Posts

August 29, 2014

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1:00 PM | Getting Started With the Printrbot Simple Metal
Norm and I kicked off July by building a 3D printer, the Printrbot Simple Metal It was the third printer we’ve built, and it was interesting building a printer with a metal frame, but once we got it assembled and did a couple of test prints, we didn’t have time to touch it for a month. I’ve spent much of the last week dialing in the printer, figuring out its nuances, and getting decent prints out of it. We’ll do a Tested In-Depth video with it at some point in the […]
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9:12 AM | Makerbot Mystery Build: Beware the Vertices
No summary available for this post.
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5:00 AM | Universal Streaming
This is simply fascinating: Universal Streaming by Vladimir Braverman, Rafail Ostrovsky, Alan RoytmanGiven a stream of data, a typical approach in streaming algorithms is to design a sophisticated algorithm with small memory that computes a specific statistic over the streaming data. Usually, if one wants to compute a different statistic after the stream is gone, it is impossible. But what if we want to compute a different statistic after the fact? In this paper, we consider the […]
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3:42 AM | Shout-out to Sabeti Lab
A shout-out today to my friend and colleague Pardis Sabeti (and her lab) for their Science article on the Ebola virus that appeared earlier today.  Pardis and her group have been studying the genetics of viral diseases, and in particular the Lassa virus.  So they were there and ready when the recent Ebola virus began and went to work.  They sequenced 99 Ebola virus genomes from 78 patients, and have analyzed the resulting information to gain insight into how the disease is […]

August 28, 2014

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5:12 PM | Do theoretical computer scientists despise practitioners? (Answer: no, that’s crazy)
A roboticist and Shtetl-Optimized fan named Jon Groff recently emailed me the following suggestion for a blog entry: I think a great idea for an entry would be the way that in fields like particle physics the theoreticians and experimentalists get along quite well but in computer science and robotics in particular there seems to […]
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3:00 PM | Norm and I Are On Our Way to Seattle
Sorry for the slow news days today and tomorrow. Norm and I are both travelling, and will be incommunicado for the first part of the day. If you're coming to PAX in Seattle, we'll be there, and there will be a Tested meetup on Friday night from 6:30 to 8:30. Follow Will and Norm on Twitter, and we'll post the details on Friday afternoon. (Premium members check your email, you already have the details). We'll be.around all weekend, playing board games, hanging out with people and checking out […]
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1:00 PM | Episode 269 - I Felt the Earth Move - 8/28/2014
As they prepare to leave for PAX Prime in Seattle, Will and Norm discuss the Napa earthquake, Amazon buying Twitch, living inside a hologram, and the biggest Kickstarter ever. All that, plus our PAX plans, what we're testing, and your questions answered. Enjoy!
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8:08 AM | I’m a teapot
Great to see Google adhering to standards and finally implementing RFC 7168: The Hyper Text Coffee Pot Control Protocol for Tea Efflux Appliances (HTCPCPT-EA), published at the start of April this year. From §2.3.3: TEA-capable pots that are not provisioned to brew coffee may return either a status code of 503, indicating temporary unavailability of […]
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8:07 AM | Witnessing the early growth of a giant : First ever sighting of galaxy core formation
Astronomers have uncovered for the first time the earliest stages of a massive galaxy forming in the young Universe. The discovery was made possible through combining observations from the NASA/ESA Hubble Space Telescope, NASA’s Spitzer Space Telescope, ESA’s Herschel Space Observatory, and the W.M. Keck Observatory in Hawaii. The growing galaxy core is blazing with…Read more →
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6:32 AM | Adam Savage's Incredible Muscle Suit
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5:00 AM | Compressive Sampling of Polynomial Chaos Expansions: Convergence Analysis and Sampling Strategies
The sensing matrices in Uncertainty Quantification are very structured and so it is sometimes difficult to use solvers relying on gaussian measurement matrices and one wonders if solvers different from L1 could be contemplated in light of the recent SwAMP thing. Anyway, today's paper investigate in a deep fashion this subject. Let us note the use of phase transition as a comparison tool, great !Compressive Sampling of Polynomial Chaos Expansions: Convergence Analysis and Sampling […]

August 27, 2014

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10:45 PM | Testing: Sony RX100 MK III Compact Camera
I've been on the hunt for a pocket camera to complement my DSLR, and spent time with cameras with sensors ranging from micro 4/3 to full-frame. My test of Sony's RX100 Mark II made me seriously consider the trade off between body size and sensor size. There were several things that held it back from being ideal for my day to day use, but I realized that getting a compact camera with an APS-C or Full-Frame sensor would compete too directly with my DSLR. Going for portability made more sense for […]
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5:44 PM | Update on SOCG and ACM
I am happy to have an update on the SOCG/STOC colocation issue that arose last week.  Or, better said, Jeff Erickson has an update, the short summary of which is that it looks like there has now been some very useful clarification.  The concerns of the ACM apparently are limited to direct financial support, and the conferences can (formally) co-locate.  I encourage you to read the note on Jeff's blog from Paul, and let me echo Jeff's statement here: "Needless to say, this […]
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4:52 PM | What the FAA Thinks of RC Aircraft, and Why it Matters
The past few weeks have witnessed developments that could spell the end of radio-control aeromodeling as we know it. In short, the Federal Aviation Administration (FAA) has claimed jurisdiction over certain RC activities. This move comes as part of the FAA’s attempt to grasp control of the rapidly expanding presence of Unmanned Aerial Systems (UAS) in the national airspace. What was once a relaxing pastime could soon be a punishable offense. Here's how that could affect you and your FPV […]
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4:00 PM | In Brief: A Beginner's Guide to Drills and Bits
BoingBoing has been running a nice series of instructional guides to common workshop tools, written by maker Steve Hoefer. He started with a guide to wire strippers, and then a beginner's guide to hammers, and today has published an overview to the many different types of hand drills and bits. I like Hoefer's approach to explaining tools; his write-ups are primers are more about breath than depth, and point you in the right direction for a specific task at hand. Perfect for a beginner like me!
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3:30 PM | Parallel Paths for Deep Learning and Signal Processing ?
This is a follow-up to this thread.Deep learning in Machine Learning stands for neural networks with many layers for the purpose of producing features that can eventually be used for classification. In image/signal processing, the generic idea is to acquire and decompose a signal along a family of (generally) known signals (bases in known/identified spaces). Simple machine learning techniques can then rely on the elements of that decomposition (the features in ML) to achieve the last step of a […]
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11:22 AM | #itwist14 and CfP: Biomedical and Astronomical Signal Processing (BASP) Frontiers 2015
The twitter handle you currently want to follow is that of iTWIST ( international Traveling Workshop on Interactions between Sparse models and Technology ) that is taking place right now, it is: #itwist14Also Yves Wiaux sent me the following:Hi IgorCould I ask you to post this conference announcement on Nuit Blanche?Thanks a lot in advanceCheersYvesHere is the announcement:***Re: Biomedical and Astronomical Signal Processing (BASP) Frontiers 2015 at baspfrontiers.orgDear ColleaguesAbstract […]
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8:30 AM | Illustrious company
Yesterday, I saw this quote from the blurb for Jamie Bartlett’s new book The Dark Net: Beyond the familiar online world that most of us inhabit — a world of Google, Hotmail, Facebook and Amazon — lies a vast and often hidden network of sites, communities and cultures where freedom is pushed to its limits, […]
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7:40 AM | Bits to Atoms: Building the Millenbaugh Motivator, Part 4
Your patience has paid off--it’s time for the final print of the Millenbaugh Motivator! All the measurements have been made, a rough version has been completed, the final version has been modeled and prototypes printed. After three months of work, it was time to get this delivered to Adam. And that meant making a flight back out to San Francisco.For my previous prints, such as the Octopod and Jetcar builds, I’ve used the trusty Objet Connex500. It's a high-end polyjet printer that […]
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7:20 AM | Adam's Mecha-Hand Posters are Now Shipping!
Hey everyone, we're pleased to let Premium Members know that we began shipping out the Mecha-Hand posters today. The prints arrived in our office and look fantastic--they're 24"x36" if you want to get a frame ahead of time. We had to approve the packing process, and are shipping them out in batches of a few hundred each. Once Will and I get back from PAX, we'll continue the shipping the rest of the posters a batch at a time, and hope to have all of them out for members who joined during the […]
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7:05 AM | This Is The Best Wi-Fi Router
This post was done in partnership with The Wirecutter. Read the original full article below at TheWirecutter.comIf your laptop, smartphone, or tablet uses the latest wireless-AC networking technology and you’re shopping for a new router, you should get the Netgear R6250. The benefits of wireless-ac are great: super-fast performance that can be stronger at longer distances than wireless-n routers. More than 100 hours of combined testing and research led us to the $150 R6250, which boasts […]
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6:18 AM | Tested In-Depth: Amazon Fire Phone
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5:00 AM | Yoshua Bengio"s view on Deep Learning
Following this entry, Yoshua Bengio just wrote the following on his Google+ stream (I have a added a few links and reshaped the text for clearer reading):There was an interesting debate on deep learning at Technion a couple of days ago: http://nuit-blanche.blogspot.fr/2014/08/is-deep-learning-final-frontier-and-end.html I wasn't there but I wished I had been to clarify a number of points. So I wrote this message to the members of the debate panel (sorry, it's pretty […]

August 26, 2014

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10:42 PM | Who Invented Pointers, Amortized Complexity, And More?
Some algorithmic tricks were first invented in complexity theory Andrey Kolmogorov, Fred Hennie, Richard Stearns, and Walter Savitch are all famous separately; but they have something in common. Read on, and see. Today I wish to discuss some algorithmic tricks and show that they were initially used by complexity theorists, years before they were used […]
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10:14 PM | New Article on arxiv on Equitability and MIC
We recently put on arxiv a new draft on "Theoretical Foundations of Equitability and the Maximal Information Coefficient".  This is some follow-on work to a paper that appeared in Science a couple of years ago, where we introduced the idea of equitability.  Essentially, in that Science paper (link to page where you can access the paper), we wanted a statistic that would give back, for samples from a noisy functional relationship, a score corresponding to the amount of noise (or, […]
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7:02 PM | Do we live in a 2-D hologram? New Fermilab experiment will test the nature of the universe
A unique experiment at the U.S. Department of Energy’s Fermi National Accelerator Laboratory called the Holometer has started collecting data that will answer some mind-bending questions about our universe – including whether we live in a hologram. Much like characters on a television show would not know that their seemingly 3-D world exists only on…Read more →
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6:32 PM | Designing a Custom Arcade Cabinet in Sketchup
As soon as Norm and I decided to build an arcade cabinet, we ran into a problem: We didn't actually know how to build an arcade cabinet. We knew what we wanted, at least in general--a four-player MAME cocktail cabinet that could support fighting games and beat 'em ups and pretty much anything else we could throw at it. How hard could it be to find exactly what we wanted online, then replicate it at home? Turns out: Pretty hard.ArcadeDepot, one of the most popular sources for arcade kits, was […]
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6:00 PM | Testing: Instagram's Hyperlapse App for iOS
Instagram today announced and released a new iOS video app called Hyperlapse. It was a pet project of Instagram engineers Thomas Dimson and Alex Karpenko, and impressed Instagram founder Kevin Systrom enough that the company developed it into a full-fledged app. Wired Design's Cliff Kuang has an exclusive story about the app's origins, if you're curious. But after a morning of testing, here's what you need to know about it.Hyperlapse is a time-lapse app for iOS, much like Studio Neat's […]
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5:07 PM | Can we use games to control our mood?
Video games are very complex experiences. They involve paying attention to virtual objects, vehicles and characters; all working together to offer both a challenge and a narrative. As a result they provoke a wide range of emotions. Games can make us anxious and scared, but also relaxed. They can help change boredom into excitement, and sadness into happiness. They seem to be able to change how we feel. But how reliable are they? Can we use games to switch our emotions at will? Can we use them […]
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4:31 PM | Best Jobs Ever - 8/26/2014
The Still Untitled jobs trilogy continues, with Adam, Will, and Norm discussing their best jobs. You might be surprised by some of their responses! Be sure to share your favorite jobs in the comments below.
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