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Rescooped by Hugo Perez from Public Datasets - Open Data -
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The brain’s #visual data-compression #algorithm

The brain’s #visual data-compression #algorithm | Amministrazione Trasparente | Scoop.it
Data compression in the brain: When the primary visual cortex processes sequences of complete images and images with missing elements — here vertical contours — it “subtracts” the images from each other (the brain computes the differences between...

Via Spaceweaver, luiy
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luiy's curator insight, December 26, 2013 8:29 PM

Researchers have assumed that visual information in the brain was transmitted almost in its entirety from its entry point, the primary visual cortex (V1).

 

“We intuitively assume that our visual system generates a continuous stream of images, just like a video camera,” said Dr. Dirk Jancke from the Institute for Neural Computation at Ruhr University.

 

“However, we have now demonstrated that the visual cortex suppresses redundant information and saves energy by frequently forwarding image differences,” similar to methods used for video data compression in communication technology. The study was published inCerebral Cortex (open access).

 

Using recordings in cat visual cortex, Jancke and associates recorded the neurons’ responses to natural image sequences such as vegetation, landscapes, and buildings. They created two versions of the images: a complete one, and one in which they had systematically removed vertical or horizontal contours.

 

If these individual images were presented at 33Hz (30 milliseconds per image), the neurons represented complete image information. But at 10Hz (100 milliseconds), the neurons represented only those elements that were new or missing, that is, image differences.

 

To monitor the dynamics of neuronal activities in the brain in the millisecond range, the scientists used voltage-dependent dyes. Those substances fluoresce when neurons receive electrical impulses and become active, measured across a surface of several square millimeters. The result is a temporally and spatially precise record of transmission processes within the neuronal network

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iPads in the classroom... a no-brainer

iPads in the classroom... a no-brainer | Amministrazione Trasparente | Scoop.it
How would you respond to a parent who is convinced that having an iPad in the classroom will make her child less smart? 'What's to stop him just looking up answers instead of using his brain?' she ...

Via Karen Stadler
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[PDF] Opening up Education


Via Gonzalo San Gil, PhD., juandoming, Edumorfosis
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Gonzalo San Gil, PhD.'s curator insight, July 9, 2013 5:32 AM

* #Open #Education for an Open #Society

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Dublin Declaration on Open Innovation

Dublin Declaration on Open Innovation | Amministrazione Trasparente | Scoop.it
La déclaration de Dublin sur l’innovation ouverte, que sera bientôt présentée à la Communauté européenne pour adoption comme approche stratégique de l’innovation.Ce document propose dix...
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Libro en libre descarga: Jóvenes en la era de la #hiperconectividad, tendencias, claves, miradas

Libro en libre descarga: Jóvenes en la era de la #hiperconectividad, tendencias, claves, miradas | Amministrazione Trasparente | Scoop.it

La mirada de padres y profesores parece mayoritariamente prisionera de una visión reactiva que les dificulta articular un pensamiento estratégico de aprovechamiento de las grandes potencialidades –no exentas de riesgos– que, desde un punto de vista cognitivo, emocional, moral y cívico, este nuevo contexto nos aporta. Sabemos que el cambio es inexorable; podemos aprovecharlo o sufrirlo.


Via A Petapouca, Pierre Levy, luiy
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Dr. Doris Molero's curator insight, May 20, 2013 5:50 AM

Jóvenes en la era de la hiperconectividad, tendencias, clave... 

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Open-Access Economics by Barry Eichengreen - Project Syndicate

Open-Access Economics by Barry Eichengreen - Project Syndicate | Amministrazione Trasparente | Scoop.it
The brouhaha over Carmen Reinhart’s and Kenneth Rogoff’s article “Growth in a Time of Debt” has raised troubling questions not only about the efficacy of austerity, but also about the reliability of economic analysis.
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Introducing: Project Open Data | The White House

Introducing: Project Open Data | The White House | Amministrazione Trasparente | Scoop.it
Technology evolves rapidly, and it can be challenging for policy and its implementation to evolve at the same pace.
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Big data for PR - Three ways it's changing the game. - Dachis Group

Big data for PR - Three ways it's changing the game. - Dachis Group | Amministrazione Trasparente | Scoop.it
Big data for PR – Three ways it’s changing the game. http://t.co/W9rlQtKdTj

Via Christophe Chambet-Falquet
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Big Data Requires New Thinking in Security - EdTech Magazine

Big Data Requires New Thinking in Security - EdTech Magazine | Amministrazione Trasparente | Scoop.it
Big Data Requires New Thinking in Security EdTech Magazine: Focus on Higher Education As the Big Data Working Group at the Cloud Security Alliance pointed out in a November report: "Security and privacy issues are magnified by velocity, volume and...

Via Christophe Chambet-Falquet
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Open data platforms: a tool to revolutionise governance Jay Naidoo

Open data platforms: a tool to revolutionise governance Jay Naidoo | Amministrazione Trasparente | Scoop.it
Having returned from speaking at a conference hosted by the World Bank President Jim Yong Kim on the issue of constituency feedback, I have re-learnt that important lesson: citizens always know better than the government or the market what works...

Via Ivan Begtin
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luiy's curator insight, April 5, 2013 12:42 PM
On a trip to Kenya recently, I spoke at the launch of the Code4Kenya initiative backed by government, the African Media Initiative, media companies, NGOs and the ICT sector as one of the first sustained attempts in Africa focused on making open data relevant to and used by citizens. Using exam and school location data, the NGO Twaweza has developed an education application “Find My School” that citizens can use to check relative performance of primary schools in the country. A fascinating portal provides parents with information on how individual schools in Kenya perform in national examinations. The underlying data is presented in a simplified way, visualised to be easily understood and shared. Now imagine what is possible if government, Section27, Equal Education and other NGOs in the education sector could build a smart partnership. Quality education, accountability, teacher performance and accountability would be visibly transformed in the interests of the students and our country. South Africa has nearly 60 million mobile phones. I have seen many examples of cost-effective software applications that empower citizens to give their feedback and use digital innovation to improve their lives. Using the pervasive mobile technology platform, we could avoid costly software applications and improve the performance of education. We only have to look at the way Africa, the fastest growing mobile market in the world, with over 600 million users, has adapted to technology. It is estimated that anywhere up to 20% of the Kenyan GDP is circulating on the back of mobile platforms like M-pesa, putting effective financial services into the hands of the previously unbanked. Over 17 million customers can deposit, withdraw and transfer money, pay bills, buy airtime from a network of agents that includes airtime resellers and retail outlets. Another example from Uganda is U-report, a free SMS service launched in 2011 with the support of UNICEF, which gives young Ugandans a voice on issues they care about. The system has over 145,000 active U-reporters, and is growing through partnership with the government, NGOs, youth organisations, faith-based organisations and private companies. Users register for free by texting “join” to 8500 on their mobile phone to become a U-reporter. Each week, U-reporters answer a free SMS poll or question on issues dealing with health, child protection, school, safe water, and more. Poll results are published in newspapers, reflected on radio, and placed directly into the hands of Members of Parliament. All SMSes are free, a vital element in removing the barriers to participation.
Rescooped by Hugo Perez from Humanities and their Algorithmic Revolution
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Computer recreates ancient languages

Computer recreates ancient languages | Amministrazione Trasparente | Scoop.it
Scientists develop a computer program that can reconstruct long-dead languages, making quick work of what would take human linguists far longer.

Via Intriguing Networks, Pierre Levy
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Intriguing Networks's curator insight, February 17, 2013 1:56 PM

How cool is that...Ancient Languages reconstructed online...

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Digital Humanities 2.0: A Report on Knowledge

Digital Humanities 2.0: A Report on Knowledge | Amministrazione Trasparente | Scoop.it
Thirty years ago, the French philosopher and literary theorist Jean-François Lyotard published a prescient “report on knowledge” called The Postmodern Condition.

Via Pierre Levy
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Scientometrics 2000 - 2013: e-Research, e-Social Science, Digital Humanities.

Scientometrics 2000 - 2013: e-Research, e-Social Science, Digital Humanities. | Amministrazione Trasparente | Scoop.it
e-Research Analysis 2013

 

#ivmooc #infovis #dh @luiy @katycns


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DNA motor 'walks' along nanotube, transports tiny particle

DNA motor 'walks' along nanotube, transports tiny particle | Amministrazione Trasparente | Scoop.it
(Phys.org) —Researchers have created a new type of molecular motor made of DNA and demonstrated its potential by using it to transport a nanoparticle along the length of a carbon nanotube.

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The Asymptotic Leap's curator insight, December 18, 2013 9:56 AM

Harnessing DNA to perform a mechanical task. Amazing! What are they going to do with DNA next? Use it as a computing tool? Oh, right, that's already being done: http://www.nextnature.net/2013/02/implanted-into-bacteria-synthetic-dna-functions-as-a-diagnostic-computer/

Rescooped by Hugo Perez from Valorisation de l'information
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Digital Age : What kind of revolution will we really live ?

"We live in the Digital Age, an age where mankind never had access to so much Information." Presentation of our Institute, DERI. More Information: http://www...

Via Christophe Chambet-Falquet
Hugo Perez's insight:

Network knowledge

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La révolution c’est maintenant

La révolution c’est maintenant | Amministrazione Trasparente | Scoop.it
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New algorithm maps cancer cells like nodes on a social network #SNA #health

New algorithm maps cancer cells like nodes on a social network #SNA #health | Amministrazione Trasparente | Scoop.it
A group of researchers from Columbia and Stanford have created a method for turning complex cellular datasets into visualizations that map the similarities between tens of thousands of cells within a tissue sample.

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luiy's curator insight, May 21, 2013 5:09 PM

The idea of representing large or complex data as a graph is nothing new, but it has taken on more prominence thanks to the rise of social media and those ubiquitous social graphs that map out who’s connected to whom. As we highlighted recently, however, graph analysis is becoming more popular outside the realm of social networks, and is being applied to problems that are more complex than just figuring out simple relationships within a network. In cases such as medical research, especially, graphs can provide a very effective way of seeing how potentially hundreds of thousands of data points spanning perhaps hundreds of variables are similar to each other.

 

That’s exactly what the team at Columbia and Stanford has done with a new algorithm that they’ve demonstrated within the realm of mass cytometry. According to a press release announcing the research (which is available via paid download at Nature Biotechnology):

“The method, called viSNE (visual interactive Stochastic Neighbor Embedding), is based on a sophisticated algorithm that translates high-dimensional data (e.g., a dataset that includes many different simultaneous measurements from single cells) into visual representations similar to two-dimensional ‘scatter plots’ ….

“The viSNE software can analyze measurements of dozens of molecular markers. In the two-dimensional maps that result, the distance between points represents the degree of similarity between single cells. The maps can reveal clearly defined groups of cells with distinct behaviors (e.g., drug resistance) even if they are only a tiny fraction of the total population. This should enable the design of ways to physically isolate and study these cell subpopulations in the laboratory.”

 

I assume they say similar to scatter plots because the algorithm is analyzing data across more than two dimensions, although the resulting chart is essentially the same (i.e., data points with similar characteristics will form clusters).

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Open Data Center Alliance - Proposal Engine Assistant Tool

Open Data Center Alliance - Proposal Engine Assistant Tool | Amministrazione Trasparente | Scoop.it
Open Data Center Alliance Proposal Engine Assistant Tool (PEAT) will help you to integrate ODCA usage model requirements into your corporate RFP issuance and make certain delivery of open cloud solutions based on ODCA requirements.

Via Jean-Pierre Laisne
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The Best Data Mining Tools You Can Use for Free in Your Company

The Best Data Mining Tools You Can Use for Free in Your Company | Amministrazione Trasparente | Scoop.it
Data mining or "Knowledge Discovery in Databases" is the  process of discovering patterns in large data sets with artificial intelligence, machine learning, statistics, and database systems.
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Alexander B. Howard: Obama's overlooked order to open government data

Alexander B. Howard: Obama's overlooked order to open government data | Amministrazione Trasparente | Scoop.it
Long before steam engines and turbines carried us swiftly over the oceans, a disabled sailor who could no longer serve on a ship found something to do ashore: aggregate the data from shipping logs. (Alexander B.
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55% of big data analytics projects are abandoned : Lack of skills with global vision

55% of big data analytics projects are abandoned : Lack of skills with global vision | Amministrazione Trasparente | Scoop.it
How to hire the right talent to overcome big data project failures.

Via Christophe Chambet-Falquet
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Bioengineers Build Open Source Language for Programming Cells - Wired

Bioengineers Build Open Source Language for Programming Cells - Wired | Amministrazione Trasparente | Scoop.it

Endy is the co-director of the International Open Facility Advancing Biotechnology — BIOFAB, for short — where he’s part of a team that’s developing a language that will use genetic data to actually program biological cells. That may seem like the stuff of science fiction, but the project is already underway, and the team intends to open source the language, so that other scientists can use it and modify it and perfect it.


Via jean lievens
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Unlocking the Value of Personal Data: From Collection to Usage

Our world is changing. It is complex, hyperconnected, and increasingly driven by insights derived from big data.1 And the rate of change shows no sign of slowing. Nor does the volume of data show any sign of shrinking. But, the economic and social value of big data does not come just from its quantity. It also comes from its quality – the ways in which individual bits of data can be interconnected to reveal new insights with the potential to transform business and society. Fully tapping that potential holds much promise, and much risk. By themselves, technology and data are neutral. It is their use that can both generate great value and create significant harm, sometimes simultaneously. This requires a rethink of traditional approaches to data governance, particularly a shift from focusing away from trying to control the data itself to focusing on the uses of data. It is up to the individuals and institutions of various societies to govern and decide how to unlock the value – both economic and social – and ensure suitable protections.


Via Complexity Digest, Ashish Umre, luiy
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Las humanidades digitales y la fusión entre arte y ciencia

Las humanidades digitales y la fusión entre arte y ciencia | Amministrazione Trasparente | Scoop.it

Via Pierre Levy
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Charlley Luz's comment, February 25, 2013 6:40 AM
Existe um "movimiento de las humanidades digitales que reconceptualiza a la era de la imprenta como un artefacto cultural que ya llegó a su ápice y está en reflujo." Será??
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Exploring the Significance of Digital Humanities for Philosophy

Exploring the Significance of Digital Humanities for Philosophy | Amministrazione Trasparente | Scoop.it
On February 23, I was honored to speak at an Invited Symposium on Digital Humanities at the American Philosophical Association's Central Division Meeting in New Orleans. Organized by Cameron Buckne...

Via Pierre Levy
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Pierre Levy's curator insight, February 27, 2013 9:42 AM

"One of the central questions that we explored was why philosophy seems to be less visibly engaged in digital humanities"

Miguel Gómez Parra's curator insight, March 2, 2013 7:58 AM

very important