Posts

August 07, 2014

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5:00 AM | sFFT-DT: Sparse Fast Fourier Transform for Exactly and Generally K-Sparse Signals by Downsampling and Sparse Recovery
Performing FFT using the fact that the underlying signal is sparse has been an item of great interest and several researchers are trying to get the faster algorithm they can ( see the FFT tag) . The following paper is trying to push the envelope. I cannot see an implementation of it listed though. Let us note the use of this approach to perform better localization for the GPS signal.Sparse Fast Fourier Transform for Exactly and Generally K-Sparse Signals by Downsampling and Sparse […]
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1:11 AM | The Secret to Smarter Robots: Ants
Your cat is stuck in a burning building too dangerous for rescue crews to go inside, so off go the drones instead – five little unmanned aerial models that hover and flit through fiery beams and door frames without any human control. They know to spread out to cover more ground, and know how to adjust their search patterns when the communication links with the other drones go down. Their algorithms find and retrieve your cat in what rescue crews tell you is record time.Or that's the dream […]

August 06, 2014

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8:33 PM | Devnology podcast interview
When I was in Amsterdam earlier this year, Daan van Berkel interviewed me for the Devnology podcast. We talked about my winding career path, the overlap of math and computing, bringing math and computing closer together, formal methods, etc. The podcast was posted this afternoon here. Related post: Looking like you know what you’re doing
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5:30 PM | Bits to Atoms: Building the Millenbaugh Motivator, Part 1
I remember watching the first Hellboy Mecha-Hand video that Will shot with Adam, and was pumped for what was to come. I'm a Hellboy fan and this particular prop had all the elements I love: mystical, mechanical, intricate WWII-era tech with a killer look. If you told me that two years later I would play a part in finishing said project, I wouldn’t have believed it.It almost never happened since I wasn’t going to enter Adam’s Inventern competition. At the time, I was spending […]
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5:12 PM | Arrival at 67P
Ten years and one day ago, I mentioned the dual use capability of the Rosetta's startracker. Today, Rosetta sent this marvelous up close shot of comet 67P.@WilliamShatner @esa Comet on screen, Captain. Sensor scans in progress and hailing frequencies open. pic.twitter.com/SZX0sfr7b4— ESA Rosetta Mission (@ESA_Rosetta) August 6, 2014  Join the CompressiveSensing subreddit or the Google+ Community and post there ! Liked this entry ? subscribe to Nuit Blanche's feed, there's more where […]
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5:00 PM | A Brief History of the Theremin
No summary available for this post.
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4:00 PM | In Brief: Why Your Best Thinking Happens in the Shower
Wired Science has an interesting blog post about why our best thinking seems to happen when we're in the shower. According to psychologists, it's because the shower is a perfect situation for our brains to enter the "default mode network," a mental state in which the environment seems to fade and you become more aware of your internal thoughts. Kind of like an out-of-body experience. Activities like showering (or building LEGO!) engage a part of your brain to keep you just mentally active […]
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1:10 PM | A brief note on Fano's inequality
I've been bumping into Fano's inequality a lot lately, and have found the various explanations on the web somewhat lacking. Not because they aren't useful, but because their perspective is very different to the kind that I'd prefer as an algorithms person.So after grumbling and mumbling and complaining, I decided the only solution was to write my own ! And here it is, as a raindrop.Eh ? What's that you say ? And here we're just getting used to twitter ?Raindrops are a web publishing form […]
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12:00 PM | Twitter news
Starting next week, @MedVocab will post two tweets a day, once in the morning and once in the afternoon (CDT). I’ve stopped posting to @DailySymbol. It was a fun experiment, but it was time to wrap it up. My most popular account, @CompSciFact, now has over 100,000 followers. It’s interesting how some Twitter accounts take […]
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11:50 AM | Triangulum Galaxy Snapped by VST
The VLT Survey Telescope (VST) at ESO’s Paranal Observatory in Chile has captured a beautifully detailed image of the galaxy Messier 33. This nearby spiral, the second closest large galaxy to our own galaxy, the Milky Way, is packed with bright star clusters, and clouds of gas and dust. The new picture is amongst the…Read more →
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7:17 AM | Tested Builds: LEGO Sandcrawlers, Part 3
Tested Builds: LEGO Sandcrawlers, Part 3
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6:43 AM | Jamie Hyneman Walks Through Comic-Con 2014
No summary available for this post.
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6:41 AM | Analog Game Studies
Digital games are not everything there is in games, far from it. There is now a new journal, Analog Game Studies, for all of us interested in board games, table-top role-playing games, card games — I think that actually means … Continue reading →
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5:00 AM | WiTrack and RTI Goes Wild: Indoor and Outdoor Radio Tomographic Imaging
Using radio waves to evaluate people's location is featured in two ways today with WiTrack for inside applications (and the ability to distinguish gestures) and with a different application that goes outside.3D Tracking via Body Radio Reflections by Fadel Adib, Zachary Kabelac, Dina Katabi, Robert C. MillerThis paper introduces WiTrack, a system that tracks the 3D motion of a user from the radio signals reflected off her body. It works even if the person is occluded from the […]
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2:35 AM | Chatzidakis

August 05, 2014

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7:59 PM | Panel discussion on writing for developers
AirPair is hosting a panel discussion entitled Developer Writing Tips & Tricks as part of AirConf on August 25. I’ll be one of the panelists. The AirConf events will be broadcast via G+ hangouts.
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5:00 PM | Oldies but Goodies
Nobody Cares About You and Your AlgorithmNegative reviews and the weak minded 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 compressive sensing, advanced matrix factorization and calibration issues on […]
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3:00 PM | Shop Secrets - 08/05/2014
This week, Adam, Norm, and Will are joined by Frank Ippolito, who shares hard-won shop secrets, his strategies for setting up his increasingly larger shops, and more. Enjoy!
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2:43 PM | The Visual Microphone: Passive Recovery of Sound from Video
The research that looks at tiny changes in imaging scenes is revealing to be richer in terms of providing information. Here is the latest paper that is making the rounds on the interwebs. Let us note that similar technology used to require interferometry but that, thanks to Moore 's law through the ever redundant supply of more imaging pixels, we can now use that redundant information for what we used to think as technologies that could not exist. Without futher ado: The Visual Microphone: […]
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7:54 AM | The Best SSD Today
If I bought a solid-state drive (SSD) today, I'd get the 512GB Crucial MX100 for about $220. It's not the fastest SSD you can get, but it's close. More importantly, it has the best combination of price, performance, and capacity. Additionally, Crucial makes its own NAND flash memory and its SSDs have a history of reliability. It's about $30 cheaper than the 500GB Samsung 840 EVO and has the best price per gigabyte of all those we looked at, so it's the best choice for most people who are […]
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7:03 AM | Tested Builds: LEGO Sandcrawler, Part 2
Tested Builds: LEGO Sandcrawler, Part 2
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7:00 AM | SDCC 2014: The Giant Creature Project
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5:00 AM | Review: Low Complexity Regularization of Linear Inverse Problems
Here is a nice review: Low Complexity Regularization of Linear Inverse Problems by Samuel Vaiter, Gabriel Peyré, Jalal M. Fadili Inverse problems and regularization theory is a central theme in contemporary signal processing, where the goal is to reconstruct an unknown signal from partial indirect, and possibly noisy, measurements of it. A now standard method for recovering the unknown signal is to solve a convex optimization problem that enforces some prior knowledge […]

August 04, 2014

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9:26 PM | Photo Gallery: The Making of Adam Savage's Hellboy Mecha-Glove
As promised, here are Adam's in-progress photos from his journey replicating Rasputin's Mecha-Glove from Hellboy. Get an up close look at the individual components that make up the piece, along with measurements and notes from every part of the build.
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8:06 PM | Generating primes in LaTeX
Inspired by a recent discussion on the wonders of , I started thinking about how easy it would be to generate prime numbers in . Well, unsurprisingly, it was presented as an example by Knuth using trial division in The TeXbook (download) in 1984: You can also do it by sieving; check out the examples […]
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5:50 PM | Testing: Traveling Abroad without a Laptop
I just got back from a two-week trip to France to see my wife's extended family. This is only my fourth time leaving the country and I've been working on paring down my travel gear to the essentials. The only thing worse than not having what you need is having a bunch of stuff you don't. This year I tried to travel as light as possible. I knew I should spend most of my time visiting family, not staring at a screen, but I also knew that two weeks without doing any sort of writing would drive me […]
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5:04 PM | SDCC 2014: Ghostbusters Terror Dog
No summary available for this post.
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5:02 PM | In Brief: The Average Price of a LEGO Brick
Since we're building LEGO on the site this week, it's a good time to revisit the economics of toy bricks. The price of a single LEGO brick is a topic that data nerds love to analyze. I've previously shared this in-depth statistical analysis of LEGO set pricing from early 2013, and Wired's wonderful Dot Physics blog tackles the topic again today. Wired's surveying of modern LEGO sets identifies an average price of about 10 center per piece--what LEGO fans and Brickset traders have known for a […]
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5:00 PM | The Best Android Smartphone for Your Network (July 2014)
You don't usually get do-overs after you choose a new phone. That privilege only comes along once every year or two, so you've got to make it count. It's getting hard to make a truly bad choice when it comes to Android phones, but why settle for good enough when you can have the best? It's time to check out the lineup on the big four US carriers and see which devices are worth your time and money.This month Samsung finally gets some serious competition from LG, and the Nexus continues to ride […]
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4:46 PM | In Brief: NASA Announces Marks 2020 Rover Payload
Last Thursday, NASA JPL announced the loadout for the still-as-yet unnamed Mars 2020 rover. The follow up to 2012's Curiosity will carry seven scientific instruments, selected from 58 proposals made by engineers and researchers worldwide. The 2020 rover is based on Curiosity's proven chassis and landing system design, with upgraded hardware to explore its surroundings. (A landing site has not yet been determined.) Among the new gear--which will be developed by partners at academic and private […]
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