13,870 research outputs found

    Developing a corpus of strategic conversation in The Settlers of Catan

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    International audienceWe describe a dialogue model and an implemented annotation scheme for a pilot corpus of annotated online chats concerning bargaining negotiations in the game The Settlers of Catan. We will use this model and data to analyze how conversations proceed in the absence of strong forms of cooperativity, where agents have diverging motives. Here we concentrate on the description of our annotation scheme for negotiation dialogues, illustrated with our pilot data, and some perspectives for future research on the issue

    Economics of the Firm and Economic Growth. An hybrid theoretical framework of analysis

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    The characterization of individual firms is an essential step toward the study of the behaviour of industries and other more aggregated units of economics, and so to the analysis of economic growth processes. Hence, the main goal of this study is to achieve a critical discussion around the conceptualisation of the firm and its role in the dynamical process of economic growth. The approach to the main topic starts with the construction of a theoretical matrix of the economics of the firm, opening with the two major traditions of institutionalist thought in economics, and evolving then towards some considerations around the contractual and the evolutionary approaches. Another important theoretical stream that deals with organizations in economic and sociological terms also appears, the population ecology approach. After this overview, it is developed a cross-exam of distinct theoretical perspectives and the identification of possible flaws of the neoclassical theory. This confrontation, which goes throughout many imperative and controversial issues within economics such as the nature of the firm and the cognitive capacities of economic agents, results in a systematisation about the impact of this discussion on economic growth. The conclusions appear as crucial to develop further research aiming the construction of economic growth models based on a microeconomics that is closer to the reality of firms.Firm; Economic Growth; Institutionalism; Evolutionary theory; Contractual Theory; Ecology Population Theory.

    The Present and Future of Game Theory

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    A broad nontechnical coverage of many of the developments in game theory since the 1950s is given together with some comments on important open problems and where some of the developments may take place. The nearly 90 references given serve only as a minimal guide to the many thousands of books and articles that have been written. The purpose here is to present a broad brush picture of the many areas of study and application that have come into being. The use of deep techniques flourishes best when it stays in touch with application. There is a vital symbiotic relationship between good theory and practice. The breakneck speed of development of game theory calls for an appreciation of both the many realities of conflict, coordination and cooperation and the abstract investigation of all of them.Game theory, Application and theory, Social sciences, Law, Experimental gaming, conflict, Coordination and cooperation

    Bargaining and Search: An Experimental Study

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    We study experimentally two versions of a model in which a buyer and a seller bargain over the price of a good; however, the buyer can choose to leave the negotiation table to search for other alternatives. Under one version, if the buyer chooses to search for a better price, the opportunity to purchase the good at the stated price is gone. Under the second version, the seller guarantees the same price if the buyer chooses to return immediately after a search (presumably because a better price could not be found). In both cases, the buyer has a fairly good idea about what to expect from the search, but because the search is costly, he has to weigh the potential benefits of the search against its cost. It turns out (theoretically) that adding search to a simple bargaining mechanism eliminates some unsatisfactory features of bargaining theory. Our experiment reveals that the model can account for some (but not all) of the behavioral regularities. In line with recent developments in behavioral decision theory and game theory, which assume bounded rationality and preferences over the relative division of a surplus, we find that subjects follow simple rules of thumb and distributional norms in choosing strategies, which are reflected in the behavioral consistencies observed in this study.Bargaining, search, outside option, ultimatum game

    Game theory

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    game theory

    From Bounded Rationality to Behavioral Economics

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    The paper provides an brief overview of the “state of the art” in the theory of rational decision making since the 1950’s, and focuses specially on the evolutionary justification of rationality. It is claimed that this justification, and more generally the economic methodology inherited from the Chicago school, becomes untenable once taking into account Kauffman’s Nk model, showing that if evolution it is based on trial-and-error search process, it leads generally to sub- optimal stable solutions: the ‘as if’ justification of perfect rationality proves therefore to be a fallacious metaphor. The normative interpretation of decision-making theory is therefore questioned, and the two challenging views against this approach , Simon’s bounded rationality and Allais’ criticism to expected utility theory are discussed. On this ground it is shown that the cognitive characteristics of choice processes are becoming more and more important for explanation of economic behavior and of deviations from rationality. In particular, according to Kahneman’s Nobel Lecture, it is suggested that the distinction between two types of cognitive processes – the effortful process of deliberate reasoning on the one hand, and the automatic process of unconscious intuition on the other – can provide a different map with which to explain a broad class of deviations from pure ‘olympian’ rationality. This view requires re-establishing and revising connections between psychology and economics: an on-going challenge against the normative approach to economic methodology.Bounded Rationality, Behavioral Economics, Evolution, As If

    Signaling and Tacit Collusion in an Infinitely Repeated Prisoners' Dilemma

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    In the context of an infinitely repeated Prisoners.Dilemma, we explore how cooperation is initiated when players signal and coordinate through their actions. There are two types of players - patient and impatient - and a player's type is private information. An impatient type is incapable of cooperative play, while if both players are patient types - and this is common knowledge - then they can cooperate with a grim trigger strategy. We find that the longer that players have gone without cooperating, the lower is the probability that they'll cooperate in the next period. While the probability of cooperation emerging is always positive, there is a positive probability that cooperation never occurs.

    Opportunistic Synthesis in Reactive Games under Information Asymmetry

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    Reactive synthesis is a class of methods to construct a provably-correct control system, referred to as a robot, with respect to a temporal logic specification in the presence of a dynamic and uncontrollable environment. This is achieved by modeling the interaction between the robot and its environment as a two-player zero-sum game. However, existing reactive synthesis methods assume both players to have complete information, which is not the case in many strategic interactions. In this paper, we use a variant of hypergames to model the interaction between the robot and its environment; which has incomplete information about the specification of the robot. This model allows us to identify a subset of game states from where the robot can leverage the asymmetrical information to achieve a better outcome, which is not possible if both players have symmetrical and complete information. We then introduce a novel method of opportunistic synthesis by defining a Markov Decision Process (MDP) using the hypergame under temporal logic specifications. When the environment plays some stochastic strategy in its perceived sure-winning and sure-losing regions of the game, we show that by following the opportunistic strategy, the robot is ensured to only improve the outcome of the game - measured by satisfaction of sub-specifications - whenever an opportunity becomes available. We demonstrate the correctness and optimality of this method using a robot motion planning example in the presence of an adversary.Comment: Submitted to Conference on Decision and Control 201
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