Posts

March 29, 2015

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2:36 PM | Send Lines of Code from Vim to R/Julia/Python REPL
Vim + Tmux + Slime Workflow Editing code in anything other than Vim seems to drain my coding stamina rapidly, but when working with a language such as R that has an interactive REPL (read evaluate print loop) it is often useful to send lines of code thereto for purposes of debugging. I have used […] The post Send Lines of Code from Vim to R/Julia/Python REPL appeared first on Lindons Log.

March 28, 2015

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7:32 PM | Links: HBR article on Women in STEM and AAUW Report
A latest article on bias issues for women in STEM by Harvard Business Review.  A slide presentation by AAUW related to their report: Solving the Equation: The Variables for Women’s Success in Engineering and Computing.  The full report can be downloaded for free here.  

March 27, 2015

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6:14 PM | The Making of Interstellar's TARS and CASE Robots
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5:30 PM | The CreatureGeeks Return! - Episode 9 - 3/27/15
Frank and Len are back for Season 2 of CreatureGeek! Frank and Len catch up on what's been happening on their off-time, what movies they have seen and also discuss the future of the show. Also, even though we say there is video with this episode, there isn't and we apologize. Len explains at the top of the show.
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3:00 PM | Hands-On with FOVE Eye Tracking VR Headset
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11:16 AM | CFP: Farnir 3/2015 (Nordic Issue)
Please spread the word: CALL FOR PAPERS: Fafnir 3/2015 (Nordic issue) Fafnir – Nordic Journal of Science Fiction and Fantasy Research invites you to submit a paper for the upcoming edition 3/2015! Fafnir – Nordic Journal of Science Fiction and … Continue reading →
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5:00 AM | Deep Transform: Time-Domain Audio Error Correction via Probabilistic Re-Synthesis, Cocktail Party Source Separation via Probabilistic Re-Synthesis
From the same author, two preprints using deep neural networks to perform a task that is traditionally in other domain such as communication/information theory (Error Correction) or advanced matrix factorization (BSS). Welcome to the great convergence:Deep Transform: Time-Domain Audio Error Correction via Probabilistic Re-Synthesis by Andrew J.R. SimpsonIn the process of recording, storage and transmission of time-domain audio signals, errors may be introduced that are […]

March 26, 2015

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7:28 PM | Your TV is Too Small (Why You Should Get a Projector)
That weird little rainbow circle on a motor thing in the picture below? That's the color wheel for a DLP projector. More to the point, it's the color wheel that's going into my projector. It's twee and fragile, and I'm sure the old one made the tiniest ping when it shattered. I didn't hear it... but I didn't need to. The results were pretty obvious when I fired up the projector to watch a movie, and the screen was 50 shades of grey. (Sorry, couldn't resist.)The wall of grey led to two things. […]
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7:17 PM | Tips for Finding and Working with Conductive Fabric
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6:46 PM | Epic 18 Month SSD Endurance Test Is Over
We've advocated using SSDs in most PCs for several years, the benefits of having a drive with virtually no latency and a ton of bandwidth are obvious. But the longevity of flash memory used in SSDs has been worrisome--each flash memory cell can only be written to a finite number of times. That number of writes is large and SSDs use a variety of techniques to manage wear and keep your data safe when cells inevitably fail, but the manufacturer's endurance estimates for most SSDs range from […]
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6:45 PM | Replace data with measurements
To tell whether a statement about data is over-hyped, see whether it retains its meaning if you replace data with measurements. So a request like “Please send me the data from your experiment” becomes “Please send me the measurements from your experiment.” Same thing. But rousing statements about the power of data become banal or even […]
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5:13 PM | Building an FPV Racing Quadcopter, Part 4
The previousthreearticles of this series were all about getting the Strider Mini Quad assembled into an aerial racing machine. With all of those steps complete, it is now time to put the Strider in the air. I will cover my initial test flights, some configuration changes I made, and my thoughts on flying a quad racer.Test FlightsI planned for my initial test flight of the Strider to be a quick, knee-high hover in my backyard, lasting only long enough to confirm that the controls operated […]
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5:10 PM | Slow Mo Guys Film Shattering CD at 170,000FPS
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5:00 PM | In Brief: 2015 GPP Photography ShootOut Competition
Every year at the GPP Dubai Photography Festival, three guest photographers are challenged to shoot a mystery subject in just 20 minutes, from start to publish. The event--the GPP ShootOut--has featured amazing photographers like Gregory Heisler, David Hobby, and Zack Arias, to name a few. This year's surprise subject was the idea of "intimacy between strangers." It's a great look into the thought process and execution of professional photographers, each with their own specialties and style. […]
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3:00 PM | Thesis: Compressive Power Spectral Analysis by Dyonisius Ariananda
Compressive Power Spectral Analysis by Dyonisius Ariananda At the heart of digital signal processing (DSP) are the sampling and quantization processes, which convert analog signals into discrete samples and which are implemented in the form of analog to digital converters (ADCs). In some recent applications, there is an increased demand for DSP applications to process signals having a very wide bandwidth. For such signals, the minimum allowable sampling rate is also very high and this has put a […]
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1:30 PM | Flying FPV Multi-rotors with Team Blacksheep
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12:30 PM | Clinical trials and machine learning
Arguments over the difference between statistics and machine learning are often pointless. There is a huge overlap between the two approaches to analyzing data, sometimes obscured by differences in vocabulary. However, there is one distinction that is helpful. Statistics aims to build accurate models of phenomena, implicitly leaving the exploitation of these models to others. Machine learning aims to solve […]
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7:00 AM | Episode 294 - The Virtual Minute - 3/26/2015
This week, Will, Norm, and Jeremy discuss the latest in virtual reality news, YouTube's Twitch competitor, Fantastical 2's high price, the PS4 update that adds suspend and resume, and that badass TIE Fighter animated short. Enjoy!
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5:00 AM | Real-time Dynamic MRI Reconstruction using Stacked Denoising Autoencoder
Great convergence, here we come ! From the paper:The dataset contains about 17424 volumes; and multiple slices in each volume. In total we have used about 100,000 images for training the SDAE's...Unfortunately, for these datasets, the fully sampled k-space scans are not available. Therefore the reconstruction results obtained from [8] is taken as the basis images for comparison.Using time dependent images reconstructed from some unknown algorithm and comparing it with the temporal […]

March 25, 2015

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6:57 PM | Why Your Netflix Traffic is Slow?
Regarding Why Your Netflix Traffic is Slow, and Why the Open Internet Order Won’t (Necessarily) Make It Faster by Nick Feamster, I'm having significant difficulties with this paragraph: Comcast claims that Netflix was sending traffic at such high volumes as to intentionally congest the links between different transit ISPs and Comcast, essentially taking a page from Norton’s “peering playbook” and forcing Comcast and its peers (i.e., the transit providers, Cogent, Level […]
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4:00 PM | Building an FPV Racing Quadcopter, Part 3
Through the firsttwo articles of this series, I assembled the bulk of the Strider Mini Quad frame, installed the propulsion system, and configured the flight controller. This time around, I will concentrate on the components of the First Person View (FPV) system, as well as the camera used to record in-flight videos.The FPV SystemThe components that I chose for the Strider’s FPV system are quite common. The camera is a PZ0420 with a 2.8mm lens and IR filter. It mounts directly to the […]
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3:45 PM | The State of Computer Vision Research
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3:00 PM | The Best Wi-Fi Hotspot You Can Buy
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 regularly travel with devices needing Wi-Fi, get Verizon's Jetpack MiFi 6620L. Its battery life is among the best we’ve seen in hotspots, it runs on the largest and fastest U.S. LTE network, and its pricing is competitive.Is my smartphone enough?Just about every smartphone can act as a hotspot, sharing its connection over Wi-Fi with tablets or […]
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2:00 PM | Android Tablet Roundup: Which Tablet Is Right for You?
Android tablets are going through an interesting transition right now. We're seeing the first few hints of 64-bit support, 4:3 screens, and some powerful gaming features. However, these products are still imperfect. I don't think there's such a thing as the perfect Android tablet for everyone right now, but there are a few good ones that might work well for you.Let's check out all the top tablets on the market and see what they all have going for them.Nexus 9If you like having access to the […]
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6:36 AM | Test Driving the BMW i3 Electric Car
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5:00 AM | Improving M-SBL for Joint Sparse Recovery using a Subspace Penalty
This is very interesting. In the area of sparsity seeking solvers M-SBL is with AMP one of the interesting solvers to follow. This is in part due to the good results Zhilin Zhang got with block sparsity and non sparse signals in the past.The authors of the following paper change the regularization term of that algorithm and seem to have even better phase transitions for sparse signals. Without further ado:Improving M-SBL for Joint Sparse Recovery using a Subspace Penalty by Jong Chul Ye, Jong […]
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12:47 AM | Is It New?
How to tell algorithms apart Edgar Daylight was trained both as a computer scientist and as a historian. He writes a historical blog themed for his near-namesake Edsger Dijkstra, titled, “Dijkstra’s Rallying Cry for Generalization.” He is a co-author with Don Knuth of the 2014 book: Algorithmic Barriers Failing: P=NP?, which consists of a series […]

March 24, 2015

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9:26 PM | Paul Johnson's TIE Fighter Animated Short
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2:05 PM | Building an FPV Racing Quadcopter, Part 2
In the first installment of this series, I assembled most of the frame components of the Strider Mini Quad. I also installed and soldered the motors and ESCs. Although the flight controller was installed in the frame, it still required attachment of the various wires and configuration of the firmware within. Let’s focus on those tasks and keep moving.Plugging in the CC3DThe flight controller is the nerve center of any multi-rotor. It takes your control inputs and the data from its onboard […]
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1:21 PM | Fitting a triangular distribution
Sometimes you only need a rough fit to some data and a triangular distribution will do. As the name implies, this is a distribution whose density function graph is a triangle. The triangle is determined by its base, running between points a and b, and a point c somewhere in between where the altitude intersects the base. […]
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