Thanksgiving weekend sales top $59 billion

More people hit the stores this Thanksgiving weekend than did last year, as big-box retailers opened their doors earlier than ever on Thursday.

Spending per shopper averaged $423 -- $25 more than last year -- from Thursday to Sunday, while total spending increased nearly 13 percent, to an estimated $59.1 billion, according to a survey the National Retail Federation released Sunday afternoon.

"I think the only way to describe the Thanksgiving openings is to call it a huge win," said Matthew Shay, the trade group's president and chief executive. Shopping, he said, "has really become an extension of the day's festivities."

About 35 million people visited stores and shopping websites Thursday, up from 29 million last year. More than double that number -- 89 million, up from 86 million -- shopped on Black Friday.

"There were more people shopping every single day of the weekend," Shay said. "Black Friday is a little bit different than historically, but it certainly is not dead."

But whether increased sales over the Thanksgiving weekend will translate to higher sales throughout the holiday shopping season remains to be seen. Analysts have been predicting mediocre sales this year, as shoppers remain uncertain about the broader economy.

Overall holiday sales are expected to increase 4.1 percent from 2011, compared with sales growth of 5.6 percent last year, the National Retail Federation said. Overall holiday sales are projected to total about $586.1 billion.

On average, Americans are expected to spend $749.51 this holiday season, up $9 from last year but still below 2006 figures.

In an effort to defy the stingy projections, some retailers opened at 8 p.m. on Thursday, while others offered to match the prices of their online competitors. But some analysts have projected that retailers would only succeed in prompting customers to buy gifts earlier in the holiday season, rather than to spend more.

Most of the weekend's shoppers -- roughly 58 percent -- bought clothing and accessories, whereas 38 percent bought electronics and 35 percent shelled out for toys.

Much of the weekend's shopping took place online, as consumers logged on to take advantage of Internet-only specials beginning early Thursday morning. The average shopper spent more than $172 online this weekend, which made up approximately 41 percent of the total weekend spending. That is up from 38 percent last year.

"There is no question that online is a real bright spot in the retail industry," Shay said. "For the first time, more than half of those who shopped this weekend said they shopped online."

Online sales are slated to pick up even more, as many retailers kick off Cyber Monday sales a day or two early. Wal-Mart began offering online discounts on Saturday, and Amazon.com started on Sunday with plans to offer deep savings for Internet shoppers all week.

The more successful retailers, analysts said, were companies such as Wal-Mart Stores Inc. and Macy's Inc., which did better at combining physical stores with their online and mobile channels into a seamless shopping experience.

"The more you can make a shopper shop multiple channels, they are at least twice as likely to be a loyal shopper and spend tons of money," Patty Edwards, chief investment officer at investment firm Trutina Financial, said.

But shoppers also tried to stay disciplined during the onslaught of deals over the so-called "Black Friday" weekend, named for the day after Thanksgiving that traditionally kicks off the November-December holiday shopping season.

A total of 52 percent of Black Friday shoppers that answered a Reuters/Ipsos poll said they stayed on budget and 34 percent said they spent less than planned. Only 14 percent said they went over budget.

Of the 404 in the poll that shopped on Black Friday, 33 percent said the deals they found were better than last year and 39 percent found them to be the same, while 15 percent said the deals were worse.

While holiday shopping appeared to be off to a good start, analysts cautioned against reading too much into one weekend's numbers. Retailers have to sustain the initial burst through the November-December holiday season, which can account for a third of annual sales and 40 to 50 percent of profits for the year.

The impact on the U.S. economy is also sizeable as consumer spending accounts for about 70 percent of all economic activity. U.S. employment has undergone a slow but steady recovery, but concerns remain about the "fiscal cliff" that threatens to produce tax increases and automatic spending cuts in January.

Staying open on Thanksgiving became more widespread this year as retailers such as Target, Sears Holdings Corp. and Toys R Us Inc. joined in, while others including Wal-Mart and Gap Inc either extended their operating hours or had more stores doing business.

One was Abercrombie & Fitch Co., where it looked like traffic "really slowed off on Friday afternoon and Saturday", Ken Perkins, president of data-monitoring firm Retail Metrics, said.

Several analysts criticized J.C. Penney Co. Inc.'s decision not to open until Friday morning, losing shoppers to competitors like Target and Macy's that opened hours earlier.

"They blew it," Edwards said.

There are two extra days between Thanksgiving and Christmas this year and one more full weekend, so the opportunity for a lull between the holidays is greater.

"A big Black Friday, it's hard to read too much into that for the rest of the season," Scott Tuhy, vice president at Moody's Investors Service, said.

Retailers may have to discount more than they want sooner to help spur more shopping, which could cut into margins, Liz Ebert, retail lead at consulting firm KPMG LLP, said.

The National Retail Federation still expects sales in November and December to rise 4.1 percent this year, below last year's 5.6 percent increase.

- The Washington Post and Reuters contributed to this report

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1 dead, 4 wounded in overnight shootings

Overnight shootings across the city left one dead and four wounded today, police said.

Two people were shot and one died in a shooting about 8:04 a.m. today in the 2300 block of West Lake Street in the West Town neighborhood, Chicago Police Department News Affairs Officer Laura Kubiak said. According to preliminary reports from police, it was a drive-by shooting and the two victims, both males, were transported to John H. Stroger, Jr. Hospital of Cook County, where one was declared dead. No other details were available.

At 4:20 a.m., a 25-year-old man was shot while riding in a vehicle in the 2400 block of South Archer Avenue in the Chinatown neighborhood, Chicago Police Department News Affairs Officer Amina Greer said.

A dark-colored vehicle pulled up next to the man's vehicle, and one or more people inside fired shots, Greer said. A bullet struck the 25-year-old man in the leg, and he was taken to Stroger hospital, where he was listed in good condition.

Earlier, about 1:20 a.m., a 19-year-old man was shot in a building hallway in the 2700 block of East 80th Street in the South Chicago neighborhood, Greer said.

Early reports suggested four assailants followed the 19-year-old into the building from the street and that one of them opened fire, Greer said. The 19-year-old was struck in the back and the buttocks and taken to Stroger, where he was listed in guarded condition, Greer said.

At 12:10 a.m. this morning, a 25-year-old man was shot in the right thigh during a sidewalk fight in the 2800 block of West Howard Street in the West Rogers Park neighborhood, News Affairs Officer Hector Alfaro said. The man was taken to Saint Francis Hospital in Evanston, where his condition was stabilized, Alfaro said.

No one is in custody in the shootings as detectives investigate.

asege@tribune.com

Twitter: @AdamSege

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Saudi telco regulator suspends Mobily prepaid sim sales

(Reuters) – Saudi Arabia‘s No.2 telecom operator Etihad Etisalat Co (Mobily) has been suspended from selling pre-paid sim cards by the industry regulator, the firm said in a statement to the kingdom’s bourse on Sunday.

Mobily’s sales of pre-paid, or pay-as-you-go, sim cards will remain halted until the company “fully meets the prepaid service provisioning requirements,” the telco said in the statement.

These requirements include a September order from regulator, Communication and Information Technology Commission (CITC). This states all pre-paid sim users must enter a personal identification number when recharging their accounts and that this number must be the same as the one registered with their mobile operator when the sim card was bought, according to a statement on the CITC website.

This measure is designed to ensure customer account details are kept up to date, the CITC said.

Mobily said the financial impact of the CITC’s decision would be “insignificant”, claiming data, corporate and postpaid revenues would meet its main growth drivers.

The firm, which competes with Saudi Telecom Co (STC) and Zain Saudi, reported a 23 percent rise in third-quarter profit in October, beating forecasts.

Prepaid mobile subscriptions are typically more popular among middle and lower income groups, with telecom operators pushing customers to shift to monthly contracts that include a data allowance.

Customers on monthly, or postpaid, contracts are also less likely to switch provider, but the bulk of customers remain on pre-paid accounts.

Mobily shares were trading down 1.4 percent at 0820 GMT on the Saudi bourse.

(Reporting by Matt Smith; Editing by Dinesh Nair)

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Rolling Stones return to mark 50 years in music

LONDON (Reuters) – The Rolling Stones take to the stage later on Sunday after a five-year hiatus to celebrate the golden jubilee of one of the most successful and enduring bands in rock and roll history.

Now in their mid-60s to early 70s, lead singer Mick Jagger, guitarists Keith Richards and Ronnie Wood and drummer Charlie Watts will perform five concerts – two at the O2 Arena in London on November 25 and 29 and three in the United States next month.

Joining them at the O2 on Sunday will be former band members Bill Wyman and Mick Taylor, the first time the two ex-Stones have performed with the group in more than 20 years.

And in a fresh announcement on Saturday, American R&B singer-songwriter Mary J. Blige and guitar great Jeff Beck have also been added to the lineup as special guests.

The flamboyant veterans behind a string of hits including “(I Can’t Get No) Satisfaction”, “You Can’t Always Get What You Want” and “Jumpin’ Jack Flash” have promised a “stunning” gig lasting more than two hours.

A sellout crowd of some 20,000 people is expected, in spite of widespread complaints from fans at ticket prices that ranged from 95 pounds ($ 150) to up to 950 pounds for a VIP seat.

Costs went far higher on secondary ticketing websites, although by Friday eBay was offering several seats to Sunday’s show at below face value and there were places still officially available at around 400 pounds apiece.

The band has defended the prices, saying that the shows are expensive to put on, although Billboard, a specialist music publication, reported that the quartet would be paid $ 25 million for the four shows first announced. A fifth was added later.

BURST OF ACTIVITY

The concerts are the culmination of a busy few months of events, rehearsals and recordings to mark 50 years since the blues-infused rockers first took to the stage at the Marquee Club on London‘s Oxford Street in July, 1962.

There has been a photo album, two new songs, a music video, a documentary film, a blitz of media appearances and a handful of warm-up gigs in Paris.

The O2 Arena was where another top band of the 1960s and 70s, Led Zeppelin, staged an eagerly awaited one-off reunion in 2007, and while the Stones have appeared together far more regularly, it is their first arena performance in six years.

One factor behind the long break has been Wood’s struggle with alcohol addition, according to Rolling Stone magazine, while Jagger and Richards also fell out over comments the guitarist made about the singer in a 2010 autobiography.

“We can’t get divorced – we’re doing it for the kids!” joked Richards in a recent interview after apologizing to Jagger.

While the rock and roll excesses of the swinging 60s and 70s are in the past for the band, and their very best songs may be behind them, music critics praised their recent single “Doom and Gloom” from the “GRRR!” greatest hits album just released.

And there have been hints from the band that the five gigs which wind up at the Newark Prudential Center on December 15 may not be the end of their reunion.

“Once the juggernaut starts rolling, it ain’t gonna stop,” Richards told Rolling Stone. “So without sort of saying definitely yes – yeah. We ain’t doing all this for four gigs!”

(Reporting by Mike Collett-White, editing by Paul Casciato)

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Indian Prostitutes’ New Autonomy Imperils AIDS Fight

Kuni Takahashi for The New York Times

Sex workers in Mumbai’s long-established red-light district, where brothels are dwindling.

MUMBAI, India — Millions once bought sex in the narrow alleys of Kamathipura, a vast red-light district here. But prostitutes with inexpensive mobile phones are luring customers elsewhere, and that is endangering the astonishing progress India has made against AIDS.

Indeed, the recent closings of hundreds of ancient brothels, while something of an economic victory for prostitutes, may one day cost them, and many others, their lives.

“The place where sex happens turns out to be an important H.I.V. prevention point,” said Saggurti Niranjan, program associate of the Population Council. “And when we don’t know where that is, we can’t help stop the transmission.”

Cellphones, those tiny gateways to modernity, have recently allowed prostitutes to shed the shackles of brothel madams and strike out on their own. But that independence has made prostitutes far harder for government and safe-sex counselors to trace. And without the advice and free condoms those counselors provide, prostitutes and their customers are returning to dangerous ways.

Studies show that prostitutes who rely on cellphones are more susceptible to H.I.V. because they are far less likely than their brothel-based peers to require their clients to wear condoms.

In interviews, prostitutes said they had surrendered some control in the bedroom in exchange for far more control over their incomes.

“Now, I get the full cash in my hand before we start,” said Neelan, a prostitute with four children whose side business in sex work is unknown to her husband and neighbors. (Neelan is a professional name, not her real one.)

“Earlier, if the customer got scared and didn’t go all the way, the madam might not charge the full amount,” she explained. “But if they back out now, I say that I have removed all my clothes and am going to keep the money.”

India has been the world’s most surprising AIDS success story. Though infections did not appear in India until 1986, many predicted the nation would soon become the epidemic’s focal point. In 2002, the C.I.A.’s National Intelligence Council predicted that India would have as many as 25 million AIDS cases by 2010. Instead, India now has about 1.5 million.

An important reason the disease never took extensive hold in India is that most women here have fewer sexual partners than in many other developing countries. Just as important was an intensive effort underwritten by the World Bank and the Bill and Melinda Gates Foundation to target high-risk groups like prostitutes, gay men and intravenous drug users.

But the Gates Foundation is now largely ending its oversight and support for AIDS prevention in India, just as efforts directed at prostitutes are becoming much more difficult. Experts say it is too early to identify how much H.I.V. infections might rise.

“Nowadays, the mobility of sex workers is huge, and contacting them is very difficult,” said Ashok Alexander, the former director in India of the Gates Foundation. “It’s a totally different challenge, and the strategies will also have to change.”

An example of the strategies that had been working can be found in Delhi’s red-light district on Garstin Bastion Road near the old Delhi railway station, where brothels have thrived since the 16th century. A walk through dark alleys, past blind beggars and up narrow, steep and deeply worn stone staircases brings customers into brightly lighted rooms teeming with scores of women brushing each other’s hair, trying on new dresses, eating snacks, performing the latest Bollywood dances, tending small children and disappearing into tiny bedrooms with nervous men who come out moments later buttoning their trousers.

A 2009 government survey found 2,000 prostitutes at Garstin Bastion (also known as G. B.) Road who served about 8,000 men a day. The government estimated that if it could deliver as many as 320,000 free condoms each month and train dozens of prostitutes to counsel safe-sex practices to their peers, AIDS infections could be significantly reduced. Instead of broadcasting safe-sex messages across the country — an expensive and inefficient strategy commonly employed in much of the world — it encircled Garstin Bastion with a firebreak of posters with messages like “Don’t take a risk, use a condom” and “When a condom is in, risk is out.”

Surprising many international AIDS experts, these and related tactics worked. Studies showed that condom use among clients of prostitutes soared.

“To the credit of the Indian strategists, their focus on these high-risk groups paid off,” said Dr. Peter Piot, the former executive director of U.N.AIDS and now director of the London School of Hygiene and Tropical Medicine. A number of other countries, following India’s example, have achieved impressive results over the past decade as well, according to the latest United Nations report, which was released last week.

Sruthi Gottipati contributed reporting in Mumbai and New Delhi.

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Rosenthal: Big Ten getting too big for its own good?

There's a lesson the empire builders at Big Ten Conference headquarters in Park Ridge would do well to heed if they can be convinced to stop peering out to the distant horizon:

Growth through acquisition is fraught with peril.

"In the business world you acquire new companies and you have to deal with different corporate cultures, different priorities and so forth," Robert Arnott, chairman of Research Affiliates LLC, an investment firm, said in an interview. "Merging them is often very messy and often fails. Here you're merging two teams into an existing conference and it creates risks. … Even college football teams have different cultures, different ways of thinking about how to win and different standards."

There undoubtedly was a logic behind each acquisition as the old Sears sought to expand and diversify its corporate profile. By the time the Chicago-area company's portfolio grew to include Allstate insurance, Coldwell Banker real estate and Dean Witter Reynolds stock brokerage, it was clear the increase in size was in no way matched by an increase in strength.

Rather than an all-powerful Colossus astride many sectors at once, it was reduced to an unfocused blob, bereft of identity, covering plenty of ground but hardly standing tall. Years after shedding its far-flung holdings, Sears has yet to regain its muscle, mojo or market share.

"It's hard to find a better example of a company that lost its mission and focus in the quest for growth," Arnott said.

"(Growth) may be partly a defensive move. It may be ego driven. In the corporate arena, you certainly see that in spades," he said. "When growth is through acquisition, you have to figure out what the real motivation is. Is it synergy, the most overused word in the finance community, or is it ego?"

Adding the University of Maryland and New Jersey's Rutgers University in 2014 will push the Big Ten to 14 schools and far beyond the Midwestern territory for which it's known. But doing so may not achieve what its backers envision.

Rather than spread the conference's brand, it may merely dilute it. The fit may be corrosive, not cohesive.

There is a school of thought that this is but the latest evidence that the Big Ten is not about athletics, academics or even the Midwest. Instead, it is just a television network, the schools content providers and student-athletes talent.

As it is, the overall TV payout is said to give each of the 12 current Big Ten schools about $21 million per year. They point to the Big Ten's lucrative deals with ESPN and its own eponymous cable network, a partnership with News Corp. They note that public schools Rutgers and Maryland are near enough to New York, Baltimore and Washington, D.C., to drive a better bargain with cable carriers.

To Big Ten Commissioner Jim Delany, a New Jersey native, the addition is more the result of a paradigm shift that has redrawn the college sports map over the past decade. Some conferences splinter. Others seize new turf. The result: Idaho's Boise State football team is poised to join the Big East Conference next year.

"Institutions that get together for academics or athletics have got to be cognizant that they are competing for students, they are competing for student athletes, they are competing for research dollars," Delany told reporters.

"When you see a Southern conference in the Midwest or you see a Southern conference in the Plains states or whether you see other conferences in the Midwest or Northeast, it impacts your recruitment. ... It impacts everything you do," he said. "At a certain point you get to a tipping point. The paradigm has shifted, and you decide on a strategy to basically position yourself for the next decade or half-century."

Big has always meant more than 10 in the Big Ten, an intercollegiate entity formed by seven Midwestern universities that now boasts 12 with the bookends of Penn State and Nebraska added in 1990 and last year, respectively. Last week's announcement of adding schools 13 and 14 was just a reminder that the conference has only had 10 member schools for 70 of its 116 years and won't again for the foreseeable future.

Rutgers President Robert Barchi said his school looked "forward as much to the collaboration and interaction we're going to have as institutions as we do to what I know will be really outstanding competition on our field of play."

But make no mistake, the Big Ten was born out of sports, specifically football. A seven-school 1896 meeting at Chicago's Palmer House had Northwestern among those still stinging from a scathing Harper's Weekly critique of college sports abuses, the Tribune reported at the time.

A prohibition on allowing scholarship and fellowship students to compete was shot down. But "a move towards the coordination of Faculty committees" in terms of standards and enforcement passed and the precursor to the Big Ten was born.

Along the way, the conference has added member schools and come to recognize that the Big Ten's image has much to say about how those institutions are perceived. Scandals already are no stranger to the Big Ten. But whether you play in a stadium or on Wall Street, the bigger one gets, the bigger target one becomes.

"Whoever's biggest draws scrutiny," said Arnott, co-author of a research paper, "The Winners Curse: Too Big to Succeed." "That means politicians, regulators, the general public generally don't root for the biggest. They look to take them down a notch, so it's harder to succeed as the largest. It's also harder to move the dial and move from success to success as you get really big."

Everyone talks about becoming too big to fail, but there's also too big to scale, companies that are unable to capitalize on the efficiencies of their increased size ostensibly because they are so big that they cannot be managed adequately.

"People talk about economies of scale. There are also vast diseconomies of scale, mostly in bureaucracies," Arnott said. "The more people you have involved, the more people you have who feel they have to have their views reflected in whatever's done. So you wind up with innovation by committee."

That's deadly. That's why companies break up, citing the need to get smaller so they can grow.

"If you break up companies into operating entities that are more nimble," Arnott said, "the opportunities to grow are no longer hamstrung by centralized bureaucracies that have to pursue synergies that don't exist."

Size matters in all fields of play. Sometimes smaller is better.

philrosenthal@tribune.com

Twitter @phil_rosenthal

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Hector 'Macho' Camacho dies at age 50

Former boxing champ Hector "Macho" Camacho, who was shot in the face this week, died on Saturday after being removed from life support, Rio Piedras Medical Director Ernesto Torres told reporters. He was 50.

Camacho had been declared brain dead on Thursday after being struck in the face in a drive-by shooting earlier in the week.

Two gunmen opened fire on Camacho and a friend, Adrian Mojica Moreno, 49, on Tuesday as they sat in a car outside a liquor store in the San Juan suburb of Bayamon, Camacho's birthplace.

Police are investigating the shooting and no arrests have been made.

Mojica Moreno, the driver of the car, was killed and Camacho was shot in the jaw. The bullet fractured two vertebrae and lodged in his shoulder, damaging the arteries that carried blood to the brain, doctors said.

Police found nine small bags of cocaine in the driver's pockets and one open in the car.

Camacho, a left-handed fighter who grew up in New York's Spanish Harlem neighborhood, had a record of 79-6-3 with 38 knockouts. His three-decade career featured fights with a "who's who" of boxing and a flamboyant style that included entering the ring in an outfit based on the Puerto Rican flag.

Camacho's body was taken to the hospital's pathology section and brought to the Institute of Forensic Sciences as required by law, Torres told reporters.

El Nuevo Dia newspaper reported the family was planning a funeral in New York, where Camacho grew up, and possibly a public wake in Puerto Rico.

(Reporting by Reuters in San Juan, Editing by Barbara Goldberg and Sandra Maler)

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China’s ‘Beijing Blues’ wins at Taiwan film fest

TAIPEI, Taiwan (AP) — China‘s “Beijing Blues” has won the best film award at Taiwan’s Golden Horse Film Festival, an event considered the Chinese-language Oscars. Hong Kong‘s Johnnie To is taking home the best director’s award

“Beijing Blues” portrays the lives of the ordinary urban dwellers through the work of a squad of plainclothes crime-hunters.

At Saturday’s ceremony, To won the award for directing “Life Without Principle,” a movie about ordinary citizens’ struggles in hard economic times.

The film has also won veteran Hong Kong actor Lau Ching Wan the best actor’s award. Lau portrays a triad thug seeking to recover money lost in a loan shark scheme.

Taiwan’s Gwei Lun-mei won the best actress award for portraying a woman involved in a romantic triangle in “GF-BF” or “Girlfriend-Boyfriend.”

Entertainment News Headlines – Yahoo! News

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Scientists See Advances in Deep Learning, a Part of Artificial Intelligence

Hao Zhang/The New York Times

A voice recognition program translated a speech given by Richard F. Rashid, Microsoft’s top scientist, into Mandarin Chinese.

Using an artificial intelligence technique inspired by theories about how the brain recognizes patterns, technology companies are reporting startling gains in fields as diverse as computer vision, speech recognition and the identification of promising new molecules for designing drugs.

The advances have led to widespread enthusiasm among researchers who design software to perform human activities like seeing, listening and thinking. They offer the promise of machines that converse with humans and perform tasks like driving cars and working in factories, raising the specter of automated robots that could replace human workers.

The technology, called deep learning, has already been put to use in services like Apple’s Siri virtual personal assistant, which is based on Nuance Communications’ speech recognition service, and in Google’s Street View, which uses machine vision to identify specific addresses.

But what is new in recent months is the growing speed and accuracy of deep-learning programs, often called artificial neural networks or just “neural nets” for their resemblance to the neural connections in the brain.

“There has been a number of stunning new results with deep-learning methods,” said Yann LeCun, a computer scientist at New York University who did pioneering research in handwriting recognition at Bell Laboratories. “The kind of jump we are seeing in the accuracy of these systems is very rare indeed.”

Artificial intelligence researchers are acutely aware of the dangers of being overly optimistic. Their field has long been plagued by outbursts of misplaced enthusiasm followed by equally striking declines.

In the 1960s, some computer scientists believed that a workable artificial intelligence system was just 10 years away. In the 1980s, a wave of commercial start-ups collapsed, leading to what some people called the “A.I. winter.”

But recent achievements have impressed a wide spectrum of computer experts. In October, for example, a team of graduate students studying with the University of Toronto computer scientist Geoffrey E. Hinton won the top prize in a contest sponsored by Merck to design software to help find molecules that might lead to new drugs.

From a data set describing the chemical structure of 15 different molecules, they used deep-learning software to determine which molecule was most likely to be an effective drug agent.

The achievement was particularly impressive because the team decided to enter the contest at the last minute and designed its software with no specific knowledge about how the molecules bind to their targets. The students were also working with a relatively small set of data; neural nets typically perform well only with very large ones.

“This is a really breathtaking result because it is the first time that deep learning won, and more significantly it won on a data set that it wouldn’t have been expected to win at,” said Anthony Goldbloom, chief executive and founder of Kaggle, a company that organizes data science competitions, including the Merck contest.

Advances in pattern recognition hold implications not just for drug development but for an array of applications, including marketing and law enforcement. With greater accuracy, for example, marketers can comb large databases of consumer behavior to get more precise information on buying habits. And improvements in facial recognition are likely to make surveillance technology cheaper and more commonplace.

Artificial neural networks, an idea going back to the 1950s, seek to mimic the way the brain absorbs information and learns from it. In recent decades, Dr. Hinton, 64 (a great-great-grandson of the 19th-century mathematician George Boole, whose work in logic is the foundation for modern digital computers), has pioneered powerful new techniques for helping the artificial networks recognize patterns.

Modern artificial neural networks are composed of an array of software components, divided into inputs, hidden layers and outputs. The arrays can be “trained” by repeated exposures to recognize patterns like images or sounds.

These techniques, aided by the growing speed and power of modern computers, have led to rapid improvements in speech recognition, drug discovery and computer vision.

Deep-learning systems have recently outperformed humans in certain limited recognition tests.

Last year, for example, a program created by scientists at the Swiss A. I. Lab at the University of Lugano won a pattern recognition contest by outperforming both competing software systems and a human expert in identifying images in a database of German traffic signs.

The winning program accurately identified 99.46 percent of the images in a set of 50,000; the top score in a group of 32 human participants was 99.22 percent, and the average for the humans was 98.84 percent.

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Walmart protests draw crowds, shoppers largely unfazed

Dozens of local workers, and hundreds nationally, took advantage of Black Friday crowds and camera crews at major retailers like Walmart to call for wage increases.

But there was little evidence that the chanting disrupted holiday shoppers.

Steven Restivo, a spokesman for Wal-Mart Stores, said the chain had done its "best Black Friday event ever" despite protests organized by the United Food and Commercial Workers International Union in Chicago and other cities.

At a Walmart in Chicago's Chatham neighborhood on the south side, only one of the store's 500 employees took part in the demonstration, the Bentonville, Ark.-based retailer said. "Almost all the folks you'll see protesting today are not Walmart associates," Restivo said. "I guess you can't believe everything you read in a union press release."

According to the union, protests took place in Miami and Washington, D.C., with additional events planned at Midwestern and Southern stores.

Walmart has so far avoided a union presence, which has become cumbersome for competitors like Jewel-Osco and Dominick's Finer Foods. Those chains have been closing stores as Walmart has expanded locally.

Separately Friday, dozens of members of the Workers Organizing Committee of Chicago and its supporters marched from the Loop to the Magnificent Mile to demand a $15 minimum wage and union contracts for downtown workers. Organized on November 15, the union has about 150 members and has received financial support from Service Employees International Union, Action Now and Stand Up Chicago.

Deborah Sims, marching Friday, said she worked at Macy's for 12 years, eventually making $13 an hour, before losing her job during the recession. She was rehired last holiday season, but at $8.50 an hour, with no benefits.

Sims said she expects retailers to turn to younger, less-experienced workers because "$8.25 an hour is going to look good to them."

Macy's did not respond to a request for comment.

Peter Gill, a spokesman for the Illinois Retail Merchants Association, called the demand for a $15 minimum wage dangerous "because people are out looking for jobs and it's tough in this economy."

He explained that if retailers were forced to nearly double the starting hourly wage, "you're going to have to cut the number of employees."

Reuters contributed to this story.

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