Foundations of Rational Agency


Book Description

This volume represents an advanced, comprehensive state-of-the-art survey of the field of rational agency as it stands today. It covers the philosophical foundations of rational agency, logical and decision-theoretic approaches to rational agency, multi-agent aspects of rational agency and a number of approaches to programming rational agents. It will be of interest to researchers in logic, mainstream computer science, the philosophy of rational action and agency, and economics.




Foundations of Rational Choice Under Risk


Book Description

In this book, Paul Anand examines the normative interpretation of Subjective Expected Utility (SEU). He tests the philosophical and logical basis for associating SEU with rational choice. Decision theorists have increasingly come to accept the experimental evidence that subjects systematicallyviolate the axiomatic assumptions of SEU, and as a result the past decade has witnessed an explosion of mathematical models that seek to capture this behaviour. A current issue is whether axioms of SEU really are canons of rationality. Anand discusses whether the new decision-theoretic models aremore than just accounts of irrational behaviour. The main themes of the book are that, empirically, SEU is false, and that normatively it imposes unnecessary constraints on rational agency. Problems with Bayesianism are introduced and it is shown that useful distinctions between risk and uncertainty (in a Keynesian sense) can be made. Some of theradical methodological changes in economics that underpin theoretical developments in decision theory and economics are also discussed.




Reasoning about Rational Agents


Book Description

This book focuses on the belief-desire-intention (BDI) model of rational agents, which recognizes the primacy of beliefs, desires, and intentions in rational action. One goal of modern computer science is to engineer computer programs that can act as autonomous, rational agents; software that can independently make good decisions about what actions to perform on our behalf and execute those actions. Applications range from small programs that intelligently search the Web buying and selling goods via electronic commerce, to autonomous space probes. This book focuses on the belief-desire-intention (BDI) model of rational agents, which recognizes the primacy of beliefs, desires, and intentions in rational action. The BDI model has three distinct strengths: an underlying philosophy based on practical reasoning in humans, a software architecture that is implementable in real systems, and a family of logics that support a formal theory of rational agency.The book introduces a BDI logic called LORA (Logic of Rational Agents). In addition to the BDI component, LORA contains a temporal component, which allows one to represent the dynamics of how agents and their environments change over time, and an action component, which allows one to represent the actions that agents perform and the effects of the actions. The book shows how LORA can be used to capture many components of a theory of rational agency, including such notions as communication and cooperation.




Agency in Action


Book Description

This series will include monographs and collections of studies devoted to the investigation and exploration of knowledge, information, and data-processing systems of all kinds, no matter whether human, (other) animal, or machine. Its scope is intended to span the full range of interests from classical problems in the philosophy of mind and philosophical psychology through issues in cognitive psychology and sociobiology (concerning the mental capabilities of other species) to ideas related to artificial intelligence and to computer science. While primary emphasis will be placed upon theoretical, conceptual, and epistemological aspects of these problems and domains, empirical, experimental, and methodological studies will also appear from time to time. Sam Coval and Peter Campbell provide a painstaking and distinctive analysis of the nature of action and agency. They introduce a conception of acts which encompasses the purposes that motivate them, the beliefs on the basis of which they are undertaken, and the effects that they bring about. They compare and contrast their account with ones advanced by Davidson, Brand, Searle, Danto, and other, while elaborating its consequences for understanding the nature of alibis, mistakes, accidents, inadvertence, and the like. The valuable diagrams and the discussion of the software program they have developed, which implements their theory, amply displays the potential of combining philosophy and AI with law and other disciplines focused upon agency. J.H.F.




Rational Powers in Action


Book Description

Human actions unfold over time, in pursuit of ends that are not fully specified in advance. Rational Powers in Action locates these features of the human condition at the heart of a new theory of instrumental rationality. Where many theories of rational agency focus on instantaneous choices between sharply defined outcomes, treating the temporally extended and partially open-ended character of action as an afterthought, this book argues that the deep structure of instrumental rationality can only be understood if we see how it governs the pursuit of long-term, indeterminate ends. These are ends that cannot be realized through a single momentary action, and whose content leaves partly open what counts as realizing the end. Sergio Tenenbaum argues that we need to focus on temporal duration and the indeterminacy of ends in intentional action, even to explain the rational governance of relatively simple actions. Theories of moment-by-moment preference maximization, or indeed any understanding of instrumental rationality on the basis of momentary mental items, cannot capture the fundamental structure of our instrumentally rational capacities. Tenenbaum provides a new theory of instrumental rationality as rationality in action.




The Works of Agency


Book Description

In these essays, McCann develops a unified perspective on human action. Written over a period of 25 years, the essays provide a comprehensive survey of the major topics in contemporary action theory. In four sections, the book addresses the ontology of action; the foundations of action; intention, will and freedom; and practical rationality. McCann works out a compromise between competing perspectives on the individuation of action; explores the foundations of action and defends a volitional theory; argues for a libertarian view of both the formation and the execution of intention; and considers the question of consistency in rational intentions, as well as the relationship between practical and theoretical reasoning.




Uncertainty, Rationality, and Agency


Book Description

This volume concerns Rational Agents - humans, players in a game, software or institutions - which must decide the proper next action in an atmosphere of partial information and uncertainty. The book collects formal accounts of Uncertainty, Rationality and Agency, and also of their interaction. It will benefit researchers in artificial systems which must gather information, reason about it and then make a rational decision on which action to take.




Rationality and Dynamic Choice


Book Description

In this major contribution to the theory of rational choice the author sets out the foundations of rational choice, and then sketches a dynamic choice framework in which principles of ordering and independence follow from a number of apparently plausible conditions. However there is potential conflict among these conditions, and when they are weakened to avoid it, the usual foundations of rational choice no longer prevail. The thrust of the argument is to suggest that the theory of rational choice is less determinate than many suppose.




Theoretical Foundations for Rational Agency in Third Generation Wargames


Book Description

Conflict between groups of armed men is as old as recorded history. Effective reasoning and decision-making are fundamental to the successful execution of military operations. These activities are of paramount importance given the high-stakes nature of conflict; most especially in this modern era of asymmetric threats and conventionally armed rogue states. Yet as high as the stakes are, there does not exist a sufficiently formal military theory of reasoning and decision-making that instantiates modern war-fighting doctrine. Large bodies of knowledge of reasoning and decision-making exist, but they are not integrated, and they (to author knowledge) have not been cast effectively into a military context. Herein, I describe a new theory of military rationality which fully captures the reasoning and decision-making processes of military personnel. The goal of the third generation wargaming effort as the Air Force Research Laboratory's Information Directorate is to produce a high-fidelity simulation of conflict environments in order to facilitate a new brand of highly immersive training for warfighters. I shall briefly highlight the philosophical foundations for the construction of such entities, and the formal techniques by which they may be modeled and engineered.




Foundations for Moral Relativism


Book Description

In this new edition of Foundations for Moral Relativism a distinguished moral philosopher tames a bugbear of current debate about cultural difference. J. David Velleman shows that different communities can indeed be subject to incompatible moralities, because their local mores are rationally binding. At the same time, he explains why the mores of different communities, even when incompatible, are still variations on the same moral themes. The book thus maps out a universe of many moral worlds without, as Velleman puts it, "moral black holes”. The six self-standing chapters discuss such diverse topics as online avatars and virtual worlds, lying in Russian and truth-telling in Quechua, the pleasure of solitude and the fear of absurdity. Accessibly written, this book presupposes no prior training in philosophy.