Computers have beaten human world champions at chess and, earlier this year, the board game Go. So far, though, they have struggled at the card table. So we challenged one AI to a game.

Why is poker(扑克)so difficult? Chess and Go are “information complete” games where all players can see all the relevant information. In poker, other players' cards are hidden, making it an “information incomplete” game. Players have to guess opponents' hands from their actions—-tricky for computers. Poker has become a new benchmark for AI research. Solving poker could lead to many breakthroughs, from cyber security to driverless cars.

    Scientists believe it is only a matter of time before AI once again vanquishes humans, hence our human-machine match comes up in a game of Texas Hold's Em Limit Poker. The AI was developed by Johannes Heinrich, researcher studying machine learning at UCL. It combines two techniques: neural(神经的)networks and reinforcement learning(强化学习).

    Neural networks, to some degree, copy the structure of human brains: their processors are highly interconnected and work at the same time to solve problems. They are good at spotting patterns in huge amounts of data. Reinforcement learning is when a machine, given a task, carries it out, learning from mistakes it makes. In this case, it means playing poker against itself billions of times to get better.

    Mr Heinrich told Sky News: “Today we are presenting a new procedure that has learned in a different way, more similar to how humans learn. In particular, it is able to learn abstract patterns, represented by its neural network, which allow it to deal with new and unseen situations.”

    After two hours of quite defensive play, from the computer at least, we called it a draw.

    Overheated property markets in major cities have started to cool down after authorities took measures against speculative buying and a potential home market bubble. However, a long-term effort is needed to make the market stable and sustainable, analysts said.

    Last month, new home prices dropped in seven cities, compared with six in September, according to the National Bureau of Statistics, which monitors housing prices in 70 cities nationwide. In Shenzhen, where housing prices rocketed by more than 30 percent in the past several months, prices declined by 0.5 percent in October.

    “After first-tier cities and some key second-tier cities launched cooling measures, home prices have obviously become stable,”Liu Juanwei, NBS senior statistician, wrote in a note posted on the NBS website.

    Beijing, Tianjin, Shanghai, Xiamen and Zhengzhou began to see home prices switching from rising to dropping in the second half of October, with average prices down by between 0.1 percent and 0.4 percent compared with the first half of the month, he noted.

    Housing authorities in more than 20 cities have launched various measures against speculative buying to curb rapid home price growth, including setting stricter requirements for qualified buyers and limits on buying second and third homes.

    Yan Yuejin, an analyst with property research agency E-House China R&D Institute, said the residential property market is “digesting these policies and measures gradually, and it is likely for the market to have rational and stable prices in the near future.”

    Ma Junwei, an analyst with Deyi Realty in Shanghai, said it will require a long-term effort by regulators and local authorities to battle speculative buying while keeping supplies stable for buyers with solid demand, including those who plan to buy their first home or upgrade their housing.

    In Shanghai, real estate agents said that they have noticed that homebuyers have become more rational. “Buyers are starting to take their time and study their options. They will compare prices, designs and locations and bargain with sales representatives,”said Luo Dingjun, sales manager at Jinyu Property Marketing.“This was not the case two months ago, when they rushed to buy for fear that if they hesitated, prices would grow too fast and they would no longer be able to afford. ”

    Heading off to college this year? Here are some fashion tips from our experts you should keep in mind：

    Dress to impress: Stylist and business consultant Daniela Smith says, "Girls should keep in mind that your college professors will often be the bridge that connects you to your future career and your classmates will become your professional network. You don't need to dress like you're going to the office, but you should display an ability to properly present yourself with appropriate maturity and confidence, and look put­together."

    Logo mania (品牌狂热症): Wearing the logos of brands aimed at younger customers physically identifies you as part of that age group  so consider the targeted age group of the stores you shop at. It's tempting to load up on logos, especially well­known logos that signify high­end brands. But consider this: college is a time of self­discovery, a chance to develop your own personal style. Instead of wearing logos head to toe, "walking advertisement" style, why not express who you really are?

    Wear real pants: The combination of leggings and baggy shirts is all too common on college campuses. Smith points out that leggings, yoga pants, and sweatpants are entirely unacceptable in public unless you're exercising. Although leggings worn as pants are a common trend among high school and college girls, they are not an appropriate choice for daywear. As a young woman, your style choice should begin to reflect your maturity level. So, get rid of leggings and wear real pants!

    Keep the cute factor to a minimum: Stay away from sweaters and T-shirts with smiling animals, cartoon characters, or Hello Kitty on them. Sure, kittens might be cute, but they're not doing you any favors in the style department. Dressing too cutesy (矫揉造作的) can take years off your look, and not necessarily in a good way!

    In 1972, a social worker named Sanjit Bunker Roy founded Barefoot College in Tilonia, Rajasthan. Today the college trains women from villages for six months to build and maintain solar panels and other instruments. Barefoot College also offers education to the younger generation both during the day and at its solar bridge schools that meet by lamplight at night.

    The philosophy of Barefoot College is largely inspired by the principles of Gandhi, starting with equality beyond caste (种姓), gender or religion. As a matter of fact, women are prioritized (优先考虑) as an underserved population that is essential to bringing villages together. Another central principle of the college is self-reliance, teaching students to support and think for themselves.

    After the college's female students have completed their half-year of training, they return to their villages where they wait for solar panel parts to arrive from the college. Once they have all the pieces they need, they construct the panels and begin collecting solar energy. For each village, the college also provides solar lamps. Villagers can, in addition, order parts for other solar-powered devices, such as water heaters and cooking stoves. Once assembled, they and the lamps are powered by the solar panels.

    The effect on the villages is huge. Before the solar panels and lamps arrived  villagers had only candles to light their homes. This prevented adults from doing serious work at night, and it made studying difficult for children as well. As for physicians, they had difficulty treating patients and performing operations at night because they had to rely on flashlights.

    Now there is power for not only the electrical appliances that the college provides but also devices like televisions, radios and computers. For the first time, the villagers can even connect to the world through the Internet.

    Mark Twain left school when he was twelve. He had little school education. In spite of this, he became the most famous writer of his time. He made millions of dollars by writing. His real name was Samuel Langhorne Clemens, but he is better known all over the world as Mark Twain, his penname.

    Mark Twain was born in 1835 and he was not a healthy baby. In fact, he was not expected to live through the first winter. But with his mother's care, he managed to survive. As a boy, he caused much trouble for his parents. He used to play jokes on all his friends and neighbors. He didn't like to go to school, and he often ran away from home. He always went in the direction of the nearby Mississippi(密西西比河). He was nearly drowned nine times.

    After his father's death, Mark Twain began to work for a printer, who only provided him with food and clothing. Then, he worked as a printer, a river-boat pilot and later joined the army. But shortly after that he became a miner. During this period, he started to write short stories. Afterwards he became a full time writer.

    In 1870, Mark Twain got married. In the years that followed he wrote many books including Tom Sawyer in 1876, and Huckleberry Finn in 1884, which made him famous, and brought him great fortune.

    Unfortunately, Mark Twain got into debts in bad investments(投资) and he had to write large numbers of stories to pay these debts. In 1904, his wife died, and then three of his children passed away.

    At the age of 70, his hair was completely white. He bought many white suits and neckties. He wore nothing but white from head to foot until his death on April 21, 1910.

    I recently came in contact with celebrity magazines. My family isn't one to give money for pictures of skinny, drunk celebrities with paragraphs about their relationships and shopping cart times. Thus, I was excited to finally get a chance to read about other people's attractive yet troubled lives.

    Right away I noticed how each magazine seemed to be a copy of the other. They had headlines and pictures that were almost the same. Still, the pictures of perfectly constructed faces with cute designers outfits going on with their daily lives made me read on.

Wait, celebrities taking their dogs for walk? Spending an afternoon at a park? All of these things seemed so ordinary—things my own family and I do together often. I suddenly realized how unextraordinary the people in these magazines were. They are simply normal people who happen to have a cool job and much money. For some reason, pictures of them doing things like buying milk at the store appeal to millions of readers. Then, when these regular people mess up, their mistakes is painted onto hundreds of newspapers and internet sites.

    What if every time we made a mistake, it was made public? Have you ever failed a test? Imagine seeing pictures of you on the front of a newspaper with headlines like, "Regular Schooling Isn't Enough". You'd be embarrassed. Now, I'm not necessarily taking the celebrity's side. I'm more realizing the fact that these people we were crazy about are just ordinary human beings with many photographs following them around. Role models? I'd think not. Personally, I'd rather look up to people in any community who have accomplished a lot instead of an ordinary person walking his dog in Berverly Hills.