Remember me

Register  |   Lost password?

Sign up here to let us know if you are interested in joining us for our Introduction to QuantLib Course later in the year.


Recent members



Complexity Digest wrote a new blog post titled Global Systems Science: How to Address Humanity’s Challenges
Presentation by Dirk Helbing Source: www.youtube.com
9 hours ago
Complexity Digest wrote a new blog post titled Call for Papers | ALIFE 2018
CALL FOR PAPERSThe 2018 Conference on Artificial Life (ALIFE 2018) A Hybrid of the European Conference on Artificial Life (ECAL) and the International Conference on the Synthesis and Simulation of Living Systems (ALife) July 23-27, 2018Tokyo, Japan 2018.alife.org BEYOND A.I.The “ALIFE 2018” conference will be a stimulating home for a rich and diverse research community in Artificial Life and related fields from around the world, with a special emphasis on encouraging communication and building bridges between the different research threads that make Artificial Life such an...
11 hours ago
Complexity Digest wrote a new blog post titled Serendipity and strategy in rapid innovation
Innovation is to organizations what evolution is to organisms: it is how organizations adapt to environmental change and improve. Yet despite advances in our understanding of evolution, what drives innovation remains elusive. On the one hand, organizations invest heavily in systematic strategies to accelerate innovation. On the other, historical analysis and individual experience suggest that serendipity plays a significant role. To unify these perspectives, we analysed the mathematics of innovation as a search for designs across a universe of component building blocks. We tested our insights...
4 days ago
Complexity Digest wrote a new blog post titled Quantifying China’s regional economic complexity
China’s regional economic complexity is quantified by modeling 25 years’ public firm data.High positive correlation between economic complexity and macroeconomic indicators is shown.Economic complexity has explanatory power for economic development and income inequality.Multivariate regressions suggest the robustness of these results with controlling socioeconomic factors.   Quantifying China’s regional economic complexityJian Gao, Tao Zhou Physica A: Statistical Mechanics and its ApplicationsVolume 492, 15 February 2018, Pages 1591-1603 Source: www.sciencedirect.com
6 days ago
Complexity Digest wrote a new blog post titled A Mathematician Who Decodes the Patterns Stamped Out by Life
Corina Tarnita deciphers bizarre patterns in the soil created by competing life-forms. She’s found that they can reveal whether an ecosystem is thriving or on the verge of collapse. Source: www.quantamagazine.org
6 days ago
Complexity Digest wrote a new blog post titled From Maps to Multi-dimensional Network Mechanisms of Mental Disorders
The development of advanced neuroimaging techniques and their deployment in large cohorts has enabled an assessment of functional and structural brain network architecture at an unprecedented level of detail. Across many temporal and spatial scales, network neuroscience has emerged as a central focus of intellectual efforts, seeking meaningful descriptions of brain networks and explanatory sets of network features that underlie circuit function in health and dysfunction in disease. However, the tools of network science commonly deployed provide insight into brain function at a fundamentally...
6 days ago
Complexity Digest wrote a new blog post titled Modelling indirect interactions during failure spreading in a project activity network
Spreading broadly refers to the notion of an entity propagating throughout a networked system via its interacting components. Evidence of its ubiquity and severity can be seen in a range of phenomena, from disease epidemics to financial systemic risk. In order to understand the dynamics of these critical phenomena, computational models map the probability of propagation as a function of direct exposure, typically in the form of pairwise interactions between components. By doing so, the important role of indirect exposure remains unexplored. In response, we develop a simple model that accounts...
7 days ago
Complexity Digest wrote a new blog post titled Learning how to understand complexity and deal with sustainability challenges – A framework for a comprehensive approach and its application in university education
• Sustainability challenges require both specialized and integrative approaches.• Domination of specialism and reductionism calls for emphasis on comprehensiveness.• The GHH framework can be used as a tool to add comprehensiveness in education.• The framework consists of three dimensions: generalism, holism, and holarchism.• The dialectical approach combines comprehensive and differentiative approaches. Source: www.sciencedirect.com
8 days ago
Complexity Digest wrote a new blog post titled Energy, Information, Feedback, Adaptation, and Self-organization
This unique book offers a comprehensive and integrated introduction to the five fundamental elements of life and society: energy, information, feedback, adaptation, and self-organization. It is divided into two parts. Part I is concerned with energy (definition, history, energy types, energy sources, environmental impact); thermodynamics (laws, entropy definitions, energy, branches of thermodynamics, entropy interpretations, arrow of time); information (communication and transmission, modulation–demodulation, coding–decoding, information theory, information technology, information...
8 days ago
Complexity Digest wrote a new blog post titled Using physics, math and models to fight cancer drug resistance
Despite the increasing effectiveness of breast cancer treatments over the last 50 years, tumors often become resistent to the drugs used. While drug combinations could be part of the solution to this problem, their development is very challenging. In this blog post Jorge Zanudo explains how it is possible to combine physical and mathemathical models with clinical and biological data to determine which drug combinations would be most effective in breast cancer therapy. Source: blogs.springeropen.com
8 days ago
Complexity Digest wrote a new blog post titled Workshop “Stochastic models in ecology and evolutionary biology”, 5-7th April 2018, Venice. Registration Open!
Living systems are characterized by the emergence of recurrent dynamical patterns at all scales of magnitude. Self-organized behaviors are observed both in large communities of microscopic components – like neural oscillations and gene network activity – as well as on larger levels – as predator-prey equilibria to name a few. Such regularities are deemed to be universal in the sense they are due to common mechanisms, independent of the details of the system. This belief justifies investigation through quantitative models able to grasp key features while disregarding...
8 days ago
Complexity Digest wrote a new blog post titled A framework for designing compassionate and ethical artificial intelligence and artificial consciousness
Intelligence and consciousness have fascinated humanity for a long time and we have long sought to replicate this in machines. In this work we show some design principles for a compassionate and conscious artificial intelligence. We present a computational framework for engineering intelligence, empathy and consciousness in machines. We hope that this framework will allow us to better understand consciousness and design machines that are conscious and empathetic. Our hope is that this will also shift the discussion from a fear of artificial intelligence towards designing machines that embed...
9 days ago
Complexity Digest wrote a new blog post titled Improving public transportation systems with self-organization: A headway-based model and regulation of passenger alighting and boarding
The equal headway instability—the fact that a configuration with regular time intervals between vehicles tends to be volatile—is a common regulation problem in public transportation systems. An unsatisfactory regulation results in low efficiency and possible collapses of the service. Computational simulations have shown that self-organizing methods can regulate the headway adaptively beyond the theoretical optimum. In this work, we develop a computer simulation for metro systems fed with real data from the Mexico City Metro to test the current regulatory method with a novel...
9 days ago
Complexity Digest wrote a new blog post titled A review of “Pathway Complexity”, a measure claimed to be able to distinguish life from non-life unlike no other measure before
A paper recently published in the Philosophical Transactions of the Royal Society A under the title “A probabilistic framework for identifying biosignatures using Pathway Complexity” claims to offer a revolutionary measure potentially capable of distinguishing life from non-life and even discerning life on other planets by finding biosignatures. The method proposed by its authors consists roughly in finding the generative grammar behind an object and then counting the number of steps needed to generate said object from its compressed form. Unfortunately, this does not amount to a...
9 days ago
Complexity Digest wrote a new blog post titled Conference on Complex Systems 2018, CCS2018, Thessaloniki, Greece
On behalf of the Steering Committee of the Complex Systems Society, the Organizing Committee of CCS2018 and and the Aristotle University of Thessaloniki, I would like to invite you to CCS2018, to be organized in Thessaloniki, Greece in the period September 23-28, 2018. This Conference is in line with the series of meetings previously held in Cancun, Mexico(2017), Amsterdam, Netherlands(2016), Tempe, Arizona,USA(2015), Lucca, Italy(2014), and more meetings in previous years. All these past meetings have delivered the highest quality of presentations, the most up-to-date findings, have been...
9 days ago
Complexity Digest wrote a new blog post titled Inequality in nature and society
Inequality is one of the main drivers of social tension. We show striking similarities between patterns of inequality between species abundances in nature and wealth in society. We demonstrate that in the absence of equalizing forces, such large inequality will arise from chance alone. While natural enemies have an equalizing effect in nature, inequality in societies can be suppressed by wealth-equalizing institutions. However, over the past millennium, such institutions have been weakened during periods of societal upscaling. Our analysis suggests that due to the very same mathematical...
31 days ago
Complexity Digest wrote a new blog post titled Cascading Failures as Continuous Phase-Space Transitions
In network systems, a local perturbation can amplify as it propagates, potentially leading to a large-scale cascading failure. Here we derive a continuous model to advance our understanding of cascading failures in power-grid networks. The model accounts for both the failure of transmission lines and the desynchronization of power generators and incorporates the transient dynamics between successive steps of the cascade. In this framework, we show that a cascade event is a phase-space transition from an equilibrium state with high energy to an equilibrium state with lower energy, which can be...
32 days ago
Complexity Digest wrote a new blog post titled Unveiling The Structure Of Information: The Fundamental Scale
Information has been a matter of intense study and discussion for the last century. The very nature of information, not a physical object, not an entirely abstract entity, has fostered this endless discussion which had some of its first episodes back in the 40’s with the arguments between Wiener and Shannon. Whether information is the effect produced by the received pattern of signals or the pattern of signals itself, the truth is that these patterns exist and we are devoted to deep into them to find a model for their structures and to establish useful comparisons among them. Source:...
32 days ago
Complexity Digest wrote a new blog post titled A (partially) interactive introduction to Systems Sciences
This eTextbook contains the system-scientific contents taught at the Institute of Systems Sciences, Innovation and Sustainability Research (SIS) at the University of Graz   Organically farmed by Manfred Füllsack Source: systems-sciences.uni-graz.at
33 days ago
Complexity Digest wrote a new blog post titled Correlations between human mobility and social interaction reveal general activity patterns
A day in the life of a person involves a broad range of activities which are common across many people. Going beyond diurnal cycles, a central question is: to what extent do individuals act according to patterns shared across an entire population? Here we investigate the interplay between different activity types, namely communication, motion, and physical proximity by analyzing data collected from smartphones distributed among 638 individuals. We explore two central questions: Which underlying principles govern the formation of the activity patterns? Are the patterns specific to each...
33 days ago