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What should I do next? Using shared representations to solve interaction problems

What should I do next? Using shared representations to solve interaction problems,10.1007/s00221-011-2712-1,Experimental Brain Research,Giovanni Pezzu

What should I do next? Using shared representations to solve interaction problems   (Citations: 1)
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Studies on how “the social mind” works reveal that cognitive agents engaged in joint actions actively estimate and influence another’s cognitive variables and form shared representations with them. (How) do shared representations enhance coordination? In this paper, we provide a probabilistic model of joint action that emphasizes how shared representations help solving interaction problems. We focus on two aspects of the model. First, we discuss how shared representations permit to coordinate at the level of cognitive variables (beliefs, intentions, and actions) and determine a coherent unfolding of action execution and predictive processes in the brains of two agents. Second, we discuss the importance of signaling actions as part of a strategy for sharing representations and the active guidance of another’s actions toward the achievement of a joint goal. Furthermore, we present data from a human-computer experiment (the Tower Game) in which two agents (human and computer) have to build together a tower made of colored blocks, but only the human knows the constellation of the tower to be built (e.g., red-blue-red-blue-$$\ldots$$). We report evidence that humans use signaling strategies that take another’s uncertainty into consideration, and that in turn our model is able to use humans’ actions as cues to “align” its representations and to select complementary actions.
Journal: Experimental Brain Research - EXP BRAIN RES , vol. 211, no. 3, pp. 613-630, 2011
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    • ...3 See Appendix A and Pezzulo and Dindo (2011) for a more complete description using the formalism of Dynamic Bayesian Networks...
    • ...However, it is not an exclusively linguistic phenomenon, as humans and other primates use multiple mechanisms for this sake, such as those for orienting social attention and gesture (Tomasello et al. 2005), as well as the aforementioned signaling strategies that consist in modifying action kinematics (Pezzulo and Dindo 2011 ;V esper et al.2010)...
    • ...This inference could be realized using mechanisms that “simulate” what would be implied by the different Bs (Demiris and Khadhouri 2005; Pezzulo and Dindo 2011; Wolpert et al. 2003), or via “inverse inference” (Baker et al. 2009), by considering how what is observed diverges from what would be rational...
    • ...See Bishop (2006) for reference on Bayesian generative systems, and Pezzulo and Dindo (2011) for a more complete treatment of the interactive strategy from a computational viewpoint...

    Giovanni Pezzulo. Shared Representations as Coordination Tools for Interaction

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