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.

    Researchers have created a backpack that has a computer and medicines in it that can help even untrained soldiers save the lives of wounded troops. Wounded soldiers have a better chance of survival if they get help soon after being hurt and are quickly taken to a hospital or clinic. But soldiers who do not have medical training may not know how to help their injured friends.

    Doctors and engineers have developed what they call an “intelligent backpack”. It has a computer and electronic measuring devices. The backpack also has robotic instruments and medicines ready to give to injured troops.

    About 16 doctors and engineers from the University of Pittsburgh, Carnegie Mellon University and several other places are working on the project. The U. S. Department of Defense has given money to the project.

    Ron Poropatich leads the project. He is a retired army surgeon. He says the backpack will help soldiers care for those who are injured. The devices included in the backpack can monitor a person's heart rate and blood pressure. The robotic instruments can even tell whether the soldier has a collapsed lung.

    The intelligent backpack's computer can compare information gathered about the injured soldier with thousands of similar cases, and quickly tell the best methods to use to save the soldier's life.

    Sometimes, it is not always possible to quickly remove the injured soldier from the battlefield. So, Dr. Poropatich says, the researchers hope to create a backpack that will have devices that can keep a soldier alive for a long time. Dr. Poropatich hopes the backpack and its instruments will be ready for testing animals in about three years.

    Exactly five years ago, on New Year's Eve, I was invited to a children's ball by a man high up in the business world, who had his connections, his circle of acquaintances, and his close friends. So it seemed as though the children's ball was merely an excuse for the parents to come together and discuss matters of interest to themselves, quite innocently and casually.

    I was an outsider, and, as I had no special matters to air, I was able to spend the evening independently of the others. There was another gentleman present who like me had just stumbled upon (偶然发现) this affair of domestic happiness. He was the first to attract my attention. His appearance was not that of a man of noble birth. He was tall, rather thin, very serious, and well dressed. Obviously he had no heart for the family celebration. The instant he went off into a corner by himself the smile disappeared from his face, and his thick dark brows knitted into a frown(皱眉). He knew no one except the host and showed every sign of being bored to death, though bravely keeping the role of thorough enjoyment to the end. Later I learned that he was a provincial, had come to the capital on some important business, had brought a letter of recommendation to our host, and our host had taken him under his protection, not at all with love. It was merely out of politeness that he had invited him to the children's ball.

    They did not play cards with him. They did not offer him cigars. No one entered into conversation with him. Possibly they recognized the bird by its feathers from a distance. Thus, my gentleman, not knowing what to do with his hands, was compelled(迫使) to spend the evening stroking (抚摸) his whiskers(胡须). His whiskers were really fine, but he stroked them so eagerly that one got the feeling that the whiskers had come into the world first and afterwards the man in order to stroke them.

    I had about 10 minutes to exercise before I had to pick up my two older daughters from school yesterday. It was a busier day than usual for me with a couple of meetings besides my regular work.

    Years ago, I would have put off my workout and would have left things for the next day. But since it was a busy day as well, I knew that I may not have all that much time either. So, I picked up my kettle-bell (哑铃) and went to town for 4 minutes.

    See, 4 minutes, if that's all you've got, is enough to give your body a great fat-burning exercise. How did I get a killer workout in 4 minutes? I used a training workout discovered 10 years ago by a Japanese Sports Scientist called a TABATA.

    It includes 20-second periods of warm-up, followed by 10-second periods of rest and 4-minute straight exercise. How is a 4-minute exercise able to burn fat? It all depends on the quality of work you do. Not on the quantity. Here's how I did it yesterday.

    You should never forget your warm-up. A TABATA workout is 20 seconds of 2-arm Kettle-bell swings, 10 seconds rest, 20 seconds push-ups, and 10 seconds rest. You should do those 4 rounds. That's it. I was done in a total time of 8 minutes by the time and when I got to school my heart was still pumping pretty hard.

    A healthy body is needed for studying and working, and efficiency (效率) is the key to building a great body in the least amount (数量) of time possible and you can't get more efficient than a 4-minute workout.

Gift Guide

    Chocolates

    The weather outside may be frightful but the smiles and smells inside are abundant! For all those special people on our Christmas girl list, send the sweat treats to help spread the joyous holiday cheer. What is the perfect gift for any occasion? Chocolate, chocolate, and more chocolate!

    La Place Collection

    Location: Suite 3, 41 Xinyuanjie, near Beijing Chateau

    Tel: 010-64668090

    Comptoirs de France Bakery

    Location: Rm 102, 1/F, Building 15, China Central Place, 89 Jianguolu.

    Tel: 010-65305480

    Awfully Chocolate

    Location: 108, Building 2, Beijing Wanda Plaza, 87 Jianguolu.

    Tel: 010-58205826

    Recipe books

    A recipe book from a different culture provides a chance to change up a Christmas dinner. Think about sitting down to a table of Mexican wedding cookies, Norwegian lefse, Chilean salmon, cream cheese lart and Chinese dishes. If you can't find the right one in time, search online, print the page and bind them into a book yourself. Nothing says, "I really care!" more than making an effort.

    Wine

    Get to the nearest Carrefour, and seize a bottle of good wine from among the 600 choices available there from Italy, Spain, the United States, Argentina, Chile, Australia, New Zealand, South Africa and Switzerland. 150-3, 000 yuan a bottle.

    Location: Wine section on 2/F, Carrefour Shuangjing Branch, 31 Guangqu Lu, Chaoyang District.

    Opening hours: 9 a. m.- 10p. m.

    Tel: 010-51909508/09

    Pearls

    The top level of Hongqiao Market has strand upon strand of pearls in every shape and color imaginable. Pearls never go out of style and make for a good gift for women with classic tastes.

    Hongqiao Market

    Location: Tian Tan East Road, east of the Temple of Heaven

    Opening hours: 8: 30 a. m.-9 p. m., open daily

    Tel: 010-67133354

Activities Information

The Mile High Country Q & Brew

Mile High Station | 6:00-10:00 pm.

Hosted by Tennyson Center for Children, this country music experience will bring Coloradans together to help kids and families have a better life. Enjoy a show by rising country music star Adam Doleac paired with BBQ, drinks and more.

Information and tickets at qandbrew22.givesmart.com.

Monarch Ball Colorado 2022

ISTBANK Center | 6:00-10:00 p.m.

Join us at Butterfly Garden's yearly party supporting invertebrate (无脊椎动物) protection. Take a magical walk through our Monarch Menagerie full of live monarch butterflies and enjoy a seated dinner, live music, and dancing!

Information and tickets at MonarchBallColorado.org.

Blue Hope Party Colorado

The Seawell Ballroom at the DCPA | 5:30 p.m.

Screen, Care, and Cure (治疗) are the three basics guiding the Colorectal Cancer Alliance's work and are important to ending colorectal cancer (结直肠癌) in our lifetime. Join the Alliance at the Denver Bash and enjoy dinner, music and exciting games.

Information and tickets at ccalliance.org.

Boulderthon

Boulder, CO | Various start times

Run the Signature Boulder Marathon! Epic (宏大的) finish and After-Party Downtown. Named one of the best new marathons in Colorado. Experience the only course to enjoy wonderful views of the foothills and the first-ever finish line on the Peal Street Mall. Now in 2022: 5k, 10k, and Kids Run! Information and tickets at boulderthon.org.