White House Presses for Drone Rule Book

WASHINGTON — Facing the possibility that President Obama might not win a second term, his administration accelerated work in the weeks before the election to develop explicit rules for the targeted killing of terrorists by unmanned drones, so that a new president would inherit clear standards and procedures, according to two administration officials.

The matter may have lost some urgency after Nov. 6. But with more than 300 drone strikes and some 2,500 people killed by the Central Intelligence Agency and the military since Mr. Obama first took office, the administration is still pushing to make the rules formal and resolve internal uncertainty and disagreement about exactly when lethal action is justified.

Mr. Obama and his advisers are still debating whether remote-control killing should be a measure of last resort against imminent threats to the United States, or a more flexible tool, available to help allied governments attack their enemies or to prevent militants from controlling territory.

Though publicly the administration presents a united front on the use of drones, behind the scenes there is longstanding tension. The Defense Department and the C.I.A. continue to press for greater latitude to carry out strikes; Justice Department and State Department officials, and the president’s counterterrorism adviser, John O. Brennan, have argued for restraint, officials involved in the discussions say.

More broadly, the administration’s legal reasoning has not persuaded many other countries that the strikes are acceptable under international law. For years before the Sept. 11, 2001, attacks, the United States routinely condemned targeted killings of suspected terrorists by Israel, and most countries still object to such measures.

But since the first targeted killing by the United States in 2002, two administrations have taken the position that the United States is at war with Al Qaeda and its allies and can legally defend itself by striking its enemies wherever they are found.

Partly because United Nations officials know that the United States is setting a legal and ethical precedent for other countries developing armed drones, the U.N. plans to open a unit in Geneva early next year to investigate American drone strikes.

The attempt to write a formal rule book for targeted killing began last summer after news reports on the drone program, started under President George W. Bush and expanded by Mr. Obama, revealed some details of the president’s role in the shifting procedures for compiling “kill lists” and approving strikes. Though national security officials insist that the process is meticulous and lawful, the president and top aides believe it should be institutionalized, a course of action that seemed particularly urgent when it appeared that Mitt Romney might win the presidency.

“There was concern that the levers might no longer be in our hands,” said one official, speaking on condition of anonymity. With a continuing debate about the proper limits of drone strikes, Mr. Obama did not want to leave an “amorphous” program to his successor, the official said. The effort, which would have been rushed to completion by January had Mr. Romney won, will now be finished at a more leisurely pace, the official said.

Mr. Obama himself, in little-noticed remarks, has acknowledged that the legal governance of drone strikes is still a work in progress.

“One of the things we’ve got to do is put a legal architecture in place, and we need Congressional help in order to do that, to make sure that not only am I reined in but any president’s reined in terms of some of the decisions that we’re making,” Mr. Obama told Jon Stewart in an appearance on “The Daily Show” on Oct. 18.

In an interview with Mark Bowden for a new book on the killing of Osama bin Laden, “The Finish,” Mr. Obama said that “creating a legal structure, processes, with oversight checks on how we use unmanned weapons, is going to be a challenge for me and my successors for some time to come.”

The president expressed wariness of the powerful temptation drones pose to policy makers. “There’s a remoteness to it that makes it tempting to think that somehow we can, without any mess on our hands, solve vexing security problems,” he said.

Despite public remarks by Mr. Obama and his aides on the legal basis for targeted killing, the program remains officially classified. In court, fighting lawsuits filed by the American Civil Liberties Union and The New York Times seeking secret legal opinions on targeted killings, the government has refused even to acknowledge the existence of the drone program in Pakistan.

But by many accounts, there has been a significant shift in the nature of the targets. In the early years, most strikes were aimed at ranking leaders of Al Qaeda thought to be plotting to attack the United States. That is the purpose Mr. Obama has emphasized, saying in a CNN interview in September that drones were used to prevent “an operational plot against the United States” and counter “terrorist networks that target the United States.”

But for at least two years in Pakistan, partly because of the C.I.A.’s success in decimating Al Qaeda’s top ranks, most strikes have been directed at militants whose main battle is with the Pakistani authorities or who fight with the Taliban against American troops in Afghanistan.

In Yemen, some strikes apparently launched by the United States killed militants who were preparing to attack Yemeni military forces. Some of those killed were wearing suicide vests, according to Yemeni news reports.

“Unless they were about to get on a flight to New York to conduct an attack, they were not an imminent threat to the United States,” said Micah Zenko, a fellow at the Council on Foreign Relations who is a critic of the strikes. “We don’t say that we’re the counterinsurgency air force of Pakistan, Yemen and Somalia, but we are.”

Then there is the matter of strikes against people whose identities are unknown. In an online video chat in January, Mr. Obama spoke of the strikes in Pakistan as “a targeted, focused effort at people who are on a list of active terrorists.” But for several years, first in Pakistan and later in Yemen, in addition to “personality strikes” against named terrorists, the C.I.A. and the military have carried out “signature strikes” against groups of suspected, unknown militants.

Originally that term was used to suggest the specific “signature” of a known high-level terrorist, such as his vehicle parked at a meeting place. But the word evolved to mean the “signature” of militants in general — for instance, young men toting arms in an area controlled by extremist groups. Such strikes have prompted the greatest conflict inside the Obama administration, with some officials questioning whether killing unidentified fighters is legally justified or worth the local backlash.

Many people inside and outside the government have argued for far greater candor about all of the strikes, saying excessive secrecy has prevented public debate in Congress or a full explanation of their rationale. Experts say the strikes are deeply unpopular both in Pakistan and Yemen, in part because of allegations of large numbers of civilian casualties, which American officials say are exaggerated.

Gregory D. Johnsen, author of “The Last Refuge: Yemen, Al Qaeda and America’s War in Arabia,” argues that the strike strategy is backfiring in Yemen. “In Yemen, Al Qaeda is actually expanding,” Mr. Johnsen said in a recent talk at the Brookings Institution, in part because of the backlash against the strikes.

Shuja Nawaz, a Pakistan-born analyst now at the Atlantic Council in Washington, said the United States should start making public a detailed account of the results of each strike, including any collateral deaths, in part to counter propaganda from jihadist groups. “This is a grand opportunity for the Obama administration to take the drones out of the shadows and to be open about their objectives,” he said.

But the administration appears to be a long way from embracing such openness. The draft rule book for drone strikes that has been passed among agencies over the last several months is so highly classified, officials said, that it is hand-carried from office to office rather than sent by e-mail.

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Hobbits, superheroes put magic in NZ film industry

WELLINGTON, New Zealand (AP) — A crate full of sushi arrives. Workers wearing wetsuit shirts or in bare feet bustle past with slim laptops. With days to go, a buzzing intensity fills the once-dilapidated warehouses where Peter Jackson's visual-effects studio is rushing to finish the opening film in "The Hobbit" trilogy.

The fevered pace at the Weta Digital studio near Wellington will last nearly until the actors walk the red carpet Nov. 28 for the world premiere. But after "The Hobbit: An Unexpected Journey" hits theaters, there's more work to be done.

Weta Digital is the centerpiece of a filmmaking empire that Jackson and close collaborators have built in his New Zealand hometown, realizing his dream of bringing a slice of Hollywood to Wellington. It's a one-stop shop for making major movies — not only his own, but other blockbusters like "Avatar" and "The Avengers" and hoped-for blockbusters like next year's "Man of Steel."

Along the way, Jackson has become revered here, even receiving a knighthood. His humble demeanor and crumpled appearance appeal to distinctly New Zealand values, yet his modesty belies his influence. He's also attracted criticism along the way.

The special-effects workforce of 150 on "The Lord of the Rings" trilogy a decade ago now numbers 1,100. Only five of Weta Digital's workers are actual employees, however, while the rest are contractors. Many accept the situation because movie work often comes irregularly but pays well. Union leaders, though, say the workers lack labor protections existing in almost any other industry.

Like many colleagues, Weta Digital's director, Joe Letteri, came to New Zealand in 2001 to work on the "Rings" trilogy for two years. The work kept coming, so he bought a house in Wellington and stayed.

"People come here because they know it's their chance to do something really great and to get it up on the screen," he said in a recent interview. "And you want to do it in these next two weeks, because the two weeks after the movie's finished are useless."

Jackson, who declined to be interviewed for this story, launched Weta in 1993 with fellow filmmakers Jamie Selkirk and Richard Taylor. Named after an oversized New Zealand insect, the company later was split into its digital arm and Weta Workshop, which makes props and costumes.

Loving homages to the craft are present in Weta Digital's seven buildings around the green-hilled suburb of Miramar. There are old-time movie posters, prop skulls of dinosaurs and apes, and a wall of latex face impressions of actors from Chris O'Donnell to Tom Cruise.

Its huge data center, with the computing power of 30,000 laptops, resembles a milk-processing plant because only the dairy industry in New Zealand knew how to build cooling systems on such a grand scale.

Little of Weta's current work was visible. Visitors must sign confidentiality agreements, and the working areas of the facilities are off-limits. The company is secretive about any unannounced projects, beyond saying Weta will be working solidly for the next two years, when the two later "Hobbit" films are scheduled to be released.

The workforce has changed from majority American to about 60 percent New Zealanders. The only skill that's needed, Letteri says, is the ability to use a computer as a tool.

Beyond having creativity as a filmmaker, Jackson has proved a savvy businessman, Letteri says.

"The film business in general is volatile, and visual effects has to be sitting right on the crest of that wave," Letteri says. "We don't get asked to do something that somebody has seen before."

The government calculates that feature films contribute $560 million each year to New Zealand's economy. Like many countries, New Zealand offers incentives and rebates to film companies and will contribute about $100 million toward the $500 million production costs of "The Hobbit" trilogy. Almost every big budget film goes through Jackson's companies.

"New Zealand has a good reputation for delivering films on time and under budget, and Jackson has been superb at that," says John Yeabsley, a senior fellow at New Zealand's Institute of Economic Research. "Nobody has the same record or the magic ability to bring home the bacon as Sir Peter."

"You cannot overestimate the fact that Peter is a brand," says Graeme Mason, chief executive of the New Zealand Film Commission. "He's built this incredible reputational position, which has a snowball effect."

Back in 2010, however, a labor dispute erupted before filming began on "The Hobbit." Unions said they would boycott the movie if the actors didn't get to collectively negotiate. Jackson and others warned that New Zealand could lose the films to Europe. Warner Bros. executives flew to New Zealand and held a high-stakes meeting with Prime Minister John Key, whose government changed labor laws overnight to clarify that movie workers were exempt from being treated as regular employees.

Helen Kelly, president of the New Zealand Council of Trade Unions, says a compromise could easily have been reached. She says the law changes amounted to unnecessary union-busting and a "gross breach" of employment laws.

"I was very disappointed at Peter Jackson for lobbying for that," she says, "and I was furious at the government for doing it."

Weta Digital's general manager Tom Greally compared it to the construction industry, where multiple contractors and mobile workers do specific projects and then move on.

Animal rights activists said last week they plan to picket the premiere of "The Hobbit" after wranglers alleged that three horses and up to two dozen other animals died in unsafe conditions at a farm where animals were boarded for the movies. Jackson's spokesman Matt Dravitzki acknowledged two horses died preventable deaths at the farm but said the production company worked quickly to improve animal housing and safety. He rejected claims any animals were mistreated or abused.

Jackson's team pointed out that 55 percent of animal images in "The Hobbit" were computer generated at Weta. The People for the Ethical Treatment of Animals (PETA) have asked Jackson in the future to create all his animals in the studio.

Controversies aside, the rise of Weta and the expat American community in and around Miramar is visible in everything from a Mexican restaurant to yoga classes. On Halloween, which in the past was not much celebrated in New Zealand, hundreds of costumed children roamed about collecting candy. Americans gave the tradition a boost here, but the locals have embraced it.

The National Business Review newspaper estimates Jackson's personal fortune to be about $400 million, which could rise considerably if "The Hobbit" franchise succeeds. Public records show Jackson has partial ownership stakes in 21 private companies, most connected with his film empire. He's spent some of his money on philanthropy, helping save a historic church and a performance theater.

For all his influence, Jackson maintains a hobbit-like existence himself, preferring a quiet home life outside of work. In the end, many say, he seems to be driven by what has interested him from the start: telling great stories on the big screen.

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Follow Nick Perry on Twitter at http://twitter.com/nickgbperry

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Rising Consumer Optimism Fuels an Annual Spree

Worries about the economy and fiscal austerity be damned. On Black Friday, consumers were ready to shop till they dropped. And some even did, dozing off on the furniture displays in department stores offering predawn deals.

Consumers have voiced increasing optimism in recent months as employment rises and their home values (finally) go up, or at least stabilize, even as government talks about taxes and spending remain at an impasse. Bargain hunters put that upbeat mood into action on Thursday night and the wee hours of Friday morning at department and discount stores around the country.

Shoppers stood in line Friday for the 7 a.m. opening of Sam’s Club in Eagan, Minn., enduring freezing temperatures and biting winds, and clinging to free Starbuck’s Holiday Blend coffee as they collected vouchers for laptops and big-screen TVs.

“I didn’t even want it,” Meshia Flood, 36, a student from nearby Eagan, told a worker standing near the exit, referring to the 40-inch Sanyo LED TV on her cart. She and her 13-year-old daughter had come for a 96-cent Samsung Galaxy S III smartphone, but did not snag one before they disappeared minutes after opening.

Hundreds to thousands of consumers lined up outside Sears, Target, Macy’s, Old Navy and other retailers offering time-sensitive deals. Some turned up Thursday night for newly extended hours that some merchants have been experimenting with.

Bryan Everett, Target’s senior vice president for stores, said that Target’s decision to open at 9 p.m. on Thursday rather than midnight meant that there were more families in the store, and that customers stayed longer.

“Usually, it’s just a parent with a child, or mom and dad, or just a single guest in the store,” he said. “This year, we were seeing four- to five-person families.”

As a result, he said, customers stayed longer, and there was more “cross shopping.” Usually the Black Friday shoppers make a beeline for the electronics and toys, he said, but this year in addition to the surge in big-screen LCD TVs, iPads, iPods and Xboxes “we saw a nice pattern of shopping in the apparel and home departments.” Children’s pajamas, blankets, sheet sets, pillows and scarves all did particularly well.

The official sales numbers will not be reported for a few days, but analysts are expecting a strong sales day, with results comparable with last year’s gain of about 3 percent, according to MasterCard Advisors SpendingPulse, which is a metric for total American retail sales across all payment forms, including cash and check. The earlier hours from a few select chains seem unlikely to increase the size of the spending pie, but they may reapportion it.

“Black Friday has always been and always will be about being first: first to open, first to price, first to offer that special item,” said Michael Brown, a partner in the retail practice of A. T. Kearney, a global management consulting firm.

He said the race to open earlier and earlier would probably continue in coming years, although there was some question about how early was too early. Some Midtown Manhattan stores that were open at midday on Thursday did not seem to get blockbuster traffic, at least compared with the postdinner doorbusters.

In addition to longer hours, stores also experimented with ways to slow the creep of online competitors onto their turf and prevent consumers from using brick-and-mortar locations as showrooms for the goods they planned to purchase online.

Best Buy, Target, Fry’s Electronics and Staples all agreed to match prices with at least some online competitors. Physical stores may also benefit from decisions by some states to force online retailers to pay sales taxes. That is chipping away at the pricing edge of some major companies like Amazon.com, according to Nelson Granados, an assistant professor at the Graziadio School of Business and Management at Pepperdine University.

Reporting was contributed by Christina Capecchi from Eagan, Minn.; Christopher Maag from Columbus, Ohio; Cindy Wolff from Memphis; and Rebecca Fairley Raney from Upland, Calif.

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Secret message found with carrier pigeon may never be deciphered

British man finds carrier pigeon skeleton in his fireplace with unbreakable secret code (Reuters)

Before military forces had secure cell phones and satellite communications, they used carrier pigeons. The highly trained birds delivered sensitive information from one location to another during  World War II. Often, the birds found the intended recipient. But not always.

A dead pigeon was recently discovered inside a chimney in Surrey, England. There for roughly 70 years, the bird had a curious canister attached to its leg. Inside was a coded message that has stumped the experts.

The code features a series of 27 groups of five letters. According to Reuters, nobody from Britain’s Government Communications Headquarters has been able to decipher it. The message was sent by a Sgt. W. Scott to someone or something identified as “Xo2.”

A spokesperson remarked, “Although it is disappointing that we cannot yet read the message brought back by a brave carrier pigeon, it is a tribute to the skills of the wartime code-makers that, despite working under severe pressure, they devised a code that was indecipherable both then and now.”

The bird was discovered by a homeowner doing renovations earlier this month. In an interview with Reuters, David Martin remarked that bits of birds kept falling from the chimney. Eventually, Margin saw the red canister and speculated that it might contain a secret message. And it seems as if the message will always be secret.

Carrier pigeons played a vital role in wars due to their incredible homing skills. All told, U.K. forces used about 250,000 of the birds during World War II.

Wireless News Headlines – Yahoo! News

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'Dallas' star Larry Hagman dies in Texas

LOS ANGELES (AP) — Larry Hagman, whose predatory oil baron J.R. Ewing on television's long-running nighttime soap opera "Dallas" became a symbol for 1980s greed and coaxed forth a Texas-sized gusher of TV ratings, has died. He was 81.

Hagman, who returned as J.R. in a new edition of "Dallas" this year, passed away Friday afternoon due to complications from his battle with cancer, according to a statement from the family provided to The Associated Press by Warner Bros., producer of "Dallas."

"Larry was back in his beloved hometown of Dallas, re-enacting the iconic role he loved the most," the family said. "Larry's family and closest friends had joined him in Dallas for the Thanksgiving holiday."

Linda Gray, his on-screen wife in the original series and the sequel, was with Hagman when he died in a Dallas hospital, said her publicist, Jeffrey Lane.

"He brought joy to everyone he knew. He was creative, generous, funny, loving and talented, and I will miss him enormously. He was an original and lived life to the fullest," Gray said in a statement.

Hagman was diagnosed in 1992 with cirrhosis of the liver and acknowledged that he had drank heavily for years. In 1995, a malignant tumor was discovered on his liver and he underwent a transplant.

Years before "Dallas," Hagman had gained TV fame as a nice guy with the fluffy 1965-70 NBC comedy "I Dream of Jeannie," in which he played Capt. Tony Nelson, an astronaut whose life is disrupted when he finds a comely genie, portrayed by Barbara Eden, and takes her home to live with him.

He also starred in two short-lived sitcoms, "The Good Life" (NBC, 1971-72) and "Here We Go Again" (ABC, 1973). His film work included well-regarded performances in "The Group," ''Harry and Tonto" and "Primary Colors."

But it was Hagman's masterful portrayal of the charmingly loathsome J.R. that brought him his greatest stardom. The CBS serial drama about the Ewing clan and those in their orbit aired from April 1978 to May 1991.

The "Who shot J.R.?" story twist, in which Hagman's character was nearly murdered in a cliffhanger episode, fueled international speculation and millions of dollars in betting-parlour wagers. It also helped give the series a ratings record for the time.

When the answer was revealed in a November 1980 episode, an average 41 million viewers tuned in to make "Dallas" the second most-watched entertainment show of all time, trailing only the "MASH" finale in 1983 with 50 million viewers.

It was J.R.'s sister-in-law, Kristin (Mary Crosby) who plugged him — he had made her pregnant, then threatened to frame her as a prostitute unless she left town — but others had equal motivation.

Hagman played Ewing as a bottomless well of corruption with a charming grin: a business cheat and a faithless husband who tried to get his alcoholic wife, Sue Ellen (Linda Gray), institutionalized.

"I know what I want on J.R.'s tombstone," Hagman said in 1988. "It should say: 'Here lies upright citizen J.R. Ewing. This is the only deal he ever lost.'"

On Friday night, Victoria Principal, who co-starred in the original series, recalled Hagman as "bigger than life, on-screen and off. He is unforgettable, and irreplaceable, to millions of fans around the world, and in the hearts of each of us, who was lucky enough to know and love him."

Ten episodes of the new edition of "Dallas" aired this past summer and proved a hit for TNT. Filming had been completed for five of the episodes for the second season and work on the sixth episode was in progress, the network said.

There was no immediate comment from Warner or TNT on how the series would deal with Hagman's loss.

In 2006, Hagman did a guest shot on FX's drama series "Nip/Tuck," playing a macho business mogul. He also got new exposure in recent years with the DVD releases of "I Dream of Jeannie" and "Dallas."

The Fort Worth, Texas, native was the son of singer-actress Mary Martin, who starred in such classics as "South Pacific" and "Peter Pan." Martin was still in her teens when he was born in 1931 during her marriage to attorney Ben Hagman.

As a youngster, Hagman gained a reputation for mischief-making as he was bumped from one private school to another. He made a stab at New York theater in the early 1950s, then served in the Air Force from 1952-56 in England.

While there, he met and married young Swedish designer Maj Axelsson. The couple had two children, Preston and Heidi, and were longtime residents of the Malibu beach colony that is home to many celebrities.

Hagman returned to acting and found work in the theater and in such TV series as "The U.S. Steel Hour," ''The Defenders" and "Sea Hunt." His first continuing role was as lawyer Ed Gibson on the daytime serial "The Edge of Night" (1961-63).

He called his 2001 memoir "Hello Darlin': Tall (and Absolutely True) Tales about My Life."

"I didn't put anything in that I thought was going to hurt someone or compromise them in any way," he told The Associated Press at the time.

After his transplant, he became an advocate for organ donation and volunteered at a hospital to help frightened patients.

"I counsel, encourage, meet them when they come in for their operations, and after," he said in 1996. "I try to offer some solace, like 'Don't be afraid, it will be a little uncomfortable for a brief time, but you'll be OK.' "

He also was an anti-smoking activist who took part in "Great American Smoke-Out" campaigns.

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AP Television Writer Frazier Moore in New York contributed to this report.

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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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Military Analysis: For Israel, Gaza Conflict Is Test for an Iran Confrontation

Menahem Kahana/Agence France-Presse — Getty Images

An Israeli missile is launched from a battery. Officials said their antimissile system shot down 88 percent of all assigned targets.

WASHINGTON — The conflict that ended, for now, in a cease-fire between Hamas and Israel seemed like the latest episode in a periodic showdown. But there was a second, strategic agenda unfolding, according to American and Israeli officials: The exchange was something of a practice run for any future armed confrontation with Iran, featuring improved rockets that can reach Jerusalem and new antimissile systems to counter them.

It is Iran, of course, that most preoccupies Prime Minister Benjamin Netanyahu and President Obama. While disagreeing on tactics, both have made it clear that time is short, probably measured in months, to resolve the standoff over Iran’s nuclear program.

And one key to their war-gaming has been cutting off Iran’s ability to slip next-generation missiles into the Gaza Strip or Lebanon, where they could be launched by Iran’s surrogates, Hamas, Hezbollah and Islamic Jihad, during any crisis over sanctions or an Israeli strike on Iran’s nuclear facilities.

Michael B. Oren, the Israeli ambassador to the United States and a military historian, likened the insertion of Iranian missiles into Gaza to the Cuban missile crisis.

“In the Cuban missile crisis, the U.S. was not confronting Cuba, but rather the Soviet Union,” Mr. Oren said Wednesday, as the cease-fire was declared. “In Operation Pillar of Defense,” the name the Israel Defense Force gave the Gaza operation, “Israel was not confronting Gaza, but Iran.”

It is an imprecise analogy. What the Soviet Union was slipping into Cuba 50 years ago was a nuclear arsenal. In Gaza, the rockets and parts that came from Iran were conventional, and, as the Israelis learned, still have significant accuracy problems. But from one point of view, Israel was using the Gaza battle to learn the capabilities of Hamas and Islamic Jihad — the group that has the closest ties to Iran — as well as to disrupt those links.

Indeed, the first strike in the eight-day conflict between Hamas and Israel arguably took place nearly a month before the fighting began — in Khartoum, the capital of Sudan, as another mysterious explosion in the shadow war with Iran.

A factory said to be producing light arms blew up in spectacular fashion on Oct. 22, and within two days the Sudanese charged that it had been hit by four Israeli warplanes that easily penetrated the country’s airspace. Israelis will not talk about it. But Israeli and American officials maintain that Sudan has long been a prime transit point for smuggling Iranian Fajr rockets, the kind that Hamas launched against Tel Aviv and Jerusalem over recent days.

The missile defense campaign that ensued over Israeli territory is being described as the most intense yet in real combat anywhere — and as having the potential to change warfare in the same way that novel applications of air power in the Spanish Civil War shaped combat in the skies ever since.

Of course, a conflict with Iran, if a last-ditch effort to restart negotiations fails, would look different than what has just occurred. Just weeks before the outbreak in Gaza, the United States and European and Persian Gulf Arab allies were practicing at sea, working on clearing mines that might be dropped in shipping lanes in the Strait of Hormuz.

But in the Israeli and American contingency planning, Israel would face three tiers of threat in a conflict with Iran: the short-range missiles that have been lobbed in this campaign, medium-range rockets fielded by Hezbollah in Lebanon and long-range missiles from Iran.

The last of those three could include the Shahab-3, the missile Israeli and American intelligence believe could someday be fitted with a nuclear weapon if Iran ever succeeded in developing one and — the harder task — shrinking it to fit a warhead.

A United States Army air defense officer said that the American and Israeli militaries were “absolutely learning a lot” from this campaign that may contribute to a more effective “integration of all those tiered systems into a layered approach.”

The goal, and the challenge, is to link short-, medium- and long-range missile defense radar systems and interceptors against the different types of threats that may emerge in the next conflict.

Even so, a historic battle of missile versus missile defense has played out in the skies over Israel, with Israeli officials saying their Iron Dome system shot down 350 incoming rockets — 88 percent of all targets assigned to the missile defense interceptors. Israeli officials declined to specify the number of interceptors on hand to reload their missile-defense batteries.

Before the conflict began, Hamas was estimated to have amassed an arsenal of 10,000 to 12,000 rockets. Israeli officials say their pre-emptive strikes on Hamas rocket depots severely reduced the arsenal of missiles, both those provided by Iran and some built in Gaza on a Syrian design.

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Halle Berry's ex arrested after fight at her house

LOS ANGELES (AP) — Halle Berry's ex-boyfriend Gabriel Aubry was arrested for investigation of battery Thursday after he and the Oscar-winning actress's current boyfriend got into a fight at her Hollywood Hills home, police said.

Aubry, 37, was booked for investigation of a battery, a misdemeanor, and released on $20,000 bail, according to online jail records. He's scheduled to appear in court Dec. 13.

Aubry came to Berry's house Thanksgiving morning and police responded to a report of an assault, said Los Angeles Police Officer Julie Boyer. Aubry was injured in the altercation and was taken to a hospital where he was treated and released.

Emails sent to Berry's publicist, Meredith O'Sullivan, and Aubry's family law attorney, Gary Fishbein, were not immediately returned.

Berry and Aubry have been involved in a custody dispute involving their 4-year-old daughter, Nahla. The proceedings were sealed because the former couple are not married. Both appeared in the case as recently as Nov. 9, but neither side commented on the outcome of the hearing.

Berry has been dating French actor Olivier Martinez, and he said earlier this year that they are engaged.

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Recipes for Health: Pear Clafoutis — Recipes for Health

Andrew Scrivani for The New York Times NYTCREDIT:

If you don’t want to make a crust but want something tartlike for your Thanksgiving dessert, a clafoutis, which is something like a cross between a flan and a pancake, is a great choice. It’s a very easy dessert, yet it’s always impressive.

2 tablespoons pear eau-de-vie or liqueur (optional)

2 tablespoons mild-flavored honey, like clover

2 pounds ripe but firm pears, like Bartlett or Comice

3 large eggs

1 vanilla bean, scraped

1/3 cup sugar

2/3 cup sifted unbleached white flour

1/2 cup plain yogurt

1/2 cup milk

pinch of salt

1. Combine the pear eau-de-vie and the honey in a bowl. Peel, core and slice the pears and toss with the mixture. Let sit for 30 minutes.

2. Preheat the oven to 375 degrees. Butter a 10-inch ceramic tart pan or baking dish.

3. In the bowl of an electric mixer or with a whisk, beat together the eggs, the seeds from the vanilla bean and the sugar. Pour off the marinade from the pears and add to the egg mixture. Gradually beat in the flour, then beat in the yogurt, milk and salt.

4. Arrange the pears in the baking dish. Pour on the batter. Place in the oven and bake 40 to 50 minutes, until the top is beginning to brown. Serve hot or warm.

Yield: 8 servings.

Advance preparation: Although this is best served warm, you can allow it to cool completely and serve it at room temperature. It will hold for several hours out of the refrigerator. Leftovers make a nice breakfast treat.

Nutritional information per serving: 195 calories; 2 grams fat; 1 gram saturated fat; 0 grams polyunsaturated fat; 1 gram monounsaturated fat; 71 milligrams cholesterol; 40 grams carbohydrates; 4 grams dietary fiber; 47 milligrams sodium; 5 grams protein

Martha Rose Shulman is the author of “The Very Best of Recipes for Health.”

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News Analysis: Case Casts a Shadow on a Hedge Fund Mogul

In 2010, the billionaire hedge fund manager Steven A. Cohen gave a rare interview to Vanity Fair. He said that he wanted to combat persistent rumors that his firm, SAC Capital Advisors, routinely violated securities laws by trading on confidential information.

“In some respects I feel like Don Quixote fighting windmills,” Mr. Cohen said at the time. “There’s a perception, and I’m trying to fight that perception.”

Federal prosecutors only heightened that perception on Tuesday, bringing a criminal case against a former SAC employee in what Preet Bharara, the United States attorney in Manhattan, who brought the charges in Federal District Court in Manhattan, called the most lucrative insider trading scheme ever charged.

And for the first time, the evidence suggests that Mr. Cohen participated in trades that the government says illegally used insider information — though prosecutors have not said that Mr. Cohen himself knew the information was confidential, and he has not been charged.

Any prosecution of Mr. Cohen would most likely hinge on the cooperation of Mathew Martoma, the former SAC employee charged in the case. Mr. Bharara said in the charges that Mr. Martoma obtained secret data from a doctor about clinical trials for an Alzheimer’s drug being developed by the companies Elan and Wyeth. The information enabled SAC to avoid losses of almost $194 million on the stocks, which it sold and then bet against, reaping $83 million in profit — a total benefit to the firm of more than $276 million. SAC executed the trades shortly after Mr. Martoma e-mailed Mr. Cohen and said he needed to discuss something important.

As to Mr. Cohen’s potential culpability in the case, the crucial issue is what Mr. Martoma told Mr. Cohen that led SAC to quickly dump $700 million worth of stock. Did he provide his boss details on why he had turned sour on Wyeth and Elan? Specifically, did he share the leak about the drug trial’s negative results and identify the source of the secret information? Through a spokesman, he said he was confident he had acted appropriately.

It appears, for now, that Mr. Martoma will fight the charges. But the crucial question, as it relates to Mr. Cohen, is whether at some point Mr. Martoma will reverse course, admit to insider trading and agree to help the government build a case against his former boss. Without Mr. Martoma’s cooperation, it is unlikely that the prosecutors have enough evidence to charge Mr. Cohen.

“This has all the markings of a case where the government goes after the smaller fish and then pressures them to flip so they can get the whale,” said Bradley D. Simon, a criminal defense lawyer and former federal prosecutor in New York.

The government has several weapons for its effort to persuade Mr. Martoma to agree to a plea, including the stiff sentences for insider trading. Under the federal sentencing guidelines, Mr. Martoma could receive more than 15 years in prison, a term that could be reduced — or avoided altogether — if he agreed to testify against Mr. Cohen.

F.B.I. agents arrested Mr. Martoma, 38, early Tuesday morning at his home in Boca Raton, Fla., a nearly 8,000-square-foot Mediterranean-style mansion on the grounds of the elite Royal Palm Yacht and Country Club. He lives there with his wife, a pediatrician, and three children. A graduate of Duke University and Stanford University’s business school, Mr. Martoma is expected to make an appearance in Federal District Court in Manhattan Monday morning.

Described by a former colleague as low-key and cerebral, Mr. Martoma is one of scores of traders who have earned millions of dollars working under Mr. Cohen and feeding him their best investment ideas. He joined SAC in 2006. In 2008, the year he participated in the alleged illegal trade, the firm paid Mr. Martoma a $9.3 million bonus. But SAC fired him in 2010 after two years of subpar performance.

Charles A. Stillman, a lawyer for Mr. Martoma, said on the day of his arrest, “What happened today is only the beginning of a process that we are confident will lead to Mr. Martoma’s full exoneration.”

It is no secret that the government has been circling Mr. Cohen since the middle of last decade, when it began its crackdown on insider trading, an investigation that has resulted in more than 70 criminal charges. Prosecutors have already linked five former SAC employees to insider trading while at the fund — securing three convictions — though none of those cases connected Mr. Cohen to any illicit activity. But the complaint filed on Tuesday puts Mr. Cohen at the center of the supposed improper conduct.

Mr. Cohen, 56, is a legend on Wall Street, having amassed a multibillion-dollar fortune by posting phenomenal investment returns averaging about 30 percent over the last two decades. Starting with a $25 million grubstake, SAC now manages about $13 billion and has 900 employees across the globe. Mr. Cohen has also emerged as a major force in the art world, owning an eclectic collection that includes works by Picasso, Warhol and Cézanne.

Prosecutors have constructed their case against Mr. Martoma, and increased the pressure on him, by securing the cooperation of Dr. Sidney Gilman, the doctor who supposedly leaked to him the Alzheimer’s drug’s trial data. The case against Mr. Martoma will depend largely on Dr. Gilman’s credibility as a witness.

Dr. Gilman, 80, a neurologist at the University of Michigan medical school, was hired by Elan and Wyeth to monitor the trial’s safety, which gave him access to secret information about the results. SAC retained Dr. Gilman as a consultant and paid him about $108,000.

At first, Dr. Gilman’s reports on the trial’s progress were positive, and SAC built a position in the two drug makers worth approximately $700 million, according to prosecutors. But then, on July 17, 2008, Dr. Gilman told Mr. Martoma that there were problems with the drug, the government said.

A few days later, Mr. Martoma e-mailed Mr. Cohen that he needed to discuss something “important,” and the two then spoke for 20 minutes, according to court filings. Over the next four days, at Mr. Cohen’s direction, SAC Capital jettisoned its entire position in the two stocks and then placed a big negative bet on the drug makers, the government said.

On July 30, after disclosure of the poor trial results, shares of Elan and Wyeth sank. According to the prosecutors’ calculations, SAC would have lost about $194 million had it kept the stock; taking a short position instead generated profits of about $83 million.

Dr. Gilman and the Justice Department have entered into a nonprosecution agreement under which he will cooperate in exchange for not being criminally charged.

Thus far, any potential evidence against Mr. Cohen is entirely circumstantial. The government’s complaint includes e-mails about secretly selling the Elan and Wyeth shares through esoteric methods like algorithms and dark pools. But that is common practice among large, sophisticated funds that do not want to alert competitors or move the stock too much. Moreover, while SAC dumped its large positions in the two stocks quickly — raising the question of what prompted it to do so — Mr. Cohen is known for a rapid-fire trading style. He frequently moves aggressively in and out of stocks while processing gobs of information fed to him by his underlings.

It would be difficult for a jury to infer anything incriminating just from the way these trades were executed.

The government in this case also lacks the powerful wiretap evidence that it has used to convict dozens others, including Raj Rajaratnam, the head of the Galleon Group. Federal agents did wiretap Mr. Cohen’s home telephone for a short period in 2008, according to a person with direct knowledge of the investigation who spoke only on the condition of anonymity. But it is unclear whether the eavesdropping, which was first reported by The Wall Street Journal, yielded any fruit.

Even without incriminating wiretap evidence, the government has brought cases that rely almost entirely on witnesses testifying against their bosses.

One of those cases is now under way in federal court in Manhattan. Prosecutors are currently trying the former hedge fund portfolio managers Anthony Chiasson of Level Global Investors and Todd Newman of Diamondback Capital Management. Prosecutors say that the two were part of a conspiracy that made about $68 million illegally trading technology stocks.

The outcome of that trial is expected to depend largely on whether the jury believes the testimony of two cooperating witnesses who admitted to the conspiracy — Spyridon Adondakis and Jesse Tortora, former junior analysts at Level Global and Diamondback. The two say they shared secret information with the defendants. Defense lawyers have attacked the witnesses’ credibility, accusing them of lying to avoid prison.

That case, too, has strong ties to SAC. Mr. Chiasson and his co-founder were star traders under Mr. Cohen before starting the now-defunct Level Global. And the owners of Diamondback are both former SAC employees; one is Mr. Cohen’s brother-in-law, Richard Schimel. Diamondback, which continues to operate, has not been accused of wrongdoing.

“SAC’s extraordinary profits have always been something of a market mystery,” said Sebastian Mallaby, the author of “More Money Than God,” a book on the history of hedge funds. “As more and more lawsuits implicate former SAC traders, we may at last understand where SAC’s profits came from.”

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