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Posts

March 31, 2014

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12:36 AM | Amazing approximation to e
Here’s an approximation to e by Richard Sabey that uses the digits 1 through 9 and is accurate to over a septillion digits. (A septillion is 1024.) MathWorld says that this approximation is accurate to 18457734525360901453873570 decimal digits. How could…Read more ›

March 29, 2014

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4:48 PM | Saturday Morning Videos: The Long Waits
The long waits   Joanne Milne's Implants are turned on and she hears for the first time   André Rieu - And The Waltz Goes On 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 Compressive Sensing or the Matrix Factorization Jungle and join the conversations on […]
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4:01 AM | Looking like you know what you’re doing
I’ve been in The Netherlands this week for a conference where I gave a talk on erasure coding. Last night after the conference, my host drove me and another speaker to Schiphol Airport. I’m staying in Amsterdam, but it was…Read more ›
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12:58 AM | Tested Mailbag: Slamming Tim Tams and 3D-Printed Wonders
No summary available for this post.

March 28, 2014

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7:28 PM | In Brief: Michael Abrash Joins Oculus
This morning, Oculus announced that Michael Abrash, who was most recently working on Valve's VR/AR efforts, has joined Oculus as the company's chief scientist. Prior to joining Valve, Abrash was a specialist in low-level assembly code, writing core parts of the Windows NT kernel at Microsoft and Quake 1's software renderer at id software. In the post announcing his hire, Abrash describes the creation of a Snow Crash-inspired Metaverse as a lifelong goal, and something he intends to work toward […]
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7:02 PM | Dimensionality reduction: Spectral Sparse Representation for Clustering and a survey
From The Princess Bride. A note on why the name of an algorithm is not the same as the implementation of that algorithm.  Last week, on top of doing a presentation at Paris IoT #5 on Making Sense of IoT data where I articulated, through three examples, that data sharing among sensors (and algorithms mentioned on Nuit Blanche) was really the only way to "produce business opportunities and save the world" (TM); I was also presenting a poster at JIONC (abstract is at From […]
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5:16 PM | The Problem with High-PPI Windows Display Scaling
High-resolution screens are getting more and more common. You can get a pretty good 27-inch 2560x1440 screen for $300, and cheap 4K displays are on the horizon--although you shouldn't actually buy one yet. And of course there's all those 13-, 14-, and 15-inch laptops with high-resolution screens, from 2560x1440 screen available on the Acer Aspire S7 and Toshiba Kirabook, to the 3200x1800 displays on the Samsung Ativ Book 9 Plus and Lenovo Yoga 2 Pro. And, of course, the Retina MacBook Pro, the […]
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4:50 PM | Dustcloud Brings Laser Six Shooters to a Live RPG #Mobile #Exergame
The DUSTCLOUD is a mobile, first-person shooter (FPS) game played using GPS tracking (+ZigBee communications) and electronic ray guns called DUSTERS. It’s a mobile  #exergame played... [[ This is a content summary only. Visit my website for full links, other content, and more! ]]
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4:00 PM | Makerbot Mystery Build: Failure is an Option
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3:49 PM | A Matchless Result
A famous algorithm, a new paper, a full correctness proof Vijay Vazirani is one of the world experts on algorithmic theory, and is especially known for his masterful book on approximation algorithms. Among many results in computational complexity, two have been Wikified: his theorem with Les Valiant on unique SAT, and the subsequent generalized Isolation […]
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2:29 PM | Beaulieu : que la ville devienne ville
Emile Zola et Guy de Maupassant s’étaient indignés devant le projet de tour Eiffel, Charles-Ferdinand Ramuz décriait la tour Bel-Air, mais à voir les oppositions au projet de tour de Beaulieu, la littérature semble à la peine ! Au-delà du gag sur la position symptomatique de ces quelques grands intellectuels à propos de la modernisation de leur environnement, notons que l’urbanisation est un phénomène qui catalyse […]
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11:15 AM | Citing Nuit Blanche
Logan Grosenick just sent me this most excellent photo and comment: Hi Igor, You might enjoy this (poorly taken) photo of David Donoho citing Nuit Blanche in a talk at Stanford. He did remark that this is not the correct way to do matrix-vector multiplication though, as the vector should be on the right :) Best,LoganCool! Although, for the sake of setting the record straight, I simply, for the life of me, cannot even draw those vectors/matrices with all their color and/or the nice looking […]
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10:00 AM | The Long Post of the Month
Here are some interesting preprints found on ArXiv: Compressed Wannier modes found from an $L_1$ regularized energy functionalFarzin Barekat, Ke Yin, Russel E. Caflisch, Stanley J. Osher, Rongjie Lai,Vidvuds Ozolins(Submitted on 26 Mar 2014)We propose a method for calculating Wannier functions of periodic solids directly from a modified variational principle for the energy, subject to the requirement that the Wannier functions are orthogonal to all their translations […]
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9:27 AM | Friday Links
1. Swanson Premimum RNA & DNA Don’t forget to read the reviews: “I noticed a difference right away. I have more energy, it has helped to lessen my appetite, and my skin took on a healthy glow. I recommend this product … Continue reading →
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4:59 AM | Tested In-Depth: Sony a7 Full-Frame Mirrorless Camera
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4:00 AM | Testing: Sony a7 Full-Frame Mirrorless Camera
For the past three weeks, I've been testing the Sony a7 camera. It's not a camera I bought, nor one provided by Sony--BorrowLenses was kind enough to give me a free rental to test both their service and the camera. And during testing, I've been carrying it around in my camera bag along with the Canon 6D. They're both full-frame cameras, but they couldn't be more different. While the 6D is a traditional DSLR, Sony's a7 is a mirrorless camera. It's more akin to Sony's Alpha NEX lineup of […]

March 27, 2014

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6:57 PM | Teaching Hollywood How To Hack
It took a police raid in 1987 to finally scare Dave Buchwald straight. Well, mostly straight. He wouldn't claim after to have completely reformed after the incident – remaining hatless, his words – but he certainly wasn't interested in ever going to jail.As a member of the hacker group Legion of Doom in his late teens, the raid was meant to scare him. It was a warning, a slap on the wrist. But while Buchwald was never actually charged, others weren't so lucky. The Chicago Tribune […]
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5:00 PM | The Motion Picture Camera: Past, Present and Future
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4:00 PM | The 3D Godzilla Movie That Almost Was
The next big remake of Godzilla is just around the corner, and the buzz from the trailer is pretty good so far. Many fans, myself included, are hoping that this is the Godzilla remake will finally get it right. Many of the right elements are there: nuclear testing, the monster towering over and knocking down skyscrapers (instead of weaving between them), and even hints at other monsters like Rodan. Things that the 1998 film never got. Another difference is that this will be a Godzilla movie […]
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2:47 PM | Race Yourself to a Fitter You With Google Glass (Mobile Fitness #Exergame)
Race Yourself integrates Google Glass information and presents an augmented-reality #exergame that will definitely make you see things that don't resist in reality. I'm wondering if you see... [[ This is a content summary only. Visit my website for full links, other content, and more! ]]
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2:33 PM | HODLR and george: Fast Direct Methods for Gaussian Processes and the Analysis of NASA Kepler Mission Data - implementation -
One of the co-author of the following preprint, Leslie Greengard, is one of the authors of the Fast Multipole Method, a matrix factorization method that changed many fields when it appeared. This factorization uses the low rankedness of blocks of dense matrices. I wonder if there are matrices where it would be useful to use a robust PCA on these blocks. Fast Direct Methods for Gaussian Processes and the Analysis of NASA Kepler Mission Data by Sivaram Ambikasaran, […]
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1:00 PM | A Landmark Episode of This Is Only a Test - 3/27/2014
Gary joins Will and Norm to celebrate a milestone, catch up on the last few months, and discuss the implications of Facebook buying Oculus. Enjoy!
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5:50 AM | Inside Adam Savage's Cave: What's in the Mailbag?
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12:42 AM | 10 Things You Should Know about DirectX 12
It’s about efficiency, not new featuresThe new DirectX will add a few new rendering features, but those new features aren’t as important as efficiency. Direct3D 12 has a thinner abstraction layer between the operating system and the hardware. Game developers will have more control over how their code talks to graphics hardware. Overhead is reduced substantially. Time for threads to complete has been reduced by 2-5x in some cases.Only Direct3D 12 has been discussedMost gamers tend to […]

March 26, 2014

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11:59 PM | Jamie Hyneman's Hitchhiking Survival Story
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8:56 PM | A Virtual Locksmith for Proteins
A Virtual Locksmith for Proteins26Mar2014The interaction between proteins and small molecule ligands is often described as akin to a lock and key. The complex, three-dimensional geometry of a protein’s structure creates selective and unique binding sites that are only accessible to certain molecules positioned in just the right way. To discover new drugs that can ward off a bacterial infection or silence a renegade ion channel, scientists have to first determine the protein’s […]
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7:00 PM | What Astronauts Do When There’s Nothing to Do
Whether it’s stoplights, your doctor’s office, or a popular restaurant on Saturday night, waiting is an inescapable aspect of modern life. For many of us, the pain of waiting is rarely much worse than being behind some indecisive couple at the Redbox kiosk. But even that trivial torment can be eased with time-killing apps on your phone. Now imagine that you have a few hours to kill before fulfilling your life’s greatest ambition, with practically nothing to do, all while […]
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6:00 PM | First Ring System Around Asteroid Chariklo found to have two rings
Observations at many sites in South America, including ESO’s La Silla Observatory, have made the surprise discovery that the remote asteroid Chariklo is surrounded by two dense and narrow rings. This is the smallest object by far found to have rings and only the fifth body in the Solar System — after the much larger…Read more →
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5:50 PM | CineGlobe 2014 : films et hackathon
CineGlobe est un festival international du film "inspiré par la science" qui a lieu au Globe de la Science et de l’Innovation du CERN. La quatrième édition a eu lieu la semaine passée. Plus de 3000 spectateurs dont votre serviteur y … Lire la suite →
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5:33 PM | Tensor time: Era of Big Data Processing: A New Approach via Tensor Networks and Tensor Decompositions,
From the first paper: This all shows that, compared to matrix decompositions,  Canonical Polyadic Decomposition (CPD) is unique under more natural and relaxed conditions, that only require the components to be “sufficiently different” and their number not unreasonably large. These conditions do not have a matrix counterpart, and are at the heart of tensor based signal separation How does this approach resolve current heuristics and attendant phase […]
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