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Agents and Artificial Life
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Aspen mimics societal behavior
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Aspen mimics societal behavior. Edupage, 16 March 97. "A new
economic computer model called Aspen is being hailed by economists as
"the best thing that's come along in a long time" for predicting and
analyzing macroeconomic data. The program, developed at Sandia
National Laboratories, creates a make-believe world comprising up to
10,000 households plus 1,500 factories. By manipulating certain
factors, economists can watch the behavior of the agents and use that
data for economic forecasting. Aspen's results have turned up some
surprises -- during an economic slump, "the firms learned to
cooperate," says a Sandia economist. "We didn't put that into the
software. But when things stayed sour, the firms got together and
helped each other out." The size of Aspen's world is vital: "With
thousands of players, you see behavior you wouldn't get in macro
models," says the software's creator, who dreams of models with
100,000 agents or more. The software is useful for analyzing the
causes of business cycles, both nationally and in specific industries.
(Business Week 17 Mar 97)". See Prototype
computer program models dynamics of US economy -- Aspen adapts,
incorporates randomness of real world for more information.
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From Animals to Animats 4
- From Animals to Animats 4 - Proceedings of the Fourth
International Conference on Simulation of Adaptive Behavior,
September 9th-13th, 1996, Cape Cod, Massachusetts, edited by Pattie
Maes, Maja J. Mataric, Jean-Arcady Meyer, Jordan Pollack, and Stewart
W. Wilson. From Animals to Animats 4 brings together the latest
research at the frontier of an exciting new approach to understanding
intelligence. The contributors represent a broad range of interests
from artificial intelligence and robotics to ethology and the
neurosciences. Unifying these approaches is the notion of "animat" -
an artificial animal, either simulated by a computer or embodied in a
robot, which must survive and adapt in progressively more challenging
environments. The 66 contributions focus particularly on well-defined
models, computer simulations, and built robots in order to help
characterize and compare various principles and architectures capable
of inducing adaptive behavior in real or artificial animals. Topics,
all from the perspective of adaptive behavior, include: The Animat
Approach to Adaptive Behavior, Perception and Motor Control, Action
Selection and Behavioral Sequences, Internal World Models and
Navigation, Motivation and Emotions, Learning, Evolution, Coevolution,
and Collective Behavior. Complex Adaptive Systems series, A Bradford
Book, October 1996, 600 pp., $65.00 paperback, ISBN 0-262-63178-4-3.
MIT Press. 12/13/96
Artificial Life Games Homepage
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Artificial Life Games Homepage edited by L. Pagliarini, Institute
of Psychology of the C.N.R. (National Research Council) in Rome,
Italy. "Welcome to the Artificial Life Games Homepage that contains
informations about Games developed by the means of ALife
techniques. You can find all links and addresses of people involved in
this kind of activity. Moreover, some good links to people, all around
the world, that work on ALife Demos (and ALife in general) can be
found." 9/3/96
Adaptive Individuals in Evolving Populations: Models and
Algorithms
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Adaptive Individuals in Evolving Populations: Models and
Algorithms, edited by Richard K. Belew and Melanie Mitchell,
Proceedings Volume XXVI, Santa Fe Institute Studies in the Sciences of
Complexity, Addison-Wesley, Reading, MA, 1996. "A meeting held at the
Santa Fe Institute during the summer of 1993 brought together a small
group of biologists, psychologists, and computer scientists with
shared interests in questions such as these. This volume consists of
approximately two dozen papers that explore interacting adaptive
systems from a range of interdisciplinary perspectives. About half the
articles are classic, seminal references on the subject, ranging from
biologists like Lamarck and Waddington to psychologists like Piaget
and Skinner. The other papers represent new work by the workshop
participants. The role played by mathematical and computational tools,
both as models of natural phenomena and as algorithms useful in their
own right, is particularly emphasized in these new papers. In all
cases the chapters have been augmented by specially written
prefaces. In the case of the reprinted classics, the prefaces help to
put the older papers in a modern context. For the new papers, the
prefaces have been written by colleagues from a discipline other than
the paper's authors, and highligh, for example, what a computer
scientist can learn from a biologist's model, or vice versa. Through
these cross-disciplinary "dialogues" and a glossary collecting
multidisciplinary connotations of pivotal terms, the process of
interdisciplinary investigation itself becomes a central theme."
8/9/96
Massively Parallel Microworlds
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Turtles, Termites, and Traffic Jams, Explorations in Massively
Parallel Microworlds, Mitchel Resnick, 1994, Complex Adaptive
Systems series. MIT Press, A Bradford Book, ISBN 0-262-18162-2, 192
pp., $24.95 (cloth). Resnick discusses decentralized systems,
self-organizing phenomena and their simulation using the massively
parallel programming language StarLogo. 7/22/96
Swarm
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Swarm is a
software package for multi-agent simulation of complex systems being
developed at The Santa Fe Institute. Swarm is intended to be a useful
tool for researchers in a variety of disciplines, especially
artificial life. The basic architecture of Swarm is the simulation of
collections of concurrently interacting agents: with this
architecture, we can implement a large variety of agent based models.
Swarm runs on Unix machines running GNU Objective C and X windows.
The beta release is available for download to the general public and
source code is freely available under GNU Licensing
terms. 7/21/96
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- Links to CAS resources.
Autonomous characters
- Characters,
improvisation, and ... is Craig Reynolds's
collection of references to autonomous charactors that can improvise
and react to their environment. 7/21/96
New Fungus Eater Experiments
- Paper:
New Fungus Eater Experiments, Thomas Wehrle, Université de Genève,
Switzerland. Adapted from: Wehrle, T. (1994). New fungus eater
experiments. In P. Gaussier, & J.-D. Nicoud (Eds.), From perception to
action (pp. 400-403). Los Alamitos: IEEE Computer Society
Press. ABSTRACT: though there seems to be a high agreement among
researchers that the concept of autonomous agents should also be
applied in Psychology, especially in Emotion Psychology, most work did
not exceed the theoretical level yet. One reason obviously is the lack
of adequate tools for applying and exploring this concept. This paper
describes, on the bases of an implemented software package, what such
a tool could look like. This simulation package has already been used
for several applications. As an example we discuss an application that
implements the basic concepts of the Emotional (or social) Fungus
Eater of Masanao Toda. 5/9/96
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