Posts

December 13, 2014

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2:39 PM | Why assign two characters to the same symbol?
Unicode often counts the same symbol (glyph) as two or more different characters. For example, Ω is U+03A9 when it represents the Greek letter omega and U+2126 when it represents Ohms, the unit of electrical resistance. Similarly, M is U+004D when it’s used as a Latin letter but U+216F when it’s used as the Roman […]

December 12, 2014

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9:31 PM | Hamming's time: Scientific Discovery Enabled by Compressive Sensing and related fields
I was recently asked an interesting yet challenging question. I have two or three answers and also feel the question is somewhat unfair but it picked my interest. The question was: Has compressive sensing helped in making discoveries in the realm of general science (as opposed to computer science, signal processing, better solvers, etc...) ?It could be better reframed as:Has any of the compressive sensing pipeline tools (measurement matrices, randomization, L1 or better solvers) allowed […]
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6:47 PM | Adam's Tour Diaries #16: Myyyyyyy Kinda Town
Dec. 6, 2014: Man, oh, man. Chicago is the best. Pulled in around 7 a.m. Woke up and headed over to my good friend and never-not-fun-to-talk-to Peter Sagal’s house, where he made me breakfast while we discussed Kubrick, film, radio, and a few dozen other topics over the course of a couple hours.Our bus was parked right under the El.This is awesome. Spotted on the street in Chicago. I think it’s for when the power goes out? I guess a stop sign CAN be stopped.Myth Busted.Then Peter […]
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5:00 PM | Print the Mystery Object: Do Do Do Do, Do Doo, Doot
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11:17 AM | CS50x: Introduction to Computer Science (Harvard/edX)
CS50x is Harvard College’s introduction to the intellectual enterprises of computer science and the art of programming for majors and non-majors alike, with or without prior programming experience. An entry-level course taught by David J. Malan, CS50x teaches students how to think algorithmically and solve problems efficiently. Topics include abstraction, algorithms, data structures, encapsulation, resource… Read more → The post CS50x: Introduction to Computer Science […]
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8:00 AM | 12 Days of Tested Christmas: Anker 5-Port USB Charger
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6:18 AM | Accountability in data mining
For a while now, I've been thinking about the endgame in data mining. Or more precisely, about a world where everything is being mined for all kinds of patterns, and the contours of our life are shaped by the patterns learnt about us.We're not too far from that world right now - especially if you use intelligent mail filtering, or get your news through social media. And when you live in such a world, the question is not "how do I find patterns in data", but ratherHow can I trust the patterns […]
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1:12 AM | Rainpocalypse 2014 - This Is Only a Test #281 - 12/11/2014
Will and Norm sit out the great San Francisco rain storm of 2014 by taking your Qs and turning them into As in another rainy day edition of This Is Only a Test. Enjoy!

December 11, 2014

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10:22 PM | Reproducibility-as-a-service: can the cloud make it real?
Kenji Takeda, Solutions Architect and Technical Manager with Microsoft Research, has written a blog post on Recomputability 2014, as well as discussing some of the issues (and potential opportunities) for reproducibility in computational science we have outlined in our joint paper (including a quote from me): This is an exciting area of research and one […]
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7:16 PM | Bits to Atoms: Testing the Form 1+ SLA Desktop 3D Printer
3D printing keeps getting bigger, better and more accessible every day--you can now buy a MakerBot or Dremel 3D printer at Home Depot. Plastic filament printers are, by far, the most common type you will find at makerspaces and home garages, but high-resolution resin printers are slowly creeping into the mainstream. One of the most promising, is the Formlabs Form 1+ SLA printer developed by a team from the MIT Media Lab. I had the chance to put a Form 1+ through it’s paces for two months […]
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6:09 PM | PES Films' "Submarine Sandwich" Stop-Motion Short
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5:00 PM | In Brief: Know Your Star Wars Action Figure Variants
Even though I was too young to buy the original Kenner Star Wars action figures, I can appreciate the fervor and fandom around collecting these iconic toys. So many Star Wars fans who grew up in the 70s have stories memories about their first or favorite Kenner figures, or the coveted ones they were never allowed to buy. My visit to Steve Sansweet's Rancho Obi-Wan almost two years ago now was the first time I was exposed to the world of Kenner rarities--the variants of figures most sought after […]
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4:30 PM | Job: One year postdoc in the area of Applied Nonlinear Fourier Analysis, TU Delft
Sander Whals just sent the following:  Dear Igor,Many thanks for maintaining a highly interesting and informative blog!I have an opening for a one-year postdoc in the area of applied nonlinear Fourier analysis. I do not think that you have covered this topic before, but I think that it may be of interest to your readers. (A very nice recent introduction can be found at http://arxiv.org/abs/1202.3653 . I am mainly working on fast nonlinear Fourier transforms: […]
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4:00 PM | Adam Savage's One Day Builds: Barbarella's Space Rifle
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2:57 PM | CSjobs: Multiple positions @ BASP Edinburgh
Yves Wiaux resent me the following ad (with more information). Hi Igor May I ask you to post the job advert below on nuit blanche?Thanks a lot in advanceRegardsYvesHere is the annoucement and page:Following the award of a £2M UK research project on 'compressive imaging in astronomy and medicine’ I am recruiting 3 postdoctoral researchers as well as PhD students to join the BASP group in Edinburgh.The postdoc positions are distributed across compressive imaging […]
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11:27 AM | A proof that the Halting Problem is undecidable
SCOOPING THE LOOP SNOOPER A proof that the Halting Problem is undecidable Geoffrey K. Pullum (School of Philosophy, Psychology and Language Sciences, University of Edinburgh) No general procedure for bug checks will do. Now, I won’t just assert that, I’ll prove it to you. I will prove that although you might work till you drop,… Read more → The post A proof that the Halting Problem is undecidable appeared first on Tuxar.uk.
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7:45 AM | 12 Days of Tested Christmas: Tile Bluetooth Tracking Beacon
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6:00 AM | Does Compressed Sensing have applications in Robust Statistics?
Does Compressed Sensing have applications in Robust Statistics? by Salvador FloresThe connections between robust linear regression and sparse reconstruction are brought to light. We show that in the context of xed design, the notion of breakdown point coincides with exact recovery of sparse signals from highly incomplete information. The main consequence of this connection in robust regression is that there exists, for any dimension, \many" designs on which the l_1 estimator has a positive […]
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12:58 AM | Watch Aaron Draplin Design a Logo
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December 10, 2014

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8:20 PM | How To Get Into Hobby RC: A Snapshot of the Multi-Rotor Market
Buying a multi-rotor can be a daunting experience. There are so many different models already on the market, with more emerging every day. Those choices represent a wide range of sizes, capabilities and quality, not to mention price points. In an effort to make the candidate pool a little less overwhelming, I have compiled an overview of currently-available multi-rotors. Consider it a snapshot of this ever evolving scene. Obsolescence will come quickly.To make the list more manageable it has […]
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8:03 PM | Stress, Continued: Jobs
Continuing from last post, I aim to focus on some of the issues related to stress in academia.  Today's post will be related to stress and the nature of academic employment.The most stressful issues I can think of in academia relate to finding or keeping your job.  Graduating and finding the first job, especially when the job market is tight, cannot help but lead to stress for most people.  (Indeed, these days, the process seems to be getting worse -- as postdocs become […]
Editor's Pick
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7:31 PM | Adam's Tour Diaries #15: Cleveland Rocks!
Dec. 5, 2014: Hello, Cleveland! My day here started early. The awesome Len Peralta showed up at 8:30 and took me out to breakfast! [Norm's note: Len's also the co-host of the Creature Geek podcast!]We talked a lot about kids, which is good because Len has about 37 of them.I’m amazed Len doesn’t walk with a cane.Oh, a word about that skillet we're eating off of. I was gobsmacked to find that it’s not real. I mean, it’s real, but it’s not iron -- it’s plastic. […]
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7:16 PM | LEGO Invisible Lift Contraption is Hypnotizing
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7:00 PM | In Brief: Android Wear Gets Major Update
Woot! As promised, Google is releasing a huge update to Android Wear today that'll finally allow developers and users to create custom watch faces. As outlined in this blog post, the update includes an official Watch Face API that lets devs program any watch face design, just like they would an app. And just like apps, Android Wear users can download those faces from Google Play--a bunch of new faces have already been released to coincide with this launch. Other updates include the ability to […]
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6:00 PM | In Brief: What You Should Know about Police Body Cams
You may have heard about President Obama's recently announced plan to assist local law enforcement's acquisition, education, and use of new equipment. In addition to using Federal funds to help bolster frayed relationships between law enforcement and the communities they serve, the pitch also called for funding of body cameras to be worn by police officers--a $75 million investment for 50,000 cameras. But what does the use of those cameras mean in practice? The Electronic Frontier Foundation […]
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5:00 PM | 12 Days of Tested Christmas: Favorite Starter Quadcopter
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4:55 PM | Walter Lewin
Yesterday I heard the sad news that Prof. Walter Lewin, age 78—perhaps the most celebrated physics teacher in MIT’s history—has been stripped of his emeritus status and barred from campus, and all of his physics lectures removed from OpenCourseWare, because an internal investigation found that he had been sexually harassing students online.  I don’t know […]
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4:30 PM | Compressive Hyperspectral Imaging with Side Information
This is some interesting use of RGB information and matrix factorization for a hyperspectral system: Compressive Hyperspectral Imaging with Side Information by Xin Yuan, Tsung-Han Tsai, Ruoyu Zhu, Patrick Llull, David Brady, and Lawrence CarinA blind compressive sensing algorithm is proposed to reconstruct hyperspectral images from spectrally-compressed measurements. The wavelength-dependent data are coded and then superposed, mapping the three-dimensional hyperspectral datacube to a […]
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3:57 PM | L_1 regularization in Machine Learning: Memory Bounded Deep Convolutional Networks / Sparse Random Features Algorithm as Coordinate Descent in Hilbert Space
What happens when you use l_1 regularization on Deep Convolutional Networks or Large Scale Kernel Machines ? This is the subject of inquiry of the following two papers, one of which will be presented as a poster tonight in Montreal at NIPS2014. Sparse Random Features Algorithm as Coordinate Descent in Hilbert Space by Ian E.H. Yen, Ting-Wei Lin, Shou-De Lin, Pradeep Ravikumar, Inderjit S. DhillonIn this paper, we propose a Sparse Random Features algorithm, which learns a sparse non-linear […]
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1:00 PM | C++ resources
This week’s resource post: C++ IEEE floating-point exceptions in C++ Unraveling Strings in Visual C++ C++ TR1 regular expressions Random number generation in C++ See also posts tagged C++ Last week: R resources Next week: HTML, TeX, and Unicode
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