Showing posts with label artificial intelligence. Show all posts
Showing posts with label artificial intelligence. Show all posts

Friday, June 18, 2010

What Is I.B.M.’s Watson?

“Toured the Burj in this U.A.E. city. They say it’s the tallest tower in the world; looked over the ledge and lost my lunch.”

"This is the quintessential sort of clue you hear on the TV game show “Jeopardy!” It’s witty (the clue’s category is “Postcards From the Edge”), demands a large store of trivia and requires contestants to make confident, split-second decisions. This particular clue appeared in a mock version of the game in December, held in Hawthorne, N.Y. at one of I.B.M.’s research labs. Two contestants — Dorothy Gilmartin, a health teacher with her hair tied back in a ponytail, and Alison Kolani, a copy editor — furrowed their brows in concentration. Who would be the first to answer?

Neither, as it turned out. Both were beaten to the buzzer by the third combatant: Watson, a supercomputer."

Read the entire NY Times article by clicking on the title bar.

Friday, May 16, 2008

The Ten Smartest Animals


MSNBC.com

Introduction
EBU

Introduction


We
humans have the ability to learn, to reason and solve problems. We're
self-aware, and we’re also conscious of the presence, thoughts and
feelings of others. We make tools and practice the art of deception.
We're creative. We think abstractly. We have language and use it to
express complex ideas. All of these are arguably signs of intelligence.
Scientists may not agree on the best and fullest definition of
intelligence – but they generally agree that humans are highly
intelligent.


Other members of the animal kingdom exhibit
signs of intelligence as well, and some scientists might say the
definition of animal vs. human intelligence is merely a matter of
degree – a point that was brought home in 2005 when the London Zoo put
“Homo sapiens” on display in the exhibit pictured here. Click the
"Next" arrow above to learn about nine other species that stand out for
their smarts.


Join the discussion on Newsvine: What distinguishes our intelligence from that of other animals?


-- John Roach, msnbc.com contributor

Chimps are almost like us
Tetsuro Matsuzawa / AP

Chimps are almost like us


If
we humans possess intelligence, chimpanzees must have some as well: Our
genomes are at least 98 percent identical. Chimps make and use tools,
hunt in organized groups and engage in acts of violence. Wild troops
have distinct behaviors and customs. Field observations and lab
experiments show chimps are capable of empathy, altruism and
self-awareness. In the experiment pictured here, chimps performed
better than humans on a number memory test.

Dolphins get creative
Janet Mann / Georgetown University

Dolphins get creative


This
dolphin in Australia uses a sponge to protect her snout when foraging
on the seafloor, a tool use behavior that is passed on from mother to
daughter. Scientists say that’s just one sign of dolphin smarts. Other
signs include distinct whistles and clicks that may serve as dolphin
names, perhaps used in a type of language. A famous 1960s experiment
found that a pair of dolphins entered a tizzy of creativity once they
figured out their novel behaviors were rewarded with fish. Frustrated
human test subjects just let out a sigh of relief when they caught on
to the idea.

Elephants exhibit self-awareness
AP

Elephants exhibit self-awareness


The
sheer size of their brains suggests that elephants must know a thing or
two about the ways of the world. They have been seen consoling family
members, helping other species in times of need, playing in water and
communicating with one another via vibrations sensed in their feet. A
crowning achievement, some researchers say, was when this female Asian
elephant named Happy recognized herself in the mirror. The complex
behavior is shared only with humans, great apes and dolphins.

Cephalopods have big brains
Binyamin Hochner

Cephalopods have big brains


Are
octopi, squids and cuttlefish smart? That’s a matter of scientific
intrigue, but such cephalopods are certainly among the brainiest
invertebrates in the sea. The cephalopod brain surrounds the esophagus,
but shares with the human brain features of complexity such as folded
lobes and distinct regions for processing visual and tactile
information. The how-smart debate swirls around deciphering
observations that the creatures have a seemingly irrepressible
curiosity, a disdain for boredom, an ability to learn and the capacity
to use tools. The octopus pictured here exerts precise muscle control
to eat.

Crows get crafty
Alex Kacelnik et al. / University of Oxford

Crows get crafty


Crows
are crafty critters: They fashion tools from twigs, feathers and other
bits of debris to snare food from hard-to-reach places. A crow named
Betty, pictured here, uses a straight wire she bent into a hook to
retrieve food from a tube. The birds are born with a tool-making ethic,
but they hone their craft by watching their elders, a sign of higher
intelligence. Ravens, a type of crow, have even been shown to
manipulate the outcomes of their social interactions for added
protection and more food.

Squirrels can be deceptive
Gabriel Bouys / AFP - Getty Images file

Squirrels can be deceptive


Is
the squirrel pictured here plotting deception? Perhaps. Researchers
recently reported that the rodents put on elaborate shows of deceptive
caching to thwart would-be thieves. The behavior increased in a lab
experiment after squirrels observed humans stealing their peanuts. The
researchers called the finding a sign that squirrels can interpret
intentions of others, though it could just be a case of learned
behavior. Other studies have shown the critters make three-dimensional
maps to recall where they cache their nuts. And squirrels in California
will cover their fur in the scent of rattlesnakes to mask their own
scent from predators.

Man's best friend
University of Vienna

Man's best friend


Are
dogs intelligent or just really good at basic obedience? They can learn
to sit, lie down and fetch, for example, but can they read their
owner's intentions? Research suggests they can at least find food in
response to non-verbal cues, a type of understanding that scientists
think may be akin to the human ability to understand someone else's
point of view. The dog in the experiment pictured here accurately
discriminated between photos of dogs and photos of landscapes – an
indication the dog was able to form the concept of "dog."

Cats are adaptable
Bob Pennell / AP

Cats are adaptable


Like
dog owners, some cat owners have trained their pets to sit down, roll
over and jump through hoops. Cats learn the tricks by observation and
imitation, egged on with positive reinforcement. But training cats is
harder than dogs. Does that mean they are less intelligent? Not
necessarily. Cat experts say felines are just different. They are
solitary animals, motivated by the need to survive. This has allowed
them to adapt to a variety of domestic environments for at least 9,500
years – even the hoods of cars.

Pigs are wise � and clean
Paulo Whitaker / Reuters

Pigs are wise - and clean


Here's
the dirt on pigs: They are perhaps the smartest, cleanest domestic
animals known – more so than cats and dogs, according to some experts.
But pigs don't have sweat glands, so they roll around in the mud to
stay cool. A sign of their cleverness came from experiments in the
1990s. Pigs were trained to move a cursor on a video screen with their
snouts and used the cursor to distinguish between scribbles they knew
and those they were seeing for the first time. They learned the task as
quickly as chimpanzees.


Tuesday, April 29, 2008

Memory Training Shown to Turn Up Brainpower

From the NY Times:

"A new study has found that it may be possible to train people to be more intelligent, increasing the brainpower they had at birth.

Until now, it had been widely assumed that the kind of mental ability that allows us to solve new problems without having any relevant previous experience — what psychologists call fluid intelligence — is innate and cannot be taught (though people can raise their grades on tests of it by practicing).

But in the new study, researchers describe a method for improving this skill, along with experiments to prove it works.

The key, researchers found, was carefully structured training in working memory — the kind that allows memorization of a telephone number just long enough to dial it. This type of memory is closely related to fluid intelligence, according to background information in the article, and appears to rely on the same brain circuitry. So the researchers reasoned that improving it might lead to improvements in fluid intelligence.

First they measured the fluid intelligence of four groups of volunteers using standard tests. Then they trained each in a complicated memory task, an elaborate variation on Concentration, the child’s card game, in which they memorized simultaneously presented auditory and visual stimuli that they had to recall later.

The game was set up so that as the participants succeeded, the tasks became harder, and as they failed, the tasks became easier. This assured a high level of difficulty, adjusted individually for each participant, but not so high as to destroy motivation to keep working. The four groups underwent a half-hour of training daily for 8, 12, 17 and 19 days, respectively. At the end of each training, researchers tested the participants’ fluid intelligence again. To make sure they were not just improving their test-taking skills, the researchers compared them with control groups that took the tests without the training.

The results, published Monday in The Proceedings of the National Academy of Sciences, were striking. Although the control groups also made gains, presumably because they had practice with the fluid intelligence tests, improvement in the trained groups was substantially greater. Moreover, the longer they trained, the higher their scores were. All performers, from the weakest to the strongest, showed significant improvement.

“Intelligence has always been considered principally an immutable inherited trait,” said Susanne M. Jaeggi, a postdoctoral fellow in psychology at the University of Michigan and a co-author of the paper. “Our results show you can increase your intelligence with appropriate training.”

Why did the training work? The authors suggest several aspects of the exercise relevant to solving new problems: ignoring irrelevant items, monitoring ongoing performance, managing two tasks simultaneously and connecting related items to one another in space and time.

No one knows how long the gains will last after training stops, Dr. Jaeggi said, and the experiment’s design did not allow the researchers to determine whether more training would continue to produce further gains."

The article is linked here.

Sunday, September 09, 2007

What will happen when machines outthink us?

"At the center of a black hole there lies a point called a singularity where the laws of physics no longer make sense.

In a similar way, according to futurists gathered Saturday for a weekend conference, information technology is hurtling toward a point where machines will become smarter than their makers. If that happens, it will alter what it means to be human in ways almost impossible to conceive, they say.

"The Singularity Summit: AI and the Future of Humanity" brought together hundreds of Silicon Valley techies and scientists to imagine a future of self-programming computers and brain implants that would allow humans to think at speeds nearing today's microprocessors.

Artificial intelligence researchers at the summit warned that now is the time to develop ethical guidelines for ensuring these advances help rather than harm.

"We and our world won't be us anymore," Rodney Brooks, a robotics professor at the Massachusetts Institute of Technology, told the audience. When it comes to computers, he said, "who is us and who is them is going to become a different sort of question."

Eliezer Yudkowsky, co-founder of the Palo Alto-based Singularity Institute, which organized the summit, focuses his research on the development of so-called "friendly artificial intelligence." His greatest fear, he said, is that a brilliant inventor creates a self-improving but amoral artificial intelligence that turns hostile.

T-minus 22 years?
The first use of the term "singularity" to describe this kind of fundamental technological transformation is credited to Vernor Vinge, a California mathematician and science-fiction author.

High-tech entrepreneur Ray Kurzweil raised the profile of the singularity concept in his 2005 book "The Singularity is Near," in which he argues that the exponential pace of technological progress makes the emergence of smarter-than-human intelligence the future's only logical outcome.

Kurzweil, director of the Singularity Institute, is so confident in his predictions of the singularity that he has even set a date: 2029.

Most "singularists" feel they have strong evidence to support their claims, citing the dramatic advances in computing technology that have already occurred over the last 50 years.

In 1965, Intel co-founder Gordon Moore accurately predicted that the number of transistors on a chip should double about every two years. By comparison, singularists point out, the entire evolution of modern humans from primates has resulted in only a threefold increase in brain capacity.

With advances in biotechnology and information technology, they say, there's no scientific reason that human thinking couldn't be pushed to speeds up to a million times faster.

Is the ‘nerdocalypse’ near?
Some critics have mocked singularists for their obsession with "techno-salvation" and "techno-holocaust" _ or what some wags have called the coming "nerdocalypse." Their predictions are grounded as much in science fiction as science, the detractors claim, and may never come to pass.

But advocates argue it would be irresponsible to ignore the possibility of dire outcomes.

"Technology is heading here. It will predictably get to the point of making artificial intelligence," Yudkowsky said. "The mere fact that you cannot predict exactly when it will happen down to the day is no excuse for closing your eyes and refusing to think about it.""