The second vertical racing competition in Xihu District of Hangzhou started.

Recently, the second vertical racing competition in Xihu District of Hangzhou started in EAC Europe and America Center. The theme of this competition is "Dedicated to the Asian Games", which aims to enrich the amateur cultural and sports life of building workers in Xihu District, show the healthy style of residents in Xihu District, and welcome the arrival of the Hangzhou Asian Games.

Vertical racing takes the stairs of high-rise buildings as the runway, which is a new urban fitness sport. The race runs from the starting point on the first floor to the end point on the top floor of the building, and an effective timing technology system is adopted. In the competition, participants can not only experience the pleasure of climbing mountains, but also reduce the influence of the weather.

It is understood that about 100 people participated in this competition, and the players on the scene were divided into groups of men and women, and finally the third runner-up was decided. Wang Yong, a contestant, said: "Vertical racing is a very interesting sport, which not only tests your physical fitness, but also requires good coordination and psychological quality." "I experienced the fun of competition and realized that I still have a lot to improve in training and preparation." Contestant Zhang Jianhua said. (Yang Ling/graphic)

Infrastructure for training AI to solve common problems

In order to train artificial intelligence models that can solve common problems, infrastructure is needed to provide support. These infrastructures are usually composed of hardware, software and tools to improve the efficiency and accuracy of model training. This article will introduce the infrastructure for training AI to solve common problems.

I. Hardware infrastructure

When training artificial intelligence models, it is usually necessary to use high-performance computing hardware to provide support. The following are several common hardware infrastructures:

  1. CPU: The central processing unit (CPU) is a general-purpose computing hardware, which can be used to run various types of software, including artificial intelligence models. Although the performance of CPU is relatively low, it is still useful in training small models or debugging.

  2. GPU: A graphics processor is a special computing hardware, which is usually used to process images and videos. Because of its highly parallel structure, GPU can provide higher computing performance than CPU when training artificial intelligence models, so it is widely used.

  3. TPU: Tensor processor is a kind of hardware specially used for artificial intelligence computing, developed by Google. The performance of TPU is higher than that of GPU, and it is suitable for large-scale artificial intelligence model training and reasoning.

Second, the software infrastructure

In addition to hardware infrastructure, some software tools are needed to support the training of artificial intelligence model. The following are some common software infrastructures:

  1. Operating system: Artificial intelligence models usually need to run on an operating system, such as Linux, Windows or macOS.

  2. Development environment: Development environment usually includes programming language, editor and integrated development environment (IDE) for writing and testing artificial intelligence models. Common development environments include Python, TensorFlow, PyTorch and Jupyter Notebook.

  3. Frames and libraries: Frames and libraries provide some common artificial intelligence model algorithms and data processing tools, making model development and training more convenient. Common frameworks and libraries include TensorFlow, PyTorch, Keras and Scikit-Learn.

Third, the tool infrastructure

In addition to the hardware and software infrastructure, some tools are needed to support the training of artificial intelligence models. The following are several common tool infrastructures:

Dataset tool: Dataset tool is used to process and prepare training datasets, such as data cleaning, preprocessing, format conversion, etc. Common data set tools include Pandas, NumPy and SciPy.

2 Visualization tools: Visualization tools are used to visualize the training process and results to help users better understand the performance and behavior of the model. Common visualization tools include Matplotlib, Seaborn and Plotly.

Automatic parameter tuning tool: The automatic parameter tuning tool is used to optimize the parameters of the model to improve the performance and accuracy of the model. Common automatic parameter tuning tools include Optuna, Hyperopt and GridSearchCV.

In short, training artificial intelligence models to solve common problems requires the use of a variety of infrastructures, including hardware, software and tools. These infrastructures are designed to improve the efficiency and accuracy of model training, so that the model can better solve various practical problems. In practical application, users need to choose the appropriate infrastructure according to specific requirements and data characteristics, and design and implement it accordingly.

I started as James, who played as a center: I was almost eliminated by Chelsea Youth Academy that year.

Chelsea defender Reese James said in an interview that he was almost eliminated by Chelsea youth training in the past and revealed that he started as a striker.

James said: "I signed for Chelsea when I was about eight or nine years old. I stood out among my peers. We have Du Qiong Sterling, martel Croasdale, Ryan Brewster, Jamie Cumming, Mark Gay and Connor Gallagher, and several of us have succeeded."

"All of us dream of playing for Chelsea, but when we were growing up, people knew it was difficult to get into the first team because not many people could do it in recent years. We knew what we wanted, but it was difficult to achieve at that time. "

"But when Lampard was the head coach, he really helped the youth training and the first team to cooperate better. Even now that he has left, the youth training and the first team still maintain his legacy, as evidenced by the addition of some young players last season. They got the opportunity and completed their first show, which is both recognition for the players and affirmation for the staff. "

"When I was growing up, I was a striker. I admired Drogba and I always admired him. I just want to score goals and celebrate like him. I stopped playing as a striker at the age of eleven or twelve and started to develop in the midfield. I stayed there for three or four years, and then I found myself suitable to play as a right-back at the age of fifteen. I hated this position at first. Until one day, I suddenly felt adapted to this position and began to really enjoy it, about seventeen years old. But it really takes me a long time to get used to this position. When I don’t want to play this position, this position often makes me feel depressed.

"But right-back is the position where I play the most now, and it is also my favorite position. I have hardly played in other positions. I have been there since I joined Chelsea, but when I was fifteen or sixteen, I was almost eliminated. I am probably one of the worst players in that age group, and they are not sure how I will develop. When they offered me a new contract, they took great risks. I must try my best to prove that I can play football and achieve my goals. "