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L. Nadel and D. Stein, eds.,SFI 1992 Lectures in Complex Systems, 163184, AddisonWesley 1993

Summary: L. Nadel and D. Stein, eds.,SFI 1992 Lectures in
Complex Systems, 163­184, Addison­Wesley 1993
The Emergence of Computational Ecologies
Bernardo A. Huberman and Tad Hogg
Xerox Palo Alto Research Center, Palo Alto, California 94304 USA
We describe a form of distributed computation in which agents have incomplete
knowledge and imperfect information on the state of the system, and an instantiation
of such systems based on market mechanisms. When agents can choose among
several resources, the dynamics of the system can be oscillatory and even chaotic.
A mechanism is described for achieving global stability through local controls.
1. Introduction
Propelled by advances in software design and increasing connectivity of computer
networks, distributed computational systems are starting to spread throughout offices, lab-
oratories, countries and continents. In these systems computational processes consisting
of the active execution of programs, can spawn new ones in other machines as they make
use of printers, file servers, and other machines of the network as the need arises. In the
most complex applications, various processes can collaborate to solve problems while
competing for the available computational resources, and may also directly interact with
the physical world. This contrasts with the more familiar stand-alone computers, with


Source: Androulakis, Ioannis (Yannis) - Biomedical Engineering Department & Department of Chemical and Biochemical Engineering, Rutgers University


Collections: Engineering; Biology and Medicine