Posts

September 17, 2014

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8:00 PM | Tested + NASA Spacesuit Infographics Poster
No summary available for this post.
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6:52 PM | What Will Power the Long-Distance Spacecraft of the Future?
In May, when researchers contacted the International Sun-Earth Explorer 3 (ISEE-3) for the first time in 16 years, that a decade’s old spacecraft still had enough juice to phone home might have come as a surprise. Launched in 1978, here was an object some 36 years old that had better battery life than some of the most advanced technology in existence today.But that’s precisely it: ISEE-3, and other spacecraft, like it, don’t run on batteries. And they likely won’t in the […]
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6:15 PM | Beautiful Quadcopter Video Over Prague
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6:00 PM | In Brief: Bartek Elsner's Cardboard Sculptures
BoingBoing pointed me to the blog of Berlin-based artist Bartek Elsner, who creates sculptures of real-world and fantastical objects solely from paper and cardboard. His works have a striking polygonal look to them, and the flat shading of the light bouncing off each cardboard panel makes the pieces look like video game art models pulled into the real world, sans texturing. My favorite may be this "internet appliance" he built in 2012. Volvo filmed Elsner at work earlier this year for their Art […]
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4:57 PM | Norm Drinks Soylent, Day 3
Norm Drinks Soylent, Day 3
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4:00 PM | The Best Wireless Carriers Today
This post was done in partnership with The Wirecutter, a list of the best technology to buy.Read the full article below atTheWirecutter.comIf you’re in the U.S. and looking for a carrier with good coverage, fast bandwidth and—this may surprise you—affordable single-line plans, you should consider Verizon Wireless. We found it has the widest coverage map, the fastest network, and the lowest costs for individuals. But it’s not the only answer for everyone: Some situations […]
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3:00 PM | In Brief: Amazon May Launch New Kindles on Nov 4th
For the past six years, Amazon has followed a pretty regular annual schedule of updating its popular Kindle e-book reader. The past few updates, including two generations of Paperwhite, have brought relatively minor improvements--faster processors for page turning, higher contrast in its e-ink display, and lighter formfactors. We've been waiting for a big leap in Kindle, and that may not come this year. The Verge is reporting that Amazon has accidentally listed this year's Kindle refresh on its […]
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10:00 AM | Ce Soir: Paris Machine Learning Meetup #1, Season 2, A New Beginning (Snips, Nomo, Clustaar and more)
Once again with Franck, we have decided to do a second season of the pretty successul season 1 of the Paris Machine Learning Meetup. We have about 1200 members and growing. The twitter hashtag for tonight's meetup is #MLParis. The YouTube page is here, while the Google Hangout Event page is here.Paris Machine Learning resources other than ones on Meetup.com include the LinkedIn group, Google+ group and the Archives of meetup.A big thank you to DojoEvents for hosting us. Here is the […]
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8:18 AM | How To Spot the International Space Station
Many people have a difficult time comprehending the massive proportions of the International Space Station (ISS). Weighing almost one million pounds, and filling the footprint of a football field, it is by far the largest man-made object in space. The ship has an acre of reflective solar arrays that provide power for the crew and also help make the ISS the third brightest object in the night sky (behind the Moon and Venus). It is easily viewed with the naked eye. You just need to know where to […]
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5:38 AM | Building a Custom Arcade Cabinet, Part 4
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5:00 AM | Multiresolution Matrix Factorization
You probably recall the idea expressed in Sunday Morning Insight on Matrix Factorizations and the Grammar of Life, where one would iterate on several matrix factorization in order to provide a convinving decomposition of a data matrix. The idea is similar to diffusion wavelets and more recent  signal processing on graphs. Here is a new paper on the matter:  Multiresolution Matrix Factorization by Risi Kondor, Nedelina Teneva and Vikas GargAbstract: The types of large matrices […]
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1:00 AM | NASA Announces Commercial Crew Program, Targets 2017 Goal
No summary available for this post.

September 16, 2014

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9:00 PM | In Brief: Canon Announces PowerShot G7 X, Long-Awaited 7D Mark II
It's been a crazy week in technology already, and a few bits of news escaped me until today. Photokina is going on right now, and camera companies are making some pretty big announcements there. New "entry-level" Leica cameras, Instagram-styled Polaroid instant cameras, and plenty of lenses. I honestly have trouble keeping up with all of it. But Canon has two cameras that extremely notable. First is the PowerShot G7X, a direct competitor to the Sony RX 100 III. It's a compact that uses the same […]
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4:28 PM | Fafnir: third issue is out
Spread the word: We are proud to present the third issue of Fafnir – Nordic Journal of Science Fiction and Fantasy Research! The issue can be read at http://journal.finfar.org. Fafnir is a new, peer-reviewed academic journal which is published in … Continue reading →
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3:09 PM | Norm Drinks Soylent, Day 2
Norm Drinks Soylent, Day 2
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1:00 PM | Touring Australia and New Zealand - 9/16/2014
Adam's back from down under, and shares tales of the distant lands of Australia and New Zealand.
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11:11 AM | Hardware Based Stochastic Gradient Descent
  Starting at 52 minutes and 10 seconds of this video, Ali Rahimi explains how one can use a noisy evaluation of the gradient in a gradient descent algorithm in order to minimize a convex function (most relaxations featured in current Advanced Matrix Factorization techniques and some instances of Compressive Sensing fall in that category). The interesting part of this is that the noise comes from the errors made by the, now stochastic, Floating Point Unit.  From the paper […]

September 15, 2014

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4:03 PM | Norm Drinks Soylent, Day 1
Norm Drinks Soylent, Day 1
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3:30 PM | Accelerating Random Forests in Scikit-Learn
Accelerating Random Forests in Scikit-Learn by Gilles Louppe 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 Linkedin.
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3:00 PM | CSjob: Associate professor in signal processing with special emphasis on compressive sensing, Aalborg, Denmark
Found on the interweb: Associate professor in signal processing with special emphasis on compressive sensing (42102) At the Faculty of Engineering and Science, Department of Electronic Systems, Signal and Informations Processing section (SIP), a position as associate professor in signal processing with special emphasis on compressive sensing is open for appointment from 1 October 2014 or soon hereafter. The position is for a period of four years. The Department of Electronic Systems is […]
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3:00 PM | In Brief: Microsoft Buys Minecraft for $2.5 Billion
Microsoft today announced that it has acquired Mojang, the Stockholm-based game developer that created and publishes Minecraft. The deal is valued at $2.5 Billion. To date, Minecraft has sold more than 54 million copies across multiple gaming platforms, and Microsoft says that it intends to keep to keep developing and supporting the game in platforms outside of the Windows and PC ecosystem. Phil Spencer, the head of Microsoft's Xbox division, reassures Minecraft fans in a public statement, and […]
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1:13 PM | Visualiser des données : l’exemple du marché de la bière
Le marché mondial de la bière est dirigé par une poignée de grands groupes, dont quatre se partagent la propriété de plusieurs centaines de marques, totalisant près de la moitié de la production mondiale. Exercice de visualisation, raté ? Alors que le groupe hollandais Heineken (3e mondial) vient de refuser l’offre du groupe britannique SABMiller (2e mondial), Le Monde publie sur son site web un visuel déjà […]
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7:28 AM | Google Play App Roundup: Amazon Instant Video, Block Fortress, and Phantom Rift
It's that time of the week again. Time to shake off the weekend vibe and get back to work. But you can probably spare a few minutes to check out some new apps. This is the Tested Google Play App Roundup, which is where we tell you about the best new and newly updated apps on Android. Just follow the links to Google Play.Amazon Instant VideoWhat universe is this? It's hard to believe, but there is finally a way to play Amazon Instant Video on your non-Amazon Android phone. Don't get too […]
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7:00 AM | Show and Tell: LEGO Mystery Build #9
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6:58 AM | Simultaneous Enrollment
The Crimson has an op-ed on simultaneous enrollment, that I agree with.Harvard does not like simultaneous enrollment, which means a student taking two classes that meet at the same time -- any time overlap counts (whether the whole class or half an hour once a week).  If you want to take a class via simultaneous enrollment, you have to petition the Administrative Board, and your professor is supposed to provide direct hour-per-hour instruction for the class you can't intend.  As […]
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5:00 AM | Thesis: Randomized Algorithms For Large-Scale Strongly Overdetermined Linear Regression Problems - Xiagrui Meng
RANDOMIZED ALGORITHMS FOR LARGE-SCALE STRONGLY OVER-DETERMINED LINEAR REGRESSION PROBLEMSXiangrui MengIn the era of big data, distributed systems built on top of clusters of commodity hardware provide cheap and reliable storage and scalable data processing. With cheap storage, instead of storing only currently relevant data, most people choose to store data as much as possible, expecting that its value can be extracted later. In this way, exabytes (1018) of data are being created on a daily […]

September 14, 2014

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4:45 PM | Some Strange Math Facts
Things we did not know Ulam holding a strange device Stanislaw Ulam was a Polish-American mathematician whose work spanned many areas of both continuous and discrete mathematics. He did pioneering research in chaos theory and Monte Carlo algorithms, and also invented the concept of a measurable cardinal in set theory. His essential modification of Edward […]
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12:40 AM | Prevent errors or fix errors
The other day I was driving by our veterinarian’s office and saw that the marquee said something like “Prevention is less expensive than treatment.” That’s sometimes true, but certainly not always. This evening I ran across a couple lines from Ed Catmull that are more accurate than the vet’s quote. Do not fall for the […]

September 13, 2014

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8:33 PM | Sum of geometric means
Let xn be a sequence of non-negative numbers. Then the sum of their running geometric means is bounded by e times their sum. In symbols The inequality is strict unless all the x‘s are zero, and the constant e on the right side is optimal. Torsten Carleman proved this theorem in 1923.

September 12, 2014

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8:07 PM | Job : Signal processing and signal fusion methods for irregularly sampled signals obtained with crowd-sensing. Application to air quality monitoring.
Matthieu Puigt just sent me the following after we talked at today's meeting: As you offered during our chat, here is the advertisement I would appreciate you to share on Nuit Blanche. I thank you so much for your help. Best regards,Matthieu-- A few months ago, we had an opening for a Ph.D. student position (see below for the description of the subject). The thesis was about to start in October but the selected candidate just left us and, as the Ph.D. thesis is granted, we are […]
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