Using a variety of analogy puzzles, SFI researchers have shown that the reasoning abilities of OpenAI’s GPT-4 model fall ...

Lynne KieslingDirector of the Institute for Regulatory Law & Economics, and Faculty Fellow, at Northwestern University, and Author of "The Essential Ronald Coase" ...

Size distributions in some ecosystems follow a power (Zipf-)law behavior spanning up to two ten decades. A model for the origins of this scaling behavior is presented. The model shows that the ...

Elections are a well-documented example of collective human decision-making, with voting data available for elections globally over several decades. SFI Complexity Postdoctoral Fellow Aanjaneya Kumar, ...

Societies today face daunting challenges: population growth, rapid urbanization, ecological and environmental disturbances, and an unpredictable global marketplace. To address these complex and ...

Polygyny is thought to be more prevalent where male wealth inequality is greater; however, the decline of polygyny in most of the world occurred with the emergence of capital-intensive farming with ...

We develop a unifying approach for complexity measures, based on the principle that complexity requires interactions at different scales of description. Complex systems are more than the sum of their ...

Themes are institute-wide research topics that draw together large networks of researchers from the extended SFI network and beyond. Over the course of several years, researchers rigorously engage ...

Careful examination of the axioms, and interpretation conventions, of utility theory and thermodynamics reveals that the two domains are more similar mathematically than their divergent approaches to ...

We show that all algorithms that search for an extremum of a cost function perform exactly the same, when averaged over all possible cost functions. In particular, if algorithm A outperforms algorithm ...

Self-organizing maps (SOM) are unsupervised, competitive neural networks used to project high-dimensional data onto a low-dimensional space. In this article we show how SOM can be sued to draw graphs ...

Swarm is a multi-agent software platform for the simulation of complex adaptive systems. In the Swarm system the basic unit of simulation is the “swarm,” a collection of agents executing a schedule of ...