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OpenAI vs. Deepmind in river raid ATARI.

AI research has a long history of repurposing old ideas that have gone out of style. Now researchers at Elon Musk’s open source AI project have revisited “neuroevolution,” a field that has been around since the 1980s, and achieved state-of-the-art results.

The group, led by OpenAI’s research director Ilya Sutskever, has been exploring the use of a subset of algorithms from this field, called “evolution strategies,” which are aimed at solving optimization problems.

Continue reading “OpenAI Just Beat Google DeepMind at Atari With an Algorithm From the 80s” »

OpenAI researchers were surprised to discover that a neural network trained to predict the next character in texts from Amazon reviews taught itself to analyze sentiment. This unsupervised learning is the dream of machine learning researchers.

Much of today’s artificial intelligence (AI) relies on machine learning: where machines respond or react autonomously after learning information from a particular data set. Machine learning algorithms, in a sense, predict outcomes using previously established values. Researchers from OpenAI discovered that a machine learning system they created to predict the next character in the text of reviews from Amazon developed into an unsupervised system that could learn representations of sentiment.

“We were very surprised that our model learned an interpretable feature, and that simply predicting the next character in Amazon reviews resulted in discovering the concept of sentiment,” OpenAI, a non-profit AI research company whose investors include Elon Musk, Peter Thiel, and Sam Altman, explained on their blog. OpenAI’s neural network was able to train itself to analyze sentiment by classifying reviews as either positive or negative, and was able to generate text with a desired sentiment.

Continue reading “AI Learns to Read Sentiment Without Being Trained to Do So” »

EVER since ENIAC, the first computer that could be operated by a single person, began flashing its ring counters in 1946, human beings and calculating machines have been on a steady march towards tighter integration. Computers entered homes in the 1980s, then migrated onto laps, into pockets and around wrists. In the laboratory, computation has found its way onto molars and into eyeballs. The logical conclusion of all this is that computers will, one day, enter the brain.

This, at least, is the bet behind a company called Neuralink, just started by Elon Musk, a serial technological entrepreneur. Information about Neuralink is sparse, but trademark filings state that it will make invasive devices for treating or diagnosing neurological ailments. Mr Musk clearly has bigger plans, though. He has often tweeted cryptic messages referring to “neural lace”, a science-fictional concept invented by Iain M. Banks, a novelist, that is, in essence, a machine interface woven into the brain.

A visit to SpaceX’s careers page reveals a surprising growth plan for Musk’s 15-year-old rocket company.

After more than two years of landing its rockets after launch, SpaceX finally sent one of its used Falcon 9s back into space. The rocket took off from Cape Canaveral, Florida, this evening, sending a communications satellite into orbit, and then landed on one of SpaceX’s drone ships floating in the Atlantic Ocean. It was round two for this particular rocket, which already launched and landed during a mission in April of last year. But the Falcon 9’s relaunch marks the first time an orbital rocket has launched to space for a second time.

SpaceX CEO Elon Musk appeared on the company’s live stream shortly after the landing and spoke about the accomplishment. “It means you can fly and refly an orbital class booster, which is the most expensive part of the rocket. This is going to be, ultimately, a huge revolution in spaceflight,” he said.

Private spaceflight company Blue Origin has released the first interior photos for the New Shepard, offering a glimpse at what the finished crew capsule will look like.

New Shepard is a reusable vehicle aimed at taking tourists to the edge of space, where they can float around weightless for a few minutes. The rocket has been successfully launched and landed five times already, but no people have ridden in the capsule yet. Blue Origin is planning to take its first paying customers to space by 2018, according to CEO Jeff Bezos.

The photos of New Shepard look quite different from the interior of SpaceX’s Crew Dragon capsule. But while the New Shepard focuses on tourism, the main purpose for Crew Dragon is to send astronauts to the International Space Station. (Though CEO Elon Musk recently announced that he plans to send two tourists around the moon in the spaceship in 2018.)

Continue reading “Blue Origin releases first interior photos of the capsule that will take tourists to space” »

Elon Musk wants to connect your brain to a computer.

There’s a new Elon company and a new post about it in the works. In the meantime, here’s a brush-up.

The group says it has a more practical way to get software to learn tasks, such as steering robots, that require multiple actions.