Remembering the Walking Robot of 1969

Each morning I pick a random music station on Netflix and enjoy some oldies but goodies while catching up on the news and downing my Starbucks-Red Bull combo. This morning I heard Bryan Adams’ Summer of 69 (still a great song). I started thinking about robotics and just how far we’ve come in the past two decades and wondered what kinds of robotic projects were around in 1969. Honestly, I had no idea what I’d find (or if I’d find anything at all). Needless to say, I was pleasantly surprised to discover the 3000 lb. monster above (actually built in 1968). Naturally, I had to research it and post my findings. Enjoy, and let me know if you would drive this beast if given the opportunity. Read More →

Robotic Telesurgery in Space

Telemedicine is a field that uses telecommunications technology to provide healthcare at a distance. Certain computer systems can be linked to a physician’s office for diagnostic purposes. Different clinics and hospitals can be linked together. In the future, telemedicine could be used to perform robotic surgeries in space. Read More →

Superintelligence Must be Carefully Tapped

I’m of the opinion that if we’re ever going to achieve long-range space exploration/colonization, human engineering of some sort will be required. This not only applies to space exploration however, but most likely the long-range survival of humanity in general. The common fear in this topic seems to always conjure up a ‘rise of the machines’ scenario when I’m discussing this with others. So I thought that today I’d post a few thoughts on how these fears might be alleviated in the future. Read More →

Robosquirrels Versus Rattlesnakes

Admittedly this post has little to do with the cosmos and is being shared primarily because I find it pretty awesome. One could claim that the parallel is that robotics used to study planetary bodies (or reptilian-like aliens) is somewhat similar – something I write about frequently – so we’ll stick with that story for this one. Regardless, this is pretty fascinating and the video is a must-see. Let me know if you see the snake strike the robosquirrel (before they slow it down). I could have sworn the rattler missed the little fella! Read More →

Next Generation Artificial Intelligence

As computer scientists this year celebrate the 100th anniversary of the birth of the mathematical genius Alan Turing, who set out the basis for digital computing in the 1930s to anticipate the electronic age, they still quest after a machine as adaptable and intelligent as the human brain.

Now, computer scientist Hava Siegelmann of the University of Massachusetts Amherst, an expert in neural networks, has taken Turing’s work to its next logical step. She is translating her 1993 discovery of what she has dubbed “Super-Turing” computation into an adaptable computational system that learns and evolves, using input from the environment in a way much more like our brains do than classic Turing-type computers. She and her post-doctoral research colleague Jeremie Cabessa report on the advance in the current issue of Neural Computation.

“This model is inspired by the brain,” she says. “It is a mathematical formulation of the brain’s neural networks with their adaptive abilities.” The authors show that when the model is installed in an environment offering constant sensory stimuli like the real world, and when all stimulus-response pairs are considered over the machine’s lifetime, the Super Turing model yields an exponentially greater repertoire of behaviors than the classical computer or Turing model. They demonstrate that the Super-Turing model is superior for human-like tasks and learning.

“Each time a Super-Turing machine gets input it literally becomes a different machine,” Siegelmann says. “You don’t want this for your PC. They are fine and fast calculators and we need them to do that. But if you want a robot to accompany a blind person to the grocery store, you’d like one that can navigate in a dynamic environment. If you want a machine to interact successfully with a human partner, you’d like one that can adapt to idiosyncratic speech, recognize facial patterns and allow interactions between partners to evolve just like we do. That’s what this model can offer.”

Classical computers work sequentially and can only operate in the very orchestrated, specific environments for which they were programmed. They can look intelligent if they’ve been told what to expect and how to respond, Siegelmann says. But they can’t take in new information or use it to improve problem-solving, provide richer alternatives or perform other higher-intelligence tasks.

In 1948, Turing himself predicted another kind of computation that would mimic life itself, but he died without developing his concept of a machine that could use what he called “adaptive inference.” In 1993, Siegelmann, then at Rutgers, showed independently in her doctoral thesis that a very different kind of computation, vastly different from the “calculating computer” model and more like Turing’s prediction of life-like intelligence, was possible. She published her findings in Science and in a book shortly after.

“I was young enough to be curious, wanting to understand why the Turing model looked really strong,” she recalls. “I tried to prove the conjecture that neural networks are very weak and instead found that some of the early work was faulty. I was surprised to find out via mathematical analysis that the neural models had some capabilities that surpass the Turing model. So I re-read Turing and found that he believed there would be an adaptive model that was stronger based on continuous calculations.”

Each step in Siegelmann’s model starts with a new Turing machine that computes once and then adapts. The size of the set of natural numbers is represented by the notation aleph-zero, א0, representing also the number of different infinite calculations possible by classical Turing machines in a real-world environment on continuously arriving inputs. By contrast, Siegelmann’s most recent analysis demonstrates that Super-Turing computation has 2א0 possible behaviors. “If the Turing machine had 300 behaviors, the Super-Turing would have 2300, more than the number of atoms in the observable universe,” she explains.

The new Super-Turing machine will not only be flexible and adaptable but economical. This means that when presented with a visual problem, for example, it will act more like our human brains and choose salient features in the environment on which to focus, rather than using its power to visually sample the entire scene as a camera does. This economy of effort, using only as much attention as needed, is another hallmark of high artificial intelligence, Siegelmann says.

“If a Turing machine is like a train on a fixed track, a Super-Turing machine is like an airplane. It can haul a heavy load, but also move in endless directions and vary its destination as needed. The Super-Turing framework allows a stimulus to actually change the computer at each computational step, behaving in a way much closer to that of the constantly adapting and evolving brain,” she adds.

Siegelmann and two colleagues recently were notified that they will receive a grant to make the first ever Super-Turing computer, based on Analog Recurrent Neural Networks. The device is expected to introduce a level of intelligence not seen before in artificial computation.

Source: University of Massachusetts at Amherst

Reference:

Cabessa, J., & Siegelmann, H. (2012). The Computational Power of Interactive Recurrent Neural Networks Neural Computation, 24 (4), 996-1019 DOI: 10.1162/NECO_a_00263

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Researchers One Step Closer to Giving Robots the Ability to “Feel”

A particular area of interest I have is the the use of robots in space exploration so I try to keep an eye out for interesting developments within the robotics field to share with you guys. I came across a recently released research paper dealing with mechanical stimuli and thought this might be of interest to those of you that share my interest. Below is the release that accompanied the paper which discusses what I think is pretty ground-breaking work. Would love to hear your thoughts on this! Read More →

Are Robots the Future of Space Exploration?

Mashable recently posted about the upcoming We Robot 2012 conference and naturally I had to check it out to see if anything space related is included. Alas it’s not but it got me thinking about the future of space exploration in terms of robotics/artificial intelligence (AI). This topic is of course always hotly debated but one worth exploring nonetheless. Read More →