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Noise enhances information transfer in hierarchical networks

Noise enhances information transfer in hierarchical networks | Content in Context | Scoop.it

We study the influence of noise on information transmission in the form of packages shipped between nodes of hierarchical networks. Numerical simulations are performed for artificial tree networks, scale-free Ravasz-Barabási networks as well for a real network formed by email addresses of former Enron employees. Two types of noise are considered. One is related to packet dynamics and is responsible for a random part of packets paths. The second one originates from random changes in initial network topology. We find that the information transfer can be enhanced by the noise. The system possesses optimal performance when both kinds of noise are tuned to specific values, this corresponds to the Stochastic Resonance phenomenon. There is a non-trivial synergy present for both noisy components. We found also that hierarchical networks built of nodes of various degrees are more efficient in information transfer than trees with a fixed branching factor.

 

Noise enhances information transfer in hierarchical networks

Agnieszka Czaplicka, Janusz A. Holyst & Peter M. A. Sloot

Scientific Reports 3, Article number: 1223 http://dx.doi.org/10.1038/srep01223


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The Next Phase of Social Business is the Collaborative Economy says Jeremiah Owyang of Altimeter

The Next Phase of Social Business is the Collaborative Economy says Jeremiah Owyang of Altimeter | Content in Context | Scoop.it
Jesse Soininen's insight:

The roles of economy as we know them now are slowly shifting. Ultimately the power of being co-creator (formerly known as the "customer") will have much lager effect than most of us are willing to anticipate now.

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Catherine Pascal's curator insight, March 2, 1:46 PM

Very interesting . Thanks !

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A Behind-the-Scenes Look at How Infographics Are Made | WIRED

A Behind-the-Scenes Look at How Infographics Are Made | WIRED | Content in Context | Scoop.it
It’s been said that we’re living in the golden age of data visualization. And why shouldn’t we be? Every move we make is potential fodder for a bar chart or line graph.
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Experts Give Their Thoughts on the Digital Trends of 2015

Experts Give Their Thoughts on the Digital Trends of 2015 | Content in Context | Scoop.it
Take a look at what the top industry experts have to say about how the digital marketing landscape will look in 2015
Via Pedro Da Silva, massimo facchinetti
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Marco Favero's curator insight, October 1, 4:52 PM

aggiungi la tua intuizione ...

Juliana Loh's curator insight, October 4, 3:51 PM

What's trending in the digital sphere? Will FB continue to dominate? Will mobile kill everything desktop? Who are investors supporting now? UK's mysocialagency has offered a few extrapolations. 'Carry on... carry on'...

 

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Introducing the Terp Toolkit and the Business Model Canvas

Introducing the Terp Toolkit and the Business Model Canvas | Content in Context | Scoop.it
“Everyday at the Dingman Center, students drop by, or send us emails, with questions on how to get started with their entrepreneurial ideas. We love connecting with UMD students and continuously loo...”
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5 Questions You Never Dared to Ask About the Business Model Canvas

5 Questions You Never Dared to Ask About the Business Model Canvas | Content in Context | Scoop.it
“Millions of users have successfully applied the Business Model Canvas both in the startup and corporate world. Here are five common questions that people don't always dare to ask us.”
Via Jeremy Hayes, massimo facchinetti
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Brigitte Roujol's curator insight, August 22, 10:04 AM

Avec un 3ème tome en préparation qui se concentre sur la proposition de valeur (un des 9 blocs du Business model canvas)

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Business Model Canvas Optimized for Lean Startup | Lean Canvas

Business Model Canvas Optimized for Lean Startup | Lean Canvas | Content in Context | Scoop.it
“The faster, more effective way to communicate your business model with internal and external stakeholders. Create your FREE Lean Canvas today. (Lean Canvas - a version of the Business Model Canvas - could be helpful for strategy discussions.”
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Lessons in Mass Collaboration (SSIR)

“Recent experience with government-convened hackathons has generated insights into the methods and instruments used to design effective mass collaboration efforts.”
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Howard Rheingold's curator insight, June 2, 5:22 PM

The application of mass collaboration to social problems has been explored through Hackathons. This brief, multi-author article from Stanford Social Innovation Review offers insights from government-sponsored hackathons in which a variety of private sphere organizations and individuals contributed, 

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Malcolm Cowley on the Four Stages of Writing: Lessons from the First Five Years of The Paris Review

Malcolm Cowley on the Four Stages of Writing: Lessons from the First Five Years of The Paris Review | Content in Context | Scoop.it

... Among his keen insights on the craft, synthesized from the interviews, is a theory of how the creative process works, outlining the four stages of writing: There would seem to be four stages in the composition of a story. First comes the germ of the story, then a period of more or less conscious meditation, then the first draft, and finally the revision, which may be simply ‘pencil work’ as John O’Hara calls it — that is, minor changes in wording — or may lead to writing several drafts and what amounts to a new work. Cowley illustrates each of the four stages with anecdotes from the interviewees....


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Do We Need Central Banks - An American Economist Speaks

Do We Need Central Banks: Steven Horwitz is an American economist of the Austrian School. Horwitz's professional work has been in the area of monetary theory...

Via Troy Mccomas (troy48)
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Rescooped by Jesse Soininen from Cooperation and collaboration
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Why your knowledge-sharing portal will probably not save the world | Kirsty Newman

Thanks Peter for this ... "The Internet is littered with abandoned knowledge-sharing portals, so what questions do you need to ask before jumping in and setting up a new one? Kirsty Newman lists four questions to ask before setting up your knowledge sharing one-stop shop." Comment: this prompted more questions than a simple comment allows me to phrase. In essence, I think what Kirsty says makes a lot of sense, also from the experience we have with setting up and maintaining learning networks. See for further details my blogpost at http://pbsloep.blogspot.com.au/2012/11/about-setting-up-learning-network.html
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David Garcia's comment, November 6, 2012 12:27 PM
Yes, a lot of questions. That I must answer, now that I have created a platform. Thank you.
Peter B. Sloep's comment, November 6, 2012 5:29 PM
Of course, don't get discouraged by these notes. It is just that the optimism that people will flock to a portal once it is there, is naive. But if a portal is the best choice, then so be it. My group built a portal for a group of public libraries in the Netherlands (www.biebkracht.nl) and it works, but also takes a lot of work to keep it working. Gilly Salmon's book on e-tivities contains some useful hints, but someone like Jenny Preece long time ago already hinted to this when she discussed lurking.
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10 Scoop.it Hacks You Might Have Been Overlooking

10 Scoop.it Hacks You Might Have Been Overlooking | Content in Context | Scoop.it
“Building a product is fun. Building a dynamic platform is even more fun. Did you know that Scoop.it has the best engineering team in the entire world, and that they put out a new release of the platform almost every week?In each of these releases, there are little new features and hacks that aren’t always announced. Some are data-backed and meant to help our team figure out what works and what doesn’t within the platform, but others are little gifts to you, the curators, and I’ve compiled a few so that you can all get up to date on what you might have been missing.”
Via Brian Yanish - MarketingHits.com
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Rescooped by Jesse Soininen from Mastering Facebook, Google+, Twitter
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How to Increase Engagement in Your Online Community

How to Increase Engagement in Your Online Community | Content in Context | Scoop.it
Connection is important in a community. However, for it to exist, you must first generate trust. Trust arises from your community’s engagement. Unless you give rise to such engagement on the basis of the credibility you earn with what you do and what you say, then there is no community, you have nothing.Engagement is everything
Via Brian Yanish - MarketingHits.com, massimo facchinetti
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Magento Migrate's curator insight, September 16, 9:06 AM

very interesting!

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10 sharing economy underdogs you should know

10 sharing economy underdogs you should know | Content in Context | Scoop.it
“There are hundreds of startups in the sharing economy and collaborative consumption industry. Here are 10 you might not have considered.”
Via jean lievens
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Rescooped by Jesse Soininen from Homo Agilis (Collective Intelligence, Agility and Sustainability : The Future is already here)
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Agile is eating the world

Agile is eating the world | Content in Context | Scoop.it
“As agile become mainstream and software is eating our world, Agile practices are not only shaping how we build software but also how we manage entire organizations.”
Via Claude Emond
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Claude Emond's curator insight, October 17, 11:56 AM

Topic curated on scoop.it : « As agile become mainstream and software is eating our world, Agile practices are not only shaping how we build software but also how we manage entire organizations.»

Rescooped by Jesse Soininen from Digital Delights - Digital Tribes
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The History of English - How the English language went from an obscure Germanic dialect to a global language

The History of English - How the English language went from an obscure Germanic dialect to a global language | Content in Context | Scoop.it
“The History of English - How the English language went from an obscure Germanic dialect to a global language”
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Alison Rostetter's curator insight, October 11, 4:05 PM

One of two scoops on how English has developed over the centuries.

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Logic Trees for Inclusive Discourse - P2P Foundation

Logic Trees for Inclusive Discourse - P2P Foundation | Content in Context | Scoop.it
“"Making political decision-making truly inclusive is always challenging. Diversity of concerns and perspectives to be considered is a significant driver of complexity. How much inclusiveness can be achieved is limited by how much diversity can be integrated without losing the ability to organize constructive discourses that lead to adequate decisions, and that achieve this within a reasonable timeframe. I propose that “logic tree” methods of the so-called “Theory of Constraints” are highly promising as a means of managing this complexity in a logically and socially sound and inclusive manner. Mapping concerns by such logic trees allows to identify power structures (which turn up as root causes for concerns), conflicts, and to discover and discuss innovative ideas. The application of these methods to Internet governance and sustainable development objectives should be tried and researched."”
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Rescooped by Jesse Soininen from Business Strategy and Business Intelligence Trends
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Ecosystem Guide: The 12 Players of the Collaborative Economy | Web Strategy by Jeremiah Owyang | Digital Business

Ecosystem Guide: The 12 Players of the Collaborative Economy | Web Strategy by Jeremiah Owyang | Digital Business | Content in Context | Scoop.it

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Rescooped by Jesse Soininen from Business Strategy and Business Intelligence Trends
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Reinvent Your Business Model or Die

Reinvent Your Business Model or Die | Content in Context | Scoop.it
“One of the key components of transformation and innovation is the business model, and since the ability of companies to transform and reinvent themselves is crucial to their lifeline, I went straight to the source....”
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Lessons in Mass Collaboration (SSIR)

“Recent experience with government-convened hackathons has generated insights into the methods and instruments used to design effective mass collaboration efforts.”
Via Howard Rheingold
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Howard Rheingold's curator insight, June 2, 5:22 PM

The application of mass collaboration to social problems has been explored through Hackathons. This brief, multi-author article from Stanford Social Innovation Review offers insights from government-sponsored hackathons in which a variety of private sphere organizations and individuals contributed, 

Rescooped by Jesse Soininen from Peer2Politics
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Give Social Entrepreneurs a Bigger Place at the Table - Huffington Post

Give Social Entrepreneurs a Bigger Place at the Table - Huffington Post | Content in Context | Scoop.it
"Social Entrepreneurs are role models, not only for young entrepreneurs, but, more importantly, for businesses like us. We can't address in our business model many important societal issues if we don't link up firmly with the creativity and passion and purpose-driven models of social entrepreneurs."

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Rescooped by Jesse Soininen from Bounded Rationality and Beyond
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Controlling collective dynamics in complex, minority-game resource-allocation systems

Resource allocation takes place in various kinds of real-world complex systems, such as the traffic systems, social services institutions or organizations, or even the ecosystems. The fundamental principle underlying complex resource-allocation dynamics is Boolean interactions associated with minority games, as resources are generally limited and agents tend to choose the least used resource based on available information. A common but harmful dynamical behavior in resource-allocation systems is herding, where there are time intervals during which a large majority of the agents compete for a few resources, leaving many other resources unused. Ac- companying the herd behavior is thus strong fluctuations with time in the number of resources being used. In this paper, we articulate and establish that an intuitive control strategy, namely pinning control, is effective at harnessing the herding dynamics. In particular, by fixing the choices of resources for a few agents while leaving majority of the agents free, herding can be eliminated completely. Our investigation is systematic in that we consider random and targeted pinning and a variety of network topologies, and we carry out a comprehensive analysis in the framework of mean-field theory to understand the working of control. The basic philosophy is then that, when a few agents waive their freedom to choose resources by receiving sufficient incentives, majority of the agents benefit in that they will make fair, efficient, and effective use of the available resources. Our work represents a basic and general framework to address the fundamental issue of fluctuations in complex dynamical systems with significant applications to social, economical and political systems.


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Zizek! Full Documentary - YouTube

"Zizek!" is a feature documentary exploring the eccentric personality and esoteric work of the "wild man of theory": the eminent Slovenian philosopher Slavoj... (Philosopher Slavoj Zizek is simply amazing!

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Rescooped by Jesse Soininen from Cooperation and collaboration
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Social Curation Is The Future of Successful Community Engagement

Social Curation Is The Future of Successful Community Engagement | Content in Context | Scoop.it
What is Social Curation? Social curation involves aggregating, organizing and sharing content created by others to add con...
Via Robin Good, David Wilcox
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Joyce Valenza's curator insight, March 6, 2013 7:42 AM

add your insight...

 

Benilda Pacheco Beretta's curator insight, March 10, 2013 3:24 AM

add your insight...

 
Dawn Adams Miller's curator insight, April 13, 2013 11:22 AM

This is definitely a major role for a community manager which is why I love learning about these two topics: community management and curation.  They are inseparable.  I think this is what makes the difference between a community that has members and a community that has ACTIVE members, which, of course, is the POINT!  Enjoy!

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PIERRE LEVY: "Toward a Reflexive Collective Intelligence" • Colorado College

PIERRE LEVY: "Toward a Reflexive Collective Intelligence" • Colorado College | Content in Context | Scoop.it

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Pierre Levy's curator insight, September 16, 2:45 PM

My talk at Colorado College!

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The Global Workforce Crisis: $10 Trillion at Risk

The Global Workforce Crisis: $10 Trillion at Risk | Content in Context | Scoop.it
Over the past few years, BCG examined workforce supply-and-demand dynamics in 25 major economies (including the G20) through 2030.1 Today, these countries collectively account for more than 2 billion economically active people, or around 65 percent of the world’s population—and more than 80 percent of total world GDP. This report highlights the impending labor shortages and surpluses and their implications for future growth. Trends across the 25 economies we studied are alarming: an equilibrium in supply and demand is rapidly becoming the exception, not the norm. Between 2020 and 2030, we project significant worldwide labor-force imbalances—shortfalls, in particular. One significant implication is the potential aggregate value of GDP squandered, because either these nations cannot fill the jobs available or they cannot create enough jobs for the workers they have. This represents a stunning $10 trillion—around 60 percent of U.S. GDP and more than 10 percent of total world GDP (according to the latest available 2013 figures). This report, the first of a series on this topic, summarizes the findings of The Boston Consulting Group’s extensive research on global talent risk and outlines basic solutions to mitigate these imbalances. The series as a whole will describe the consequences of labor imbalances for businesses and governments and offer further remedies to help mitigate them.
Via Andrée Laforge, Denis Pennel
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Andrée Laforge's curator insight, September 12, 8:54 AM

Une super étude du Boston Group sur les tendances de la main-d'oeuvre jusqu'en 2030. Et bien, c'est pas rose!

 

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Symbolic regression of generative network models

Symbolic regression of generative network models | Content in Context | Scoop.it
Networks are a powerful abstraction with applicability to a variety of scientific fields. Models explaining their morphology and growth processes permit a wide range of phenomena to be more systematically analysed and understood. At the same time, creating such models is often challenging and requires insights that may be counter-intuitive. Yet there currently exists no general method to arrive at better models. We have developed an approach to automatically detect realistic decentralised network growth models from empirical data, employing a machine learning technique inspired by natural selection and defining a unified formalism to describe such models as computer programs. As the proposed method is completely general and does not assume any pre-existing models, it can be applied “out of the box” to any given network. To validate our approach empirically, we systematically rediscover pre-defined growth laws underlying several canonical network generation models and credible laws for diverse real-world networks. We were able to find programs that are simple enough to lead to an actual understanding of the mechanisms proposed, namely for a simple brain and a social network.Symbolic regression of generative network models • Telmo Menezes & Camille RothScientific Reports 4, Article number: 6284 http://dx.doi.org/10.1038/srep06284See Also: https://github.com/telmomenezes/synthetic
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Flora Moon's curator insight, September 14, 2:13 PM

Big data meets systems and can potentially shines a light on system dynamics....