# Posts

### February 11, 2015

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Sometimes it’s rational to walk away from something you’ve invested a great deal in. It’s hard imagine how investors could abandon something as large and expensive as a shopping mall. And yet it must have been a sensible decision. If anyone disagreed, they could buy the abandoned mall on the belief that they could make a […]
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This week’s resource post lists some articles along with source code I’ve posted on CodeProject. Probability Pitfalls in Random Number Generation includes several lessons learned the hard way. Simple Random Number Generation is a random number generator written in C# based on George Marsaglia’s WMC algorithm. Finding probability distribution parameters from percentiles Numerical computing Avoiding […]
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HSBC “Swiss Leaks” data shared by the International Consortium of Investigative Journalists reflect the globalization of tax evasion. While billions of dollars are inconceivable, mapping the origin of bank account holders allows an overview. This map is only a small contribution to the understanding of the Swiss Leaks data: Why this map? This map does voluntary not strictly stick to the geographical reality. It is a response to too many maps […]
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It's hiring season, and we've all heard about two-body problems.But you may not have heard of the one-body problem:Is the place a single person takes a job in likely to have enough other single people around to facilitate searching for a partner ? I was 'spoken for' before I even finished my Ph.D, and never had to deal with this (rather, I had to work with the more traditional (ha!) two-body problem).
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The streaming video of tonight's event is below. We should have all the presentations in this blog entry by the time the meetup starts:  We now have a Twitter account: ParisMLgroup and our hashtag is #MLParis.Here is the tentative program for tonight's meetup with the presentation slides (all of them should be here when the meetup starts tonight):John Langford, Microsoft Research NY, "Vowpal Wabbit" Ludovic Denoyer, LIP6, Reinforcement Learning for Data Processing and Deep […]
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The paper deadline for BioVis 2015 (http://biovis.net/, July 10-11) – the 5th Symposium on Biological Data Visualization – closes soon. Original contributions are invited on all aspects of visualization in biology, from molecular to cell, tissue, organism and population biology. In addition to full scientific papers, BioVis also invites scientific posters, participation in a data contest, or [...]

### February 10, 2015

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This post was done in partnership with The Wirecutter, a list of the best technology to buy.Read the full article below atTheWirecutter.comIf I were looking for a good, inexpensive, 50-inch TV, I’d get the Vizio E500i-B1. It has above-average picture quality—better than many more expensive models—with impressively dark blacks (a rarity in this price range of LCD), bright whites, decent motion resolution, and reasonably accurate colors. It also consistently gets top marks from […]
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No summary available for this post.
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Smithsonian magazine has a fun little feature about the history of chocolate in the space program. Chocolate has been a choice treat for cosmonauts and astronauts since the very first manned space flights, but has travelled in many different forms: tubed sauce, pudding, brownies, and of course, M&Ms. We were privileged to be able to see some of these freeze-dried and vacuum-sealed snacks during our visit to JSC in 2013. I can neither confirm nor deny that I have a sealed package of space […]
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It has come to my attention that I may not be doing an optimal job at providing the right tag for the right blog entry. In particular, I am sometimes not putting the most appropriate label and while putting another less used one. For this reason, I'll try to be consistent with regards to certain labels and subjects areas (you are welcome to let me know about tag failures and if specific tags ought to be added, this specific blog entry has been tagged with all these tags in order to let […]
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Adam, Norm, and Will discuss flying Adam's new quadcopter, multirotor safety, and some common sense things any flyer can do to be more safe.
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I’ve started a new Twitter account @PerlRegex for Perl regular expressions. My original account, @RegexTip, is for regular expressions in general and doesn’t go into much detail regarding any particular implementation. @PerlRegex goes into the specifics of regular expressions in Perl. Why specifically Perl regular expressions? Because Perl has the most powerful support for regular […]
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When Evernote approached Adam and me and offered to support us in building anything we wanted, I suggested we make something that would never otherwise get made. Something that was unusual, that nobody in their right mind would take the trouble to do. Something I would build, just because I can!And the first thing that came to mind was to build big spiders that would be super fast and use a tendon-like system to pull the legs around. I would use synthetic fibers that were ultra light but […]
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After watching Andrej Karpathy's slides on Generating Image Description using Deep Learning, I just came across this new arxiv preprint that changes a little bit the nonlinear functional within current deep neural networks to get very good results: Delving Deep into Rectifiers: Surpassing Human-Level Performance on ImageNet Classification by Kaiming He, Xiangyu Zhang, Shaoqing Ren, Jian Sun Rectified activation units (rectifiers) are essential for state-of-the-art neural networks. […]
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We heard a lot of excitement coming out of CES for Sling TV, Dish Network's online TV streaming service that promised an a la carte model for live cable channel subscriptions for a reasonable price. The service officially launched late last month, with a $20/month starting package that includes ESPN, CNN, Cartoon Network, and a dozen other channels. AMC was even added to the lineup this morning (though still as yet not available for Sling users). With the service opening up to everybody this […] ### February 09, 2015 + No summary available for this post. + Despite the film's tepid reviews (currently 22% on RottenTomatoes), I was compelled to watch the Wachowski siblings' new film Jupiter Ascending this weekend. It was partially due to Angela Watercutter's recent Wired column reminding me that no one makes films like the Wachowskis, even if they're more often misses than hits, of late. They're masterful world builders, and can spend$150 million to show you things you've never seen before on film. Among those in this movie: badass space cops, […]
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Remember those Where's Waldo books? (They even made a TV show about them.) Slate ran a story back in 2013 showing you the location of Waldo in all seven books in the series, but the interesting part of that story was that the authors claimed to have devised the best search strategy for finding the character. AI researcher and data visualization geek Randy Olson took Slate's data one step further, putting Waldo's locations through a genetic algorithm to devise an optimal search path. Of course, […]
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Today, me, Ben Hall (Cambridge) and Samin Ishtiaq (Microsoft Research) submitted a paper to CAV 2015, the 27th International Conference on Computer Aided Verification, to be held in San Francisco in July. CAV is dedicated to the advancement of the theory and practice of computer-aided formal analysis methods for hardware and software systems; the conference […]
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Apps move quickly on Android. No sooner have you found an app you can get cozy with, a better alternative has come along. We're here to make sure you're ahead of the curve--that you're always on the bleeding edge. That's what the Google Play App Roundup is for. Just click on the links to head to Google Play and get the best new apps and games for your device.This week there's light, a game about vikings, and an airport in need of control.Power Button FlashlightThis app actually came out a few […]
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No summary available for this post.
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he Using random projections for tensors is not the first time we see this but here let us note why: ...We overcome both these limitations using O(log(k)) random projections of the tensor. Note that our use of random projections is atypical: instead of using projections for dimensionality reduction (e.g. [32]), we use it to reduce the order of the tensor. Without further ado here is: Tensor Factorization via Matrix Factorization by Volodymyr Kuleshov, Arun Tejasvi Chaganty, Percy […]

### February 08, 2015

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The ah-ah moment probably occurred at the First French-German Mathematical Image Analysis Conference at IHP as I was watching Rene Vidal perfectly explains his subspace clustering approach [6]. The idea was to describe the data as a means of connecting datapoints that are close to each other to the exclusion of themselves. The decomposition goes as:X = XZwith the constraint diag(Z) = 0 in order to enforce the latter exclusion. From [6]   As explained two months ago in a paper by […]

### February 07, 2015

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An apology and correction Cynthia Dwork, Frank McSherry, Kobbi Nissim, and Adam Smith are the inventors of differential privacy, as formulated in their 2006 paper “Calibrating Noise to Sensitivity in Private Data Analysis,” in the proceedings of the 2006 Theory of Cryptography Conference. Today Ken and I want to talk about differential privacy again. Our […]

### February 06, 2015

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My paper with Amirali Abdullah (or should I say Amir's paper with me) got into STOC ! One aspect not discussed in the linked blog post is the connection to Partial Match (a notoriously hard problem in the data structures literature).  In brief, our result allows for a "smooth-ish" interpolation between approximate near neighbor lower bounds in $\ell_1$ and general partial match lower bounds, reinforcing the intuition that Partial Match is an "extremely asymmetric" nearest neighbor […]
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Differential Privacy Taekwondo source Cynthia Dwork is a computer scientist who is a Distinguished Scientist at Microsoft Research. She has done great work in many areas of theory, including security and privacy. Today Ken and I wish to talk about her notion of differential privacy. This concept is brilliant. It is, in our opinions, one […]
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LEGO with Friends: Patrick Norton, Part 5
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The early bird registration for VIZBI is closing after today, 7th of February 2015. Have you decided which two from the twelve tutorials you’ll sign up for this year? Below is a brief reminder of what’s on offer. MORNING SESSIONS In the morning session of the VIZBI 2015 tutorial day you can choose from the [...]