Agent zero : toward neurocognitive foundations for by Joshua M. Epstein

By Joshua M. Epstein

The ultimate quantity of the Groundbreaking Trilogy on Agent-Based Modeling

In this pioneering synthesis, Joshua Epstein introduces a brand new theoretical entity: Agent_Zero. This software program person, or "agent," is endowed with distinctive emotional/affective, cognitive/deliberative, and social modules. Grounded in modern neuroscience, those inner elements engage to generate saw, frequently far-from-rational, person habit. whilst a number of brokers of this new sort flow and engage spatially, they jointly generate an marvelous diversity of dynamics spanning the fields of social clash, psychology, public wellbeing and fitness, legislations, community technology, and economics.

Epstein weaves a computational tapestry with threads from Plato, Hume, Darwin, Pavlov, Smith, Tolstoy, Marx, James, and Dostoevsky, between others. This transformative synthesis of social philosophy, cognitive neuroscience, and agent-based modeling will fascinate students and scholars of each stripe. Epstein's laptop courses are supplied within the e-book or on its Princeton college Press web site, in addition to videos of his "computational parables."

Agent_Zero is a sign departure in what it contains (e.g., a brand new synthesis of neurally grounded inner modules), what it eschews (e.g., typical behavioral imitation), the phenomena it generates (from genocide to monetary panic), and the modeling arsenal it deals the clinical community.

For generative social technological know-how, Agent_Zero offers a groundbreaking imaginative and prescient and the instruments to gain it.

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28 Part II: Agent-­B ased Model Part II presents the second of these formulations: it is agent-­based and computational. Blue individuals move about an explicit landscape of yellow patches, which we initially imagine as an indigenous population. At a stochastic rate set by the user, these yellow patches turn orange, “attacking” the Blue agents. These attacks are the conditioning trials whereby Blue agents come to associate “the Yellow face” with an aversive stimulus—an attack. This association (as in the mathematical model) is governed by the Rescorla-­Wagner model.

Here, we attempt only a crude plausible synthesis of simple emotional, cognitive, and social components. But to begin at the beginning, let us examine some basic features of fear. Fear Circuitry and the Perils of Fitness A snake is suddenly thrown in your path. You automatically freeze. Why? , species) To be precise, it is stimulus-­stimulus conditioning, as distinct from so-­called operant conditioning or reinforcement learning. 42 To some readers, this language may suggest models in the general area of “cognitive architectures,” such as the SOAR model pioneered by Allen Newell.

56 Obviously, V changes over time, with repeated pairings, and in a manner usefully captured by the Rescorla-­Wagner equations (to be presented shortly). 55 He notes that infants who experience the pain of putting their finger in a candle form an indelible association between flames and pain long before they can “reason,” in his view. 56 In other conditioning contexts, this may not be the relevant conditioning metric, as Rescorla (1988) very clearly argues. 32_ Part I a R L Figure 5. Postconditioning Amygdala fMRI.

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