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Redefining optimal « It Takes 30
When you’re trying to use models to probe the behavior of a complex biological system, there usually comes a point where you have to “fit parameters”. This happens because the model is trying to build up a macroscopic picture from underlying features that may be impossible to measure. For example, in the case of tumor growth, your model might use local nutrient density as a parameter that affects the rate of the growth of individual cells in the tumor and therefore the growth of the tumor overall. But nutrient density might not be possible to measure, and so you would have to use experimental data on something that’s easier to measure (e.g. how rapidly tumors grow) to deduce how nutrient density changes across the tumor.
Après l'open-data la nouvelle tendance tout droit venue des US sera-t-elle le « big data » ? D’un récent voyage dans la Silicon Valley (merci aux amis du Orange Institute ), je rentre avec une conviction : tout ce que nous connaissions du web va changer à nouveau avec le phénomène des big data . Il pose à nouveau, sur des bases différentes, presque toutes les questions liées à la transformation numérique. En 2008, l’humanité a déversé 480 milliards de Gigabytes sur Internet. En 2010, ce furent 800 milliards de Gygabytes, soit, comme l’a dit un jour Eric Schmidt, plus que la totalité de ce que l’humanité avait écrit, imprimé, gravé, filmé ou enregistré de sa naissance jusqu’en 2003. Ces données ne sont pas toutes des œuvres.
Big Data : faire du sens à grande échelle » OWNI, News, Augmented
Depuis le 28 novembre et jusqu’au 9 décembre se tient la 17ème Conférence des Nations Unies sur changement climatique , à Durban. Et pour l’occasion CNN International a lancé le CNN Ecosphere Project , un dispositif numérique en temps réel qui agrège les tweets publiés avec le hashtag #cop17. Une visualisation magnifique des conversations twitter.
CNN lance Ecosphere Project, un magnifique dispositif de visualisation de conversation twitter | Digital Hunter
Revealed – the capitalist network that runs the world - physics-math - 19 October 2011 - New Scientist
AS PROTESTS against financial power sweep the world this week, science may have confirmed the protesters' worst fears. An analysis of the relationships between 43,000 transnational corporations has identified a relatively small group of companies , mainly banks, with disproportionate power over the global economy. The study's assumptions have attracted some criticism, but complex systems analysts contacted by New Scientist say it is a unique effort to untangle control in the global economy. Pushing the analysis further, they say, could help to identify ways of making global capitalism more stable. The idea that a few bankers control a large chunk of the global economy might not seem like news to New York's Occupy Wall Street movement and protesters elsewhere ( see photo ).
Présenter les volumes d’importations et d’exportations des pays du globe, depuis 1962 : complexe ? Un peu, mais the Observatory of Economic complexity (l’Observatoire de la complexité économique), ne recule pas devant la difficulté, comme son nom l’indique. Son but est de “cartographier les chemins vers la prospérité”.
Les data en forme » OWNI, News, Augmented
Visualization of the Week: 7 billion humans - O'Reilly Radar
The world population is expected to hit seven billion some time in the next few days. The United Nations has a countdown clock , of sorts, with a counter ticking steadily forward. The Guardian , along with the Spanish design house Bestario's , has taken data from the U.N. to create a visualization of changes in global population . The visualization depicts population past, present and future — namely, numbers from 1950, from 2010, and 2100. You can click on countries to view their individual trajectories as well as countries with comparable growth patterns.Wrapping your brain around data online can be challenging, especially when dealing with huge volumes of information. And trying to find related content can also be difficult, depending on what data you’re looking for. But data visualizations can make all of that much easier, allowing you to see the concepts that you’re learning about in a more interesting, and often more useful manner. Below are 50 of the best data visualizations and tools for creating your own visualizations out there, covering everything from Digg activity to network connectivity to what’s currently happening on Twitter. Liveplasma is a music and movie visualization app that aims to help you discover other musicians or movies you might enjoy. Type in the name of a band, artist, movie, director or actor and liveplasma will show you related people, bands or movies.
50 Great Examples of Data Visualization | Webdesigner Depot
Historical Timeline of Computable Knowledge: 1900-1959
Paul Otlet and Henri La Fontaine collected twelve million index cards of information, planning to create a world center for answering factual questions. Turing shows that any reasonable computation can be done by programming a fixed universal machine—and then speculated that such a machine could emulate the brain. The arrival of digital electronic computers provides the mechanism by which computations of all kinds can be automated with increasing efficiency. Computational linguistics puts the concepts of grammar into an algorithmic form that promises to automate processes of language understanding.
Junk Charts
Dona Wong, whose graphics book I reviewed two years ago ( link ), has recently joined the New York Fed to lead an effort to visualize data. This is exciting because consumers are unlikely to learn anything from Excel spreadsheets, HTML tables, etc. which are the typical formats of public data. One of their efforts is visualization of mortgage delinquency data in the Tri-state and Long Island regions ( link ). This animation reminds me of the CDC obesity map, to which I gave a positive review in 2005 ( link ). This type of chart is great for revealing the evolution of a metric over time and over space. The sliding control is a very nice extra touch.
Architectural drawings contain graphical information explained in more detail in the specifications. For example, waterproofing is just a line on the drawings designated “WP” but up to 50 pages in the specifications. Specifications became necessary when buildings got more complex, the entirety of the intended work results could not be captured in drawings without the drawings becoming too cluttered. As a result architects sometimes ask “What does that line mean?”.
Accuracy&Aesthetics | BUILDING CONSENSUS
By Andy Woodruff on 23 January 2012 This is a quick plug for a new publication being put together by NACIS (the North American Cartographic Information Society, also known as the most awesome bunch of cartographers anywhere): the Atlas of Design , which will feature “cartography at its most beautiful, its cleverest, its sharpest, and its most intriguing.” It’ll be the best coffee table book ever! A couple of our favorite cartographers are out there now rounding up work from all of our other favorite cartographers.
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Yesterday a bunch of friends were tweeting about the new LinkedIn InMaps web app (part of LinkedIn Labs ), so I had to check it out for myself. Wow, wow, wow! InMaps are data visualizations of your professional network , based on LinkedIn connections, with you as the center node. I’ve been waiting years for LinkedIn to finally get its act together and start offering up analytics based on all the data we willingly store within it — but rarely make use of.