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Collaborative plans for complex group action

by Barbara J. Grosz , Sarit Kraus , 1996
"... The original formulation of SharedPlans by B. Grosz and C. Sidner ( 1990) was developed to provide a model of collaborative planning in which it was not necessary for one agent to have intentions-to toward an act of a different agent. Unlike other contemporaneous approaches (J.R. Searle, 1990), this ..."
Abstract - Cited by 543 (30 self) - Add to MetaCart
agent has only partial knowledge; this reformulation meshes with the definition of SharedPlans. The new definitions also allow for contracting out certain actions. The formalization that results has the features required by Bratrnan’s ( 1992) account of shared cooperative activity and is more general

Social force model for pedestrian dynamics

by Dirk Helbing, Péter Molnár - Physical Review E , 1995
"... It is suggested that the motion of pedestrians can be described as if they would be subject to ‘social forces’. These ‘forces ’ are not directly exerted by the pedestrians ’ personal environment, but they are a measure for the internal motivations of the individuals to perform certain actions (movem ..."
Abstract - Cited by 504 (25 self) - Add to MetaCart
It is suggested that the motion of pedestrians can be described as if they would be subject to ‘social forces’. These ‘forces ’ are not directly exerted by the pedestrians ’ personal environment, but they are a measure for the internal motivations of the individuals to perform certain actions

CERTAIN ACTIONS OF CURARE ON THE CENTRAL NERVOUS SYSTEM

by E. L. Mccawley , 1949
"... There has been a revival of interest in the possible actions of curare on the central nervous system as a consequence of the recent use of purified curare preparations in clinical anesthesia and in the treatment of dystonic and dys rhythmic states. The classic studies of Claude Bernard, which demons ..."
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There has been a revival of interest in the possible actions of curare on the central nervous system as a consequence of the recent use of purified curare preparations in clinical anesthesia and in the treatment of dystonic and dys rhythmic states. The classic studies of Claude Bernard, which

Propagation of Trust and Distrust

by R. Guha, Ravi Kumar, Prabhakar Raghavan, Andrew Tomkins , 2004
"... A network of people connected by directed ratings or trust scores, and a model for propagating those trust scores, is a fundamental building block in many of today's most successful e-commerce and recommendation systems. In eBay, such a model of trust has significant influence on the price an i ..."
Abstract - Cited by 439 (1 self) - Add to MetaCart
an item may command. In Epinions (epinions.com), conclusions drawn from the web of trust are linked to many behaviors of the system, including decisions on items to which each user is exposed. We develop a framework of trust propagation schemes, each of which may be appropriate in certain circumstances

Policy gradient methods for reinforcement learning with function approximation.

by Richard S Sutton , David Mcallester , Satinder Singh , Yishay Mansour - In NIPS, , 1999
"... Abstract Function approximation is essential to reinforcement learning, but the standard approach of approximating a value function and determining a policy from it has so far proven theoretically intractable. In this paper we explore an alternative approach in which the policy is explicitly repres ..."
Abstract - Cited by 439 (20 self) - Add to MetaCart
that the gradient can be written in a form suitable for estimation from experience aided by an approximate action-value or advantage function. Using this result, we prove for the first time that a version of policy iteration with arbitrary differentiable function approximation is convergent to a locally optimal

Dual-task interference in simple tasks: Data and theory

by Harold Pashler - Psychological Bulletin , 1994
"... People often have trouble performing 2 relatively simple tasks concurrently. The causes of this interference and its implications for the nature of attentional limitations have been controversial for 40 years, but recent experimental findings are beginning to provide some answers. Studies of the psy ..."
Abstract - Cited by 434 (12 self) - Add to MetaCart
of the psychological refractory period effect indicate a stubborn bottleneck encompassing the process of choosing actions and probably memory retrieval generally, together with certain other cognitive operations. Other limitations associated with task preparation, sensory-perceptual processes, and timing can generate

Forward models: Supervised learning with a distal teacher

by Michael I. Jordan, David E. Rumelhart - Cognitive Science , 1992
"... Internal models of the environment have an important role to play in adaptive systems in general and are of particular importance for the supervised learning paradigm. In this paper we demonstrate that certain classical problems associated with the notion of the \teacher " in supervised lea ..."
Abstract - Cited by 421 (9 self) - Add to MetaCart
Internal models of the environment have an important role to play in adaptive systems in general and are of particular importance for the supervised learning paradigm. In this paper we demonstrate that certain classical problems associated with the notion of the \teacher " in supervised

On Distinguishing Epistemic from Pragmatic Action

by David Kirsh, Paul Maglio - Cognitive Science , 1994
"... We present data and argument to show that in Tetris-a real-time, interactive video game-certain cognitive and perceptual problems ore more quicktv, easily, and reliably solved by performing actions in the world than by performing com-putational actions in the head atone. We have found that some of t ..."
Abstract - Cited by 341 (10 self) - Add to MetaCart
We present data and argument to show that in Tetris-a real-time, interactive video game-certain cognitive and perceptual problems ore more quicktv, easily, and reliably solved by performing actions in the world than by performing com-putational actions in the head atone. We have found that some

Generalized fixed-point algebras of certain actions on crossed products

by Beatriz Abadie - Pacific J. Math , 1995
"... Abstract: Let G and H be two locally compact groups acting on a C*-algebra A by commuting actions λ and σ. We construct an action on A ×λ G out of σ and a unitary 2-cocycle u. For A commutative, and free and proper actions λ and σ, we show that if the roles of λ and σ are reversed, and u is replaced ..."
Abstract - Cited by 13 (3 self) - Add to MetaCart
Abstract: Let G and H be two locally compact groups acting on a C*-algebra A by commuting actions λ and σ. We construct an action on A ×λ G out of σ and a unitary 2-cocycle u. For A commutative, and free and proper actions λ and σ, we show that if the roles of λ and σ are reversed, and u

Anti de Sitter space and holography

by Edward Witten , 1998
"... Recently, it has been proposed by Maldacena that large N limits of certain conformal field theories in d dimensions can be described in terms of supergravity (and string theory) on the product of d+1-dimensional AdS space with a compact manifold. Here we elaborate on this idea and propose a precise ..."
Abstract - Cited by 383 (7 self) - Add to MetaCart
Recently, it has been proposed by Maldacena that large N limits of certain conformal field theories in d dimensions can be described in terms of supergravity (and string theory) on the product of d+1-dimensional AdS space with a compact manifold. Here we elaborate on this idea and propose a precise
Results 1 - 10 of 9,818