DM - GAMA - Comunicaciones en Congresos y otros eventoshttp://hdl.handle.net/10016/58592015-08-30T05:54:32Z2015-08-30T05:54:32ZLearning dynamics explains human behavior in Prisoner's Dilemma on networksCimini, GiulioSánchez, Angelhttp://hdl.handle.net/10016/214412015-07-17T08:48:25Z2014-03-31T00:00:00ZLearning dynamics explains human behavior in Prisoner's Dilemma on networks
Cimini, Giulio; Sánchez, Angel
Cooperative behavior lies at the very basis of human societies, yet its evolutionary origin remains a key unsolved puzzle. Whereas reciprocity or conditional cooperation is one of the most prominent mechanisms proposed to explain the emergence of cooperation in social dilemmas, recent experimental findings on networked Prisoner's Dilemma games suggest that conditional cooperation also depends on the previous action of the player—namely on the 'mood' in which the player currently is. Roughly, a majority of people behave as conditional cooperators if they cooperated in the past, while they ignore the context and free-ride with high probability if they did not. However, the ultimate origin of this behavior represents a conundrum itself. Here we aim specifically at providing an evolutionary explanation of moody conditional cooperation. To this end, we perform an extensive analysis of different evolutionary dynamics for players' behavioral traits—ranging from standard processes used in game theory based on payoff comparison to others that include non-economic or social factors. Our results show that only a dynamic built upon reinforcement learning is able to give rise to evolutionarily stable moody conditional cooperation, and at the end to reproduce the human behaviors observed in the experiments.
The proceeding at: DPG-Frühjahrstagung (SOE: Fachverband Physik sozio-ökonomischer Systeme) = DPG Spring Meeting (Physics of Socio-Economic Systems), took place 2014 31- March, 04-April, in Dresden (Germany).
2014-03-31T00:00:00ZRecent trends in orthogonal polynomials and their applicationsMarcellán, FranciscoArvesú, Jorgehttp://hdl.handle.net/10016/69352013-09-30T17:03:54Z2001-01-01T00:00:00ZRecent trends in orthogonal polynomials and their applications
Marcellán, Francisco; Arvesú, Jorge
In this contribution we summarize some new directions in the theory of orthogonal polynomials. In particular, we emphasize three kinds of orthogonality conditions which
have attracted the interest of researchers from the last decade to the present time. The
connection with operator theory, potential theory and numerical analysis will be shown.
29 pages, 1 figure.-- MSC2000 codes: 42C05, 33C45.-- Contributed to: XVII CEDYA: Congress on differential equations and applications/VII CMA: Congress on applied mathematics (Salamanca, Spain, Sep 24-28, 2001).; MR#: MR1873645 (2002i:42031); Zbl#: Zbl 1026.42025
2001-01-01T00:00:00ZOn the stability of recurrence relations for hypergeometric functionsDeaño, AlfredoSegura, Javierhttp://hdl.handle.net/10016/66572013-09-30T17:03:55Z2005-01-01T00:00:00ZOn the stability of recurrence relations for hypergeometric functions
Deaño, Alfredo; Segura, Javier
We consider the three term recurrence relations y_n+1 + a_n y_n + b_n y_n-1 = 0 satisfied simultaneously by confluent hypergeometric functions M(a+kn; c+mn; x) and U(a+kn; c+mn; x) (up to normalizations not depending on x). The parameters a, c, x are fixed and k,m = 0,±1. The existence of minimal solutions when n -> ∞ is a crucial piece of information when we intend to use
a recurrence relation for computation. However, in some cases the behavior of the solutions for moderate values of n can be opposite to the asymptotic behaviour. We provide numerical examples of this phenomenon, already noted by W. Gautschi in the case (k,m) = (1,1), both for the recurrence relations and for the associated continued fractions.
4 pages, no figures.-- MSC2000 codes: 33C15, 33F05, 40A15.-- Running title: "Recurrences and continued fractions for Kummer functions".; Contributed to: ICNAAM 2005: Official conference of the European Society of Computational Methods in Sciences and Engineering (Rhodes, Greece, Sep 16-20, 2005).; Zbl#: Zbl 1086.33007
2005-01-01T00:00:00ZAsymptotic behavior of orthogonal polynomials primitivesFundora, AlfredoPijeira, HéctorUrbina, Wilfredohttp://hdl.handle.net/10016/65712014-04-08T11:25:52Z2001-01-01T00:00:00ZAsymptotic behavior of orthogonal polynomials primitives
Fundora, Alfredo; Pijeira, Héctor; Urbina, Wilfredo
We study the zero location and the asymptotic behavior of the primitives of the standard orthogonal polynomials with respect to a finite positive Borel measure concentrate on [−1,1].
7 pages, no figures.-- MSC2000 codes: 42C05, 33C25.
2001-01-01T00:00:00Z