Machine Learning Done Wrong — [M]ost practitioners pick the modeling algorithm they are most familiar with rather than pick the one which best suits the data. In this post, I would like to share some common mistakes (the don’t-s).
Bandits for Recommendations — A common problem for internet-based companies is: which piece of content should we display? Google has this problem (which ad to show), Facebook has this problem (which friend’s post to show), and RichRelevance has this problem (which product recommendation to show). Many of the promising solutions come from the study of the multi-armed bandit problem.
Droplets — the Droplet is almost spherical, can self-right after being poured out of a bucket, and has the hardware capabilities to organize into complex shapes with its neighbors due to accurate range and bearing. Droplets are available open-source and use cheap vibration motors and a 3D printed shell. (via Robohub)
Apple’s App Store Approval Guidelines — some of the plainest English I’ve seen, especially the Introduction. I can only aspire to that clarity. If your App looks like it was cobbled together in a few days, or you’re trying to get your first practice App into the store to impress your friends, please brace yourself for rejection. We have lots of serious developers who don’t want their quality Apps to be surrounded by amateur hour.
Cockroach — a distributed key/value datastore which supports ACID transactional semantics and versioned values as first-class features. The primary design goal is global consistency and survivability, hence the name. Cockroach aims to tolerate disk, machine, rack, and even datacenter failures with minimal latency disruption and no manual intervention. Cockroach nodes are symmetric; a design goal is one binary with minimal configuration and no required auxiliary services.
Linux Foundation Providing for Core Infrastructure Projects — press release, but interested in how they’re tackling sustainability—they’re taking on identifying worthies (glad I’m not the one who says “you’re not worthy” to a project) and being the non-profit conduit for the dosh. Interesting: implies they think the reason companies weren’t supporting necessary open source projects was some combination of being unsure who to support (projects you use, surely?) and how to get them money (ask?). (Sustainability of open source projects is a pet interest of mine)
Ford Invites Open-Source Community to Tinker Away — One example: Nelson has re-tasked the motor from a Microsoft Xbox 360 game controller to create an OpenXC shift knob that vibrates to signal gear shifts in a standard-transmission Mustang. The 3D-printed prototype shift knob uses Ford’s OpenXC research platform to link devices to the car via Bluetooth, and shares vehicle data from the on-board diagnostics port. Nelson has tested his prototype in a Ford Mustang Shelby GT500 that vibrates at the optimal time to shift.
Cost-Efficient Continuous Integration at Mozilla — CI on a big project can imply hundreds if not thousands of VMs on Amazon spinning up to handle compiles and tests. This blog post talks about Mozilla’s efforts to reduce its CI-induced spend without reducing the effectiveness of its CI practices.
textfsm — Python module which implements a template based state machine for parsing semi-formatted text. Originally developed to allow programmatic access to information returned from the command line interface (CLI) of networking devices. TextFSM was developed internally at Google and released under the Apache 2.0 licence for the benefit of the wider community.
The Money is in the Bitcoin Protocol (Vikram Kumar) — some of the basics in this post as well as how people are thinking about using the Bitcoin protocol to do some very innovative things. MUST. READ.
KeyMe — keys in the cloud. (Digital designs as backups for physical objects)
Motorola Advanced Technology and Products Group — The philosophy behind Motorola ATAP is to create an organization with the same level of appetite for technology advancement as DARPA, but with a consumer focus. It is a pretty interesting place to be. And they hired the excellent Johnny Chung Lee.
Hyperinflation in Diablo 3 — interesting discussion about how video games regulate currency availability, and how Diablo 3 appears to have messed up. several weeks after the game’s debut a source claimed that there were at least 1,000 bots active 24/7 in the Diablo 3 game world, allegedly “harvesting” (producing) 4 million virtual gold per hour. Most of the gold generated by the ruthlessly productive, rapidly adapting bots found its way to third party vendors in a black market which undercut the prices in the sanctioned, in-game auction houses.
Call Me Maybe (Kyle Kingsbury) — a series on network partitions. We’re going to learn about distributed consensus, discuss the CAP theorem’s implications, and demonstrate how different databases behave under partition.
OpenWorm (The Atlantic) — simulating the c. elegans nematode worm in software. OpenWorm isn’t like these other initiatives; it’s a scrappy, open-source project that began with a tweet and that’s coordinated on Google Hangouts by scientists spread from San Diego to Russia. If it succeeds, it will have created a first in executable biology: a simulated animal using the principles of life to exist on a computer.
BitCoin-Central Becomes Legit Bank — After all this patient work and lobbying we’re finally happy and proud to announce that Bitcoin-Central.net becomes today the first Bitcoin exchange operating within the framework of European regulations. Covered by FDIC-equivalent, can have debit or credit cards connected to the BitCoin account, can even get your salary auto-deposited into your BitCoin account.
The Antifragility of the Web (Kevin Marks) — By shielding people from the complexities of the web, by removing the fragility of links, we’re actually making things worse. We’re creating a fragility debt. Suddenly, something changes – money runs out, a pivot is declared, an aquihire happens, and the pent-up fragility is resolved in a Black Swan moment.
Recording Revenues for the Typical Artist (Digital Music News) — more than 82 percent of their revenue from paid downloads, with CDs accounting for more than 11 percent. That leaves streaming revenues – including Spotify – with a scant 6.5 percent contribution. (via Simon Grigg)
Chinese SMS Payment Malware — the virus — which lurks in wallpaper apps and ‘activates’ post-download – quietly gains access to users’ SMS functionality before exploiting a vulnerability within China Mobile’s SMS payment gateway to carry out transactions and access data.
Blocker Flash Cards (Gamasutra) — a collection of common ways game developers try to stall progress on something they don’t like. Not common to the games industry, though: I think I’ve encountered every single one of the tactics in various guises. In other news, many human beings are passive-aggressive meatsacks waiting to be composted for the good of the planet.