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Posts

April 19, 2014

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9:04 AM | Les requins sont-ils attirés par le sang ?
Dans le quiz sur les poissons (d'avril ou pas), une majorité des participants a répondu "vrai" à la question 6: "Les requins sont attirés par une goutte de sang humain à des kilomètres". Or la réponse, ou plutôt ma réponse puisque … Lire la suite →
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5:00 AM | Saturday Morning Video: Learning Visual Representations at Scale, Vincent Vanhoucke
Learning Visual Representations at Scale by Vincent Vanhoucke (another presentation that features Deep ConvNets; "Astounding" baseline for vision )in the meantime, ccv 0.6 open sources near state-of-the-art image classifier under Creative Commons Join the CompressiveSensing subreddit or the Google+ Community and post there ! Liked this entry ? subscribe to Nuit Blanche's feed, there's more where that came from. You can also subscribe to Nuit Blanche by Email, explore the Big Picture in […]

April 18, 2014

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9:36 PM | danah boyd, Randall Munro, and netizens.
danah boyd, author of 'It's Complicated' just gave a tech talk at Google. Her book has been in the news a lot lately, so I'll skip the details (although Facebook ought to be at least slightly worried).But what I enjoyed the most about her talk was the feeling that I was listening to a true netizen: someone who lives and breathes on the internet, understands (and has helped build) modern technology extremely well (she is a computer scientist as well as an ethnographer), and is able to deliver a […]
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9:03 PM | MorpHex MKII - A Badass Looking Hexpod Ball Robot
No summary available for this post.
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7:57 PM | Quote o' the day: pitfalls
...we do not yet have the perspective of sufficient time to get over the prejudices and fashionabilities that influence our everyday behavior. We also tend to discount or oversimplify historical, sociological, and psychological aspects. We are too operational and too win-lose oriented. We come out simplistic and opinionated. Leland Allen, quoted in Polywater, by Felix Franks.
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5:57 PM | Modernity II
Modernity II An obvious missing addition in my previous Modernity post was (as pointed out by Franklin Chen in the comments) was LaTeX, developed in the early 1980s as a set of macros for TeX (released in 1978). By the way, if you prefer … Continue reading →
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2:12 PM | Mes 10 livres préférés (#MyTopTenBooks)
Découvert sur Freakonometrics une chaîne d'articles sur nos 10 bouquins préférés, alors voici une sélection des miens. Cent ans de solitude Au moment où j'hésitais à ne mentionner que des livres en rapport avec la science, j'apprends le décès de Gabriel García … Lire la suite →
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12:16 PM | You are not paying attention if...
you believe speckle is noise,your internet of things gadget does not have a camera,your business depends on making sense of camera data and you don't know about OverFeat, Caffe or ccv,you believe compressive sensing is niche,you believe that random projections are inferior to PCA,you believe the name of an implementation does the same as the name of the algorithmyou believe sensor design has little to do with Machine Learning.... TBC Join the CompressiveSensing subreddit or the Google+ […]
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5:00 AM | Privacy Tradeoffs in Predictive Analytics
Here is something new in the privacy game that relies on the fact that most matrix factorization in the recommender system business are low rank. From the paper:To the best of our knowledge, we are the rst to take into account the data disclosed by an analyst in the above privacy-accuracy tradeo , and to establish the optimality of a combined disclosure, obfuscation, and prediction scheme. Our proofs rely on the modeling assumption that is the cornerstone of matrix factorization techniques and […]
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3:07 AM | Virus one billion times
Just released on YouTube: video of Drew Berry’s awesome Virus one billion times installation, created for Melbourne’s White Night. Drew gave a short talk on this work at VIZBI 2014.
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1:30 AM | Rudyard Kipling and applied math
This evening something reminded me of the following line from Rudyard Kipling’s famous poem If: … If all men count with you, but none too much … It would be good career advice for a mathematician to say “Let all…Read more ›

April 17, 2014

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10:46 PM | Kepler Finds First Earth-Sized Exoplanet in Habitable Zone
Over the last ten years, astronomers have discovered hundreds of exoplanets using a handful of techniques, but until now, most of those planets are either outside the habitable zone or are much larger than earth--think gas giants. A newly discovered planet, Kepler-186f, is the first planet in the habitable zone, the orbits around a star where formation of liquid water is possbile, of a comparable size to Earth.We don't know much about the planet, but Kepler-186f is about 500 light years away, […]
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10:00 PM | Robust Subspace Recovery via Dual Sparsity Pursuit
The implementation for this solver is not available, here is another phase diagram for the Robust PCA decomposition. the previous one is featured in the Advanced Matrix Factorization Jungle page from Bilinear Generalized Approximate Message Passing by Jason T. Parker, Philip Schniter, Volkan Cevher. One wonders how the two diagrams fit with each other. Here is the paper: Robust Subspace Recovery via Dual Sparsity Pursuit by Xiao Bian, Hamid KrimSuccessful applications […]
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8:56 PM | Tip of the Day: Making Dialing Into Conference Calls Painless
If you regularly dial into conference bridges you'll love this tip. Conference bridges are services that you dial into and then enter a numerical code to connect to your conference call. Today I learned that you can put the conference line's phone number and the access code for your call into the location field of your calendar event, separate the two with a semi-colon, and iOS handles it smartly.When you tap the phone number to dial it from the iOS meeting, it carries over the access code as […]
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5:37 PM | STOC 2014 announcement.
Howard Karloff writes in to remind everyone that the STOC 2014 early registration deadline is coming up soon (Apr 30 !). Please make sure to register early and often (ok maybe not the last part). There will be tutorials ! workshops ! posters ! papers ! and an off-off-Broadway production of Let It Go, a tragicomic musical about Dick Lipton's doomed effort to stop working on proving P = NP.At least a constant fraction of the above statements are true.And if you are still unconvinced, here's a […]
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3:38 PM | Episode 253 - Listener's Choice - 4/17/2014
This week, Will is joined by very special guest Dave Snider to discuss a wide range of topics selected by the community, including our latest woodworking projects, dragons, mischief, Snoop Dogg, and the viability of kilts. All that and a whole lot more in this week's episode. Enjoy!
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3:00 PM | A cross-section of the Universe
claimtoken-5350fc5decc9eAn image of a galaxy cluster taken by the NASA/ESA Hubble Space Telescope gives a remarkable cross-section of the Universe, showing objects at different distances and stages in cosmic history. They range from cosmic near neighbours to objects seen in the early years of the Universe. The 14-hour exposure shows objects around a billion times…Read more →
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7:18 AM | Jamie Hyneman's High-Pressure Air Gun
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5:00 AM | Non-invasive real-time imaging through scattering layers and around corners via speckle correlations
Wow !Several themes mentioned in this blog are colliding in the following preprint. First thanks to the Moore's law we have the ability to do high resolution imagery with smartphone cameras like the Lumia 1020. Then there is this imaging with nature theme and then there is the sparse phase retrieval problem. I say sparse but there is no connection to that in this preprint and much like FROG (see here and here also), time will tell. What is so interesting here is that there is no need to […]
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4:45 AM | The More Variables, the Better?
Ideas from algebraic geometry and arithmetic complexity Hyman Bass is a professor of both mathematics and mathematics education at the University of Michigan, after a long and storied career at Columbia University. He was one of the first generation of mathematicians to investigate K-theory, and gave what is now the recognized definition of the first […]

April 16, 2014

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2:36 PM | How To Get Into Hobby RC: Upgrading Your Car and Batteries
In my previous article, I talked about my experience with the ECX Ruckus monster truck and how it brought me back up to speed on current RC technology. One of the challenges that I faced with the Ruckus was that I thought it was too fast for my son to handle. He spent some time driving a slower car and soon had the skills necessary for the Ruckus. That gateway car was a Duratrax Evader BX buggy (which is no longer produced). It was a perfect starter car for him. It was slow enough to keep him […]
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2:00 PM | A Tantalising Glimpse Into Google X
Fast Company got to take a rare peek inside Google's secretive moonshot division, Google X. The Google X team is tasked with finding technologies that will literally change the world, but have a very low probability of success. Previous X projects include Google's self-driving cars, Project Loon balloons to provide Internet access in the developing world, and even Google Glass. The article is worth a read, but the key is that the group eschews the incremental improvement that is characteristic […]
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1:00 PM | The Science of Caffeine
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11:58 AM | Sloan Foundation Grant Helps Globus Democratize Data Science
Sloan Foundation Grant Helps Globus Democratize Data Science16Apr2014The explosion of data across disciplines has opened up vast new possibilities for scientific discovery. But many researchers do not yet have access to the advanced infrastructure needed to work with Big Data and realize its full potential. With new support from the Alfred P. Sloan Foundation, Globus can expand its mission to bring the advanced data management infrastructure used by massive science […]
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11:00 AM | A Study in Scarlet
This new image from ESO’s La Silla Observatory in Chile reveals a cloud of hydrogen called Gum 41. In the middle of this little-known nebula, brilliant hot young stars are giving off energetic radiation that causes the surrounding hydrogen to glow with a characteristic red hue. This area of the southern sky, in the constellation…Read more →
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8:49 AM | Modernity
Modernity The Bourne shell was first released in 1977 (37 years ago). The C Programming Language book was published in 1978 (36 years ago), describing the C language which had been out for a few years. Python was first released in 1991 (23 years … Continue reading →
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8:27 AM | 3000th post. Wow !
So, this is the 3000th published post. wow! While there is nothing magic about this number, here is some perspective: it's about ten times 300 posts, or roughly the equivalent of 10 years of constant weekly posting and then some week-ends. I went from being ignorant about many things to having the blog mentioned in different quarters of the academic world. Let's not forget that one of the realities of the relative success of Nuit Blanche stems from the broken publishing model. On top of not […]
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7:28 AM | 11 Essential Tweaks for Your New Samsung Galaxy S5
The Galaxy S5 is finally here, debuting new hardware and software from Samsung. Even those who have owned a Galaxy phone before are sure to find a few unexpected treats in this device. Samsung has traditionally engineered one of the more extreme Android skins, but TouchWiz has come a long way since its early days of iPhone cloning.There are some excellent features you'll want to take advantage of, and some you will want to hide as best you can. Let's get your Galaxy S5 in shape!Kill Bundled […]
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6:22 AM | Tested In-Depth: Amazon Fire TV Streaming Media Player
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12:53 AM | Tested Explains: How Google's Project Ara Smartphone Works
Project Ara is real, and Google has its fingers on the pulse of the technologies required to make modular smartphones a reality. Given the overwhelming public response to the Phonebloks concept, it's something that users seem to want, too. But whether or not Project Ara modular phones have a future in the smartphone marketplace will largely depend on whether or not there's a strong hardware ecosystem to support it. The custom PC market wouldn't have flourished a decade ago if component […]
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