"This article is a review of--and response to--a special issue of Mathematical Population Studies that focused on the relative performance of simpler vs. more complex population projection models. I do not attempt to summarize or comment on each of the articles in the special issue, but rather present an additional perspective on several points: definitions of simplicity and complexity, empiric...

We introduce an efficient algorithm for mining informative combinations of attribute-values for a given task. We use informative attributevalues to enhance the input representation of data. We apply our approach to coreference resolution using a simple set of attributes like syntactic roles and string match. With the enhanced representation, a simple coreference model outperforms more complex s...

1 The author gratefully acknowledges the assistance of the Santa Fe Institute in providing the materials from which the majority of this paper has been drawn. In particular, thanks are due to Thomas Kepler, Vice President for Academic Affairs and J. Doyne Farmer, whose theoretical breakthroughs and continuing efforts to bridge the disciplinary gap between physics and finance have helped to make...

The concept of Swarm Intelligence (SI) was first introduced by Gerardo Beni, Suzanne Hackwood, and Jing Wang in 1989 when they were investigating the properties of simulated, self-organizing agents in the framework of cellular robotic systems [1]. Eric Bonabeau, Marco Dorigo, and Guy Theraulaz extend the restrictive context of this early work to include “any attempt to design algorithms or dist...

In Part I an expository overview of the basic concepts of the theory of games was presented. The different forms for representing a game were noted and the various solutions were discussed and illustrated. Here we examine the highly different approaches adopted by those who regard themselves as game theorists and by those others who utilize game theory We examine the four most important distinc...

Listening habits are strongly influenced by two opposing aspects, the desire for variety and the demand for uniformity in music. In this work we quantify these two notions in terms of instrumentation and production technologies that are typically involved in crafting popular music. We assign an 'instrumentational complexity value' to each music style. Styles of low instrumentational complexity ...

syntax. Even at the earliest stages, there is syntactic complexity. Children’s early production may be grammatically conservative, constrained in production and operating with a restricted lexicon, but it still demonstrates abstraction, generative capacity, and principled behavior. These approaches can be summarized: 1. Regularities in grammar are an acquired from experience itself versus 2. Pr...

Cardiomyopathies are primary disorders of cardiac muscle associated with abnormalities of cardiac wall thickness, chamber size, contraction, relaxation, conduction, and rhythm. They are a major cause of morbidity and mortality at all ages and, like acquired forms of cardiovascular disease, frequently progress into heart failure.1 In contrast to dilated cardiomyopathy (DCM), which is characteriz...

The existence of immune and simple sets in relativizations of the probabilistic polynomial time bounded classes is studied. Some techniques previously used to show similar results for relativizations of P and NP are adapted to the probabilistic classes. Using these results, an exhaustive settling of ail possible strong séparations among these relativized classes is obtained. Résumé. -On étudie ...

One of the central themes in materials science is the structure-property relationship. In conventional crystalline metals, their mechanical behaviour is often dictated by well-defined structural defects such as dislocations, impurities, and twins. However, the structure-property relationship in amorphous alloys is far from being understood, due to great difficulties in characterizing and descri...