While self-driving vehicles will be revolutionary, having self-driving vehicles communicate with one another and with road infrastructure will take that revolution to the Nth degree. In a UK-first, a cross-company collaborative demonstration of these technologies working together has taken place.
Researchers at Microsoft have published details of new speech recognition technology that they say transcribes conversational speech as well as a human does. “We’ve reached human parity,” says Microsoft’s chief speech scientist Xuedong Huang in a statement. “This is an historic achievement.”
The system’s word error rate is reported to be 5.9 percent, which Microsoft says is “about equal” to professional transcriptionists asked to work on speech taken from the same Switchboard corpus of conversations. It uses neural language models that group similar words together, allowing for efficient generalization. Microsoft plans to use the technology in Cortana, its personal voice assistant for Windows and the Xbox One, as well as speech-to-text transcription software.
Although the results are impressive, it’s far from an endgame for speech recognition. Microsoft still needs to tune the technology to work as well with conversations in a wider range of more challenging real-life situations and with a broader selection of voices. And for use cases such as Cortana, much of the difficulty comes from teaching the artificial intelligence to understand the meaning of words and act on them, not just accurately hear them.
I know, it doesn’t seem like there’s any possible way that a transmission system could be interesting enough that we’d dedicate an entire article (and video!) to it. But here we are: As soon as SRI explained how their new Abacus transmission worked, we were absolutely sure that it was cool enough to share. In a nutshell, here’s why: It’s the first new rotary transmission design since Harmonic Drive introduced its revolutionary gear system in the 1960s*, and it might give harmonic gears a literal run for their money.
The physics of most electric motors generally dictates that the motors are happiest when they’re spinning very fast. Unless you want to use them to simply spin a thing very fast, you’ll need to add a rotary transmission that can convert low torque, high speed rotation into higher torque, lower speed rotation. If you’ve got the budget, the way to do this is with a high-performance harmonic gear like the ones offered by Harmonic Drive. Roboticists like harmonic gears because they are compact, have high gear ratios, and, perhaps most important, don’t have backlash, which is essentially the amount of wiggle room that you get with conventional gear-based transmissions. In robotic applications, wiggling means that you don’t know exactly where everything is all the time, making precision tasks something between irritating and impossible.
Harmonic gears are great, but they’re also superduper expensive, because they require all kinds of precision machining. Alexander Kernbaum, a senior research engineer at SRI International, has come up with an entirely new rotary transmission called the Abacus drive, and it’s a beautiful piece of clever engineering that offers all kinds of substantial advantages:
Concerns that artificial intelligence will pose a danger if it develops consciousness are misplaced, says Jim Davies.
Posted in food, robotics/AI | Leave a Comment on Honda Robotics
The REAL danger of AI… wink
Robots (Emily Blunt, Mikey Day) meant to deliver food repeatedly malfunction during a presentation.
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Aurora Flight Sciences is flying a Cessna Caravan fitted with a robotic copilot as it completes work under Phase 2 of a DARPA program to demonstrate automation that could reduce the crew required to fly existing aircraft.
Under DARPA’s Alias (Aircrew Labor In-cockpit Automation System) program, Aurora has also demonstrated its technical approach on a Diamond DA42 piston twin and is installing the system in a Bell UH-1 helicopter.
Could we see this technology offered via subscription as the a new home screening method to check for cancerous polyps or cells in the stomach, colon, or esophagus?
The human intestine is a nearly 8-m-long cache of bacteria, both good and bad. When disease-carrying microbes colonize different sections of the gut, they can cause problems like inflammation and diarrhea. Researchers have now developed tiny, self-propelling, biocompatible robots that could deliver drugs or imaging agents to a targeted section of the intestine (ACS Nano 2016, DOI: 10.1021/acsnano.6b04795). When swallowed, the devices pass through the stomach, travel a preset distance, and embed themselves in the intestinal lining.
A team led by Liangfang Zhang and Joseph Wang of the University of California, San Diego, created 15-µm-long, 5-µm-wide hollow cylinders made of gold and poly(3,4-ethylenedioxythiophene). They filled the tubes with magnesium particles and a fluorescent dye as cargo and then coated them with a pH-sensitive methacrylate-based polymer. The methacrylate coating protects the tubes from the acidic gastric fluid in the stomach, but starts to dissolve in the neutral pH intestinal fluid. By tuning the coating’s thickness, the researchers can control how far the devices travel via natural gut movement before the coating dissolves completely; thicker coatings last longer.
At the target point, after the methacrylate coating has completely dissolved, the ends of the tubes open up, exposing the magnesium particles to intestinal fluid. Magnesium reacts with water to produce hydrogen bubbles that propel the tubes forward. The propulsion causes them to collide with and be trapped within the mucus layer lining the intestine.
Glad to see others sharing this perspective.
Quantum effects could be the key to unlocking the mystery of machine learning, and maybe even consciousness.
