Posts

August 24, 2014

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8:34 PM | Out for a drive...
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5:00 AM | Sunday Morning Insight: Relax, no need to round: integrality of clustering formulations
Awesome ! As we all know clustering is at the heart of Machine Learning and especially in unsupervised learning setting. But given the diverse set of algorithms, it is generally difficult to figure out which one should be applied and when. The authors of the following paper look at different instances or relaxation of the k-means/k-median algorithm and eventually get a sense of their respective strength through a vizualisation of their respective phase transitions. The map makers story […]
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5:00 AM | Tested Mailbag: American Tiki
No summary available for this post.

August 23, 2014

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5:20 PM | Why Is 290 Special?
How exceptions in theorems may affect their complexity Cropped from India Today source Manjul Bhargava is a mathematician who just won one of the 2014 Fields Medals. We offer our congratulations on this achievement. He is an expert in number theory, which makes him special to us among Fields medalists. His Fields citation includes his […]
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3:41 PM | More wisdom from mcguire
Names have been changed to protect the identities of those who may not wish to admit they know the Great Sage. (06:53:46 PM) Mittens: Have you fixed everything yet?!?!(06:54:00 PM) mcguire: I have fixed some things.(06:54:20 PM) mcguire: Some things cannot be fixed and some things have not been fixed yet. Some things may never get fixed.(06:54:30 PM) mcguire: Other things may be fixed, then broken again.(06:54:35 PM) Mittens: Some things are idiots.(06:55:23 PM) Mittens: Some things are big […]
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3:17 PM | Is the ACM "Retaliating" Against SOCG?
Friday afternoon Jeff Erickson posted at Making SOCG blog some "bad news".  Some background:  very recently, the Symposium on Computational Geometry, or SoCG, decided to leave the ACM, for various reasons.  There had been plans in the works for SoCG to be co-located with the Symposium on the Theory of Computing, or STOC, one of the flagship general theory conferences, in 2016.  STOC is an ACM conference.  Reportedly, Paul Beame, chair of SIGACT (the ACM theory special […]
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7:18 AM | LaTeX is code...
I'm giving a talk on LaTeX this Monday as part of our new grad student "boot camp" series. It's really more of an interactive presentation: I'll use writelatex (or sharelatex) to demo examples, give student simple assignments, and use real-time chat to see how things are going. It should be quite interesting. Here's the talk announcement:Did you know that every time you use $..$ to italicize text, or use \\ to force a newline, Leslie Lamport cries out in agony and Don Knuth starts another […]
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5:00 AM | Saturday Morning Video: Signal and Image Classification - Stephane Mallat
Yoann Fabre sent me the following:Hi, The following may interest you. (I don’t recall having seen it on Nuit Blanche, Google gives me nothing, sorry if I’ve missed it). There seems to be some big progress on understanding why deep learning work as can be seen in this lecture entitled Signal and Image Classification by Stephane Mallat.(Note: Yann Lecun seems to agree) Impossibly cool keynote talk by Stephane Mallat at CVPR about the theory behind convolutional […]

August 22, 2014

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10:12 PM | Soft Boiled - MakerBot Mystery Build
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9:53 PM | MIT Integrates 3D Printer and 3D Scanner To Print on Objects
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9:04 PM | End of summer musings on (lack of) rejuvenation and (too much) service
Summer is supposed to be a season of rejuvenation for academics. While research and service obligations remain, we get a break from teaching. Theoretically, since teaching is the major part of my job, this should mean that my summer schedule is (a) more low key, (b) more relaxing, (c) less time consuming, and (d) less […]
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6:27 PM | This Antique Steam Gauge Will Tell You How Much Bandwidth You're Using
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6:09 PM | Ira Glass Spills His Worktime Secrets
I didn't have a chance to read this Lifehacker interview with Ira Glass when it was first posted, but I'm glad I found it in my Instapaper queue this morning. The voyeuristic appeal of the series is strong for me. I love the glimpses you get into the processes of different businesses and publications. Audio wonks will love the details of the This American Life recording setup (they record interviews using a $240 AudioTechnica shotgun mic), but the real gem of the interview is his best life […]
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2:55 PM | DNA Sequencing, Information Theory, Advanced Matrix Factorization and all that...
In Improving Pacific Biosciences' Single Molecule Real Time Sequencing Technology through Advanced Matrix Factorization ?, I gave the following description of the matrix factorization:[1] The factorization has the following shape: Y = P X with Y a matrix representing the timed sequence coming out of all the cells, a rank-1 matrix X that is unknown with columns representing the full aligned DNA being sequenced and P represents an unknown (group) sparse matrix (with +1 elements) representing […]
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12:18 PM | [Photos] Patrimoine architectural d’Engadine: 30 façades de Scuol
En fond de vallée de l’Inn, en Basse-Engadine (canton des Grisons, Suisse), le vieux village de Scuol abrite une très belle collection de maisons engadines aux façades agrémentées de sgraffites, encorbellements, portes sculptées, encadrements ou fours à pains. The post [Photos] Patrimoine architectural d’Engadine: 30 façades de Scuol appeared first on Martin Grandjean.
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5:00 AM | Robust width: A characterization of uniformly stable and robust compressed sensing
Dustin just sent me the following:Igor, Jameson Cahill and I just wrote a paper that you might like:http://arxiv.org/abs/1408.4409Keep up the great blog! Cheers,DustinThanks Dustin. Uh, a cheat sheet to follow when you want to figure out if your sensing matrix will do well for compressive sensing, I like that indeed. Here is the paper: Robust width: A characterization of uniformly stable and robust compressed sensing by Jameson Cahill, Dustin G. MixonCompressed […]
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12:10 AM | Exclusive: Kevin Tong and Tom Whalen's Info•Rama Art Prints
Artist Kevin Tong is one of my favorite movie poster designers. If you've watched the videos shot at our office, you may have noticed his Overview print mounted on our studio set wall, as well as his Avengers Iron Man print in my garage in Tested member videos. We've also shared his design process videos on Tested before, which are fascinating for anyone who appreciates Adobe Illustrator work. I've had the pleasure of meeting Kevin at various conventions like the Renegade Craft Fair and […]

August 21, 2014

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9:29 PM | Episode 268 - Listener's Choice/Rumor Mill - 8/21/2014
This week, Norm, Jeremy, and Will discuss Ballmer's big purchase, what we'd like to see from Windows 9, iPhone 6 rumors, sweet tea, foaming milk, and the hidden costs of ordering coffee from your phone.
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3:00 PM | Optimization of Convex Functions with Random Pursuit - implementation -
Optimization of Convex Functions with Random Pursuit by Sebastian U. Stich, Christian L. Müller, Bernd GärtnerWe consider unconstrained randomized optimization of convex objective functions. We analyze the Random Pursuit algorithm, which iteratively computes an approximate solution to the optimization problem by repeated optimization over a randomly chosen one-dimensional subspace. This randomized method only uses zeroth-order information about the objective function and […]
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1:45 PM | Hashing Summer School
Back in July I took part in the Hashing Summer School in Copenhagen.  This was nominally set up by me, Rasmus Pagh, and Mikkel Thorup, though Mikkel was really the host organizer that put it all together.The course materials are all online here.  One thing that was a bit different is that it wasn't just lectures -- we really did make more of a "summer school" by putting together a lot of (optional) exercises, and leaving time for people to work through some of them in teams.  I […]
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12:40 PM | TCMM 2014, International Workshop on Technical Computing for Machine Learning and Mathematical Engineering - Last call for participation
Marco Signoretto just sent me the following:Dear Igor,Can you please post the last call for participation of TCMM on Nuit Blanche?kind regardsMarco----------Hereby we would like to invite academics and practitioners to participate into:TCMM 2014 International Workshop on Technical Computing for Machine Learning and Mathematical Engineering, 8 - 12 September, 2014 - Leuven, Belgium Workshop homepage: http://www.esat.kuleuven.be/stadius/tcmm2014/ To stimulate the participation of young […]
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6:17 AM | Adam Savage's Alien Spacesuit Replica
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5:00 AM | Maximum Entropy Hadamard Sensing of Sparse and Localized Signals - implementation -
Maximum Entropy Hadamard Sensing of Sparse and Localized Signals by Valerio Cambareri, Riccardo Rovatti, Gianluca SettiThe quest for optimal sensing matrices is crucial in the design of efficient Compressed Sensing architectures. In this paper we propose a maximum entropy criterion for the design of optimal Hadamard sensing matrices (and similar deterministic ensembles) when the signal being acquired is sparse and non-white. Since the resulting design strategy entails a […]

August 20, 2014

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9:58 PM | Bits to Atoms: Building the Millenbaugh Motivator, Part 3
Progress on the Millenbaugh Motivator marches on! All the measurements have been made and a rough version has been modeled and approved by Adam. This week we take a look at modeling the final version and speccing hardware.I decided to tackle the ‘valve arms’ first since I wasn’t sure how to build them. They look relatively simple but on closer inspection there’s multiple compound curves, plus the forked portion at the back and I couldn’t easily build them using my […]
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9:45 PM | Testing: Surface Pro 3 and Shield Tablet's Styli
Two things struck me while testing the Microsoft Surface Pro 3 and Nvidia's Shield Tablet, devices I ended up really liking. Both are ostensibly tablets, but the way I used each of them differed from how I used my iPad Mini. First, I rarely used held either of them like a notepad, with one or two hands gripping the sides. Most of the time, I had the Surface propped up in its "canvas" position using its kickstand on a flat surface, and kept the Shield Tablet propped up on a small makeshift […]
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8:30 PM | Building and Testing a Custom RC Airboat
Sometimes you seek inspiration. Sometimes inspiration smacks you in the face. As I was walking down the clearance isle at Walmart, I was smacked in the face. They had a few kid’s kickboards on clearance. With my Mini Alligator Tours airboat experiences still fresh on the brain, I immediately thought that one of these kickboards could be the starting point of a scratchbuilt airboat.Sitting next to the Mini Alligator Tours, the wide stance and minimalist design of my DIY airboat is […]
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8:00 PM | Matchbox Car Factory, Circa 1962
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7:57 PM | Linux Foundation Announces New Linux Certification Program | The Linux Foundation
New program will help expand global talent pool of experienced Linux pros and offer the first fully virtual, performance-based, distribution-flexible certification exam Chicago, Ill. LINUXCON & CLOUDOPEN, August 20, 2014 – The Linux Foundation, the nonprofit organization dedicated to accelerating the growth of Linux and collaborative development, today is announcing a new Linux Foundation Certification…Read more →
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4:44 PM | Zoidberg Jesus at Comic-Con!
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4:00 PM | The Zoidberg Project, Part 12 (Finale and Recap!)
Even though The Zoidberg Project has been wrapped up for a while now, it’s not over. I got sidetracked back in May with the Gore Magala build for Capcom's Monster Hunter 4 Ultimate display, and I still owe you all one more article!So let's back track a bit….back to early April. Leading up to the debut at WonderCon, I had a ton of finishing to do on the Zoidberg costume. The feet that Carson and I sculpted and molded needed to be cast up and painted. We opted for a simple latex and […]
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