Author: cxdig

Special Issue: Information Theory for Human and Social Processes

Shannon famously applied his “mathematical theory of communication” to human communication, alledgedly having his wife, Betty, estimating word probabilities to calcualte the first approximation of the entropy of English. The following decades have seen creative further applications to humans and social processes (e.g., Miller, 1956; Attneave, 1959; Coleman, 1975; Ellis and Fisher, 1975; Cappella, 1979). These efforts lost steam in the 1980s, mainly because of the lack of adequate data, and limited computational power. Both limitations do not apply anymore. The increase in human interactions taking place in digital environments has led to an abundance of behavioral “big data”, enough even to calculate measures that converge rather slowly.

 

This Special Issue compiles creative research on the innovative uses of information theory, and its extensions, to better understand human behavior and social processes. Among other topics, the focus is set on human communication, social organization, social algorithms, human–machine interaction, artificial and human intelligence, collaborative teamwork, social media dynamics, information societies, digital development, and cognitive and machine biases—all online and/or offline. 

Source: www.mdpi.com

Complexity Explained

Complexity science, also called complex systems science, studies how a large collection of components – locally interacting with each other at small scales – can spontaneously self-organize to exhibit non-trivial global structures and behaviors at larger scales, often without external intervention, central authorities or leaders. The properties of the collection may not be understood or predicted from the full knowledge of its constituents alone. Such a collection is called a complex system and it requires new mathematical frameworks and scientific methodologies for its investigation.

Here are a few things you should know about complex systems,
result of a worldwide collaborative effort from leading experts, practitioners and students in the field.

Source: complexityexplained.github.io

Rank-frequency distribution of natural languages: A difference of probabilities approach

• The dynamics of frequency-rank relations in six languages is analyzed.

• Acceptable agreement is found for the quenched rank frequency data of these languages.

• This approach might find applications in other ranked systems, such as sports.

 

Rank-frequency distribution of natural languages: A difference of probabilities approach

Germinal Cocho, Rosalío F. Rodríguez, Sergio Sánchez, Jorge Flores, Carlos Pineda, Carlos Gershenson

Physica A: Statistical Mechanics and its Applications
Volume 532, 15 October 2019, 121795

Source: www.sciencedirect.com

Information-theoretic measures of ecosystem change, sustainability, and resilience

We introduce five measures describing the system-wide behaviour of complex ecological systems. Within an information-theoretic framework, these measures account for changes in both species diversity and total biomass to describe (i) overall system change, (ii) sustainability to external pressure, (iii) shift from a baseline state and two types of resilience: (iv) ability to recover from local pressures and (v) overall potential to return to a baseline state. We apply these measures to study the behaviour of three computer models: a large 59-functional groups complex ecological model (Ecopath with Ecosim) of north Western Australia undergoing internal dynamics, a smaller 6-group coral reef model subjected to various combinations of single and multiple stressors and a prey–predator model displaying limit cycles. We demonstrate the state-dependency of properties like resilience and sustainability by showing how these measures change in time as a function of internal dynamics and external forcing. Furthermore, we show how our proposed measures can simplify system analysis and monitoring by providing indicators of changes in system behaviour, sustainability, and resilience.

 

Information-theoretic measures of ecosystem change, sustainability, and resilience
Fabio Boschetti Karine Prunera Mathew A Vanderklift Damian P Thomson Russell C Babcock Christopher Doropoulos Anna Cresswell Hector Lozano-Montes
ICES Journal of Marine Science, fsz105

Source: academic.oup.com