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Archivo del Autor: Belen De Leon

Spam filters and AI help figure out what animals do all day

The pond-dwelling Hydra is not a very complex little animal but it does have a complex repertoire of moves that aren’t clear until after extensive human observation. Examining these moves took a long time and scientists were never sure that they had seen all of them. Now, thanks to an algorithm used to catch spam, researchers have been able to catalog all of the Hydra’s various moves, allowing them to map those moves to the neurons firing in its weird little head.

“People have used machine learning algorithms to partly analyze how a fruit fly flies, and how a worm crawls, but this is the first systematic description of an animal’s behavior,” said Rafael Yuste, a neuroscientist at Columbia University . “Now that we can measure the entirety of Hydra’s behavior in real-time, we can see if it can learn, and if so, how its neurons respond.”

Luckily, the little Hydra was pretty predictable. From the report:

In the current study, the team went a step further by attempting to catalog Hydra’s complete set of behaviors. To do so, they applied the popular “bag of words” classification algorithm to hours of footage tracking Hydra’s every move. Just as the algorithm analyzes how often words appear in a body of text to pick out topics (and flag, for example, patterns resembling spam), it cycled through the Hydra video and identified repetitive movements.

Their algorithm recognized 10 previously described behaviors, and measured how six of those behaviors responded to varying environmental conditions. To the researchers’ surprise, Hydra’s behavior barely changed. “Whether you fed it or not, turned the light on or off, it did the same thing over and over again like an Energizer bunny,” said Yuste.

The system used to map the Hydra’s reactions can be used to map more complicated systems. The researchers essentially “reverse-engineered” the Hydra and may be able to use the technique to “maintain stability and precise control in machines, from ships to planes, navigating in highly variable conditions.”

“Reverse engineering Hydra has the potential to teach us so many things,” said Shuting Han, a graduate student at Columbia.


Source: TechCrunch

DNC launches tech marketplace for Democratic candidates

The Democratic National Committee is trying to help Democrats regain the pole position as the tech-savviest political party in the U.S.

After getting Trumped in the 2016 election (pwned on security, data analysis, and at the polls), the DNC is launching I Will Run a marketplace for software, services and training to upgrade the campaigns of Democratic candidates.

Announced today by Sally Marx, the tech program manager for the DNC, the new marketplace will have a host of tech tools that campaigns can use to get off the ground, manage their progress, and ensure easy outreach to voters.

A profusion of political services have sprung up in the months since Donald Trump took the Presidency. Energized technology developers (on the whole a pretty left-leaning bunch) tuned in to politics, turned on new services and (in some cases) dropped out of their careers at high profile shops like Google, Facebook, and other Bay Are behemoths to join the political circus — or at least build tools for it.

“[We’ve] heard repeatedly from candidates and campaign staff that they are unsure what tools are out there, and simultaneously feel as if they are being fed too much information by vendors,” says Marx. “On the other hand, many of these innovators are not always reaching campaigns effectively  –  some state parties and campaigns, therefore, are in the dark about some of the innovative new technology that they should know about. And, finally, we’ve been in touch with funders and supporters who want to boost the progressive tech ecosystem, but aren’t clear on where those opportunities are.”

The marketplace, which Marx writes is explicitly for Democratic campaigns is a curated compilation of tools used by campaigns and tools tested by DNC-funded case studies.

One of the companies already on the platform is the secure messaging service, Wickr, which has been working with campaigns from both parties to secure their communications. Wickr’s one of around 56 companies and non-profits that are listed on the site in one of six categories: digital (which is crazy general), finance, research, security, training organizations, and voter outreach.

The DNC tech team will also use the site to coordinate training, volunteers and pricing for Democratic campaigns. They’re piloting the program in states like Nevada, Arizona, Washington, Texas, Florida, Massachusetts and Iowa.

For campaigns interested in seeing what wares I Will Run has on offer, the DNC tech team is taking its show on the road with a whistle-stop tour at DNC events so state parties and campaigns can demo the tech.

 


Source: TechCrunch

Amazing photos taken on the Samsung Galaxy S9 – CNET

These beautiful photos were all taken with the same model of smartphone.
Source: CNET

Virgin Hyperloop One wants to cut 4-day cargo truck journeys to 16 hours – CNET

Virgin Hyperloop One and trade logistics company DP World have created a new cargo brand “built for an on-demand world.”
Source: CNET

NASA astronauts break out guitars for ISS space jam – CNET

NASA astronauts and Russian cosmonauts get out guitars and flutes on the ISS to rock out as a band called “AstroHawaii.”
Source: CNET

The weird advantage Jeff Bezos' Blue Origin says it has on SpaceX – CNET

Jeff Bezos and Elon Musk are billionaires racing to make recyclable rockets. Musk has a big head start, but Bezos’ company is looking for ways to one-up SpaceX.
Source: CNET

Lyft edges in on Uber when it comes to business travelers – CNET

As Uber crushes the ride-hailing market, it still lost nine percent of business passengers to Lyft, according to Certify’s new report. It’s looking even more bleak for taxis.
Source: CNET

How to get Microsoft’s April 2018 Update today and experience the new Timeline

Microsoft’s April 2018 update for Windows 10 is now available to download, and we show you how to get it on your PC. There are new features — Timeline is the most notable addition to Windows — and security updates.

The post How to get Microsoft’s April 2018 Update today and experience the new Timeline appeared first on Digital Trends.


Source: Digital trends

There’s something called Bacoin now

To paraphrase a saying popularized by countless dorm room stoners: “First they ignore you, then they laugh at you, then they fight you, then you use the hype around decentralized crypto economies to sell bacon.” The latest example of this age-old adage comes to us from Oscar Meyer and involves their exciting new cryp-faux-currency, Bacoin.

The currency can be redeemed for bacon and you “mine” it by sharing the good news of bacoin with your friends. Instead of taking up massive amounts of electricity, the production of the final store of value – pig parts – requires only a massive agricultural system dedicated to the wholesale destruction of mammals that are as smart as dogs and, in the right context, quite cute. The end product, bacon, is considered by many to be far more interesting than anything Vitalik created. In short, it’s a win-win.

How does it work? It’s basically a sweepstakes. From the rules and regulations:

The value of the Bacoin is tied to overall sharing meaning that the more people who share via the Website (as outlined above), the higher the value of the Bacoin. If overall sharing is slow, the value of the Bacoin will decrease. If sharing is slow and the value of the Bacoin is low, Sponsor may increase value of Bacoin in its sole discretion. The current value of the Bacoin will be displayed on the Website. Once the Bacoin is at a value you want, follow the instructions to “cash out” and you will receive a coupon with the corresponding value (all possible values of the Bacoin coupon are outlined in Section 4 below).

The current value of a single mined bacoin is about 28 slices of bacon and the more you share the more you mine. Given that it is in no way a decentralized cryptocurrency and has nothing to do with anything technical at all I’m hard pressed to find a reason to post this here except to admire the sheer chutzpah of a company who knows exactly what breed of Reddit-loving bacon eater will jump at a chance to Tweet about pork products. To paraphrase another saying by my friend Nicholas Deleon: I hope the asteroid they promised comes for us all soon.

Bacoin. Yeah.


Source: TechCrunch

Chinese government admits collection of deleted WeChat messages

Chinese authorities revealed over the weekend that they have the capability of retrieving deleted messages from the almost universally used WeChat app. The admission doesn’t come as a surprise to many, but it’s rare for this type of questionable data collection tactic to be acknowledged publicly.

As noted by the South China Morning Post, an anti-corruption commission in Hefei province posted Saturday to social media that it has “retrieved a series of deleted WeChat conversations from a subject” as part of an investigation.

The post was deleted Sunday, but not before many had seen it and understood the ramifications. Tencent, which operates the WeChat service used by nearly a billion people (including myself), explained in a statement that “WeChat does not store any chat histories — they are only stored on users’ phones and computers.”

The technical details of this storage were not disclosed, but it seems clear from the commission’s post that they are accessible in some way to interested authorities, as many have suspected for years. The app does, of course, comply with other government requirements, such as censoring certain topics.

There are still plenty of questions, the answers to which would help explain user vulnerability: Are messages effectively encrypted at rest? Does retrieval require the user’s password and login, or can it be forced with a “master key” or backdoor? Can users permanently and totally delete messages on the WeChat platform at all?

Fears over Chinese government access to data held or handled by Chinese companies has led to a global backlash against those companies, including some countries (including the U.S.) banning Chinese-made devices and services from sensitive applications or official use altogether.


Source: TechCrunch

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