Complex Systems Modeling

NECSI uses conceptual and mathematical models to characterize the multiscale complexity of mathematical, physical and social systems, and solve a mystery of complex systems: strong emergence.

An Information-Theoretic Formalism for Multiscale Structure in Complex Systems, B. Allen, B. C. Stacey, Y. Bar-Yam (September 16, 2014).

The Limits of Phenomenology: From Behaviorism to Drug Testing and Engineering. Y. Bar-Yam (2013).

Computationally tractable pairwise complexity profile, Y. Bar-Yam, D. Harmon, Y. Bar-Yam (May, 2013).

Information flow through a chaotic channel: prediction and postdiction at finite resolution, R. Metzler, Y. Bar-Yam, M. Kardar (2004).

A Mathematical Theory of Strong Emergence using Multiscale Variety, Y. Bar-Yam (2004).

Multiscale Variety in Complex Systems,Y. Bar-Yam (2004).

Multiscale Representation Phase I, Report to Chief of Naval Operations Strategic Studies Group, Y. Bar-Yam, (2001).

A self-stabilizing, robust region finder applied to color and optical flow pictures, M. Ben-Ezra, M. Werman, Y. Bar-Yam (May, 2001).

Sensitivity of ballistic deposition to pseudorandom number generators, R. M. D'Souza, Y. Bar-Yam, M. Kardar (1998).

Engineering

NECSI identifies the inherent limitations of traditional engineering for highly complex challenges, and shows the potential of an evolutionary approach.

About Engineering Complex Systems: Multiscale Analysis and Evolutionary Engineering, Y. Bar-Yam, in Engineering Self Organising Systems: Methodologies and Applications, S. Brueckner, G. Di Marzo Serugendo, A. Karageorgos, R. Nagpal Eds. (2005).

Large-Scale Engineering and Evolutionary Change, Useful Concepts for Implementation of FORCEnet Y. Bar-Yam (2002).

Physics

Generalizing our understanding of information to include scale provides an important tool for characterizing any system.

Multiscale complexity of correlated Gaussians, R. Metzler, Y. Bar-Yam (2005).

Multiscale complexity/entropy, Y. Bar-Yam (2004).

Multiscale analysis of information correlations in an infinite-range, ferromagnetic Ising system, S. Gheorghiu-Svirschevski, Y. Bar-Yam, Phys Rev E 70, 066115 (2004).

Sum rule for multiscale representations of Kinematic systems,Y. Bar-Yam (2002).

Social Systems

Models of human social interaction developed by NECSI provide insight on the future of human civilization as well as achieving individual well-being.

Environmental Complexity: Information For Human-Environment Well-being. Y. Bar-Yam, A. Davidson (2006).

Complexity Rising: From Human Beings to Human Civilization, a Complexity Profile, Y. Bar-Yam (2002).

A. Davidson, M.H. Teicher, Y. Bar-Yam, The role of environmental complexity in the well being of the elderly, Complexity Chaos Nursing 3, 5 (1997).