los agentes y de sus interacciones. Los experimentos económicos tienen ya una larga tradición, y han proporcionado resultados espectaculares y conclusiones ampliamente admitidas sobre la dinámica de mercados y el efecto de las instituciones económicas. Las nuevas tecnologías facilitan la realización y el análisis de estos experimentos. En este artículo presentamos LABEXNET, un programa informático para la realización de experimentos económicos por Internet puesto a libre disposición de la comunidad académicaExperimental Economists have designed over the years a wide range of scientific experiments that can be usefully employed nowadays as teaching aids. The interactive and participatory nature of such experiments serves as a motivation to students, stimulates their own thinking, and enhances their insights into the forces that drive economic markets: the aggregate interactions of economic agents within a market institution. Economic classroom games have been recognised as useful teaching tools for decades, and they have often produced surprising results and better understanding of market dynamics and institutions. Nowadays the new information technologies can be brought into play to conduct and analyse experimental games in unprecedented ways: using Internet-based tools, the design, execution and analysis of classroom games can be made considerably easier than traditionally. In this paper we introduce LABEXNET, a program designed to conduct Internet-based economic classroom games. LABEXNET is freely available to the academic communit