Xueba's life simulator

Chapter 99 News
Although it is summer vacation, there are not many people in the library, but there are still some people. After all, there are some people who apply to stay in school for various reasons.

Some people apply to stay in school for the postgraduate entrance examination; some people do hard experiments in the laboratory; some want to stay in Jinling for part-time jobs. .

The seat Zhou Ming sat in was still the old seat he used to sit in. When he turned on the computer and pressed the power button, while waiting for the computer to start up, he habitually turned his head and looked at the seat beside him. That was the place Shen Qingqiu sat in before. , but that seat is empty today.

Zhou Ming, who was alone in the library without Shen Qingqiu, was a little uncomfortable for a while, but now he seemed to be used to her being around.

"Alas!" Zhou Ming sighed, not knowing why.

But after the computer was turned on, Zhou Ming skillfully opened the software that he used to write mathematics papers before.

This time, Zhou Ming took some time to enter the state of ecstasy he had entered before.

The last time Zhou Ming entered that state of ecstasy when he was writing a thesis, he forgot to eat all day long. After Shen Qingqiu found out, his heart ached so much that he hurriedly dragged him to buy some food.

Sharp phase transition for the random-cluster and Potts models via decision trees.
Zhou Ming's first paper is a mathematics paper. This is the title of the paper. Because he is still preparing to submit it to the "Mathematical Yearbook", Zhou Ming just writes it in English as before.

The title of the paper, translated into Chinese, is [Providing clear phase transitions for random clustering and Potts models through decision trees].

"Abstract"

“We prove an inequality on decision trees on monotonic measures which generalizes the OSSS inequality on product spaces. As an application……”

As with the previous papers, Ming Zhou started writing the abstract after writing the title.

As you can tell from the title, this paper involves four key points, namely decision trees, random clustering, Potts model and phase transition.

Decision tree is a decision analysis method that uses probability analysis to intuitively use probability analysis to calculate the probability that the expected value of the net present value is greater than or equal to zero, evaluate project risks, and judge its feasibility by forming a decision tree based on the known probability of occurrence of various situations. A graphical method of .

Because this decision-making branch is drawn in a graph that resembles the branches of a tree, it is called a decision tree.It is a predictive model in machine learning, which represents a mapping relationship between object attributes and object values.

Decision trees are a method of machine learning, which is now a well-known fact.

However, the Potts model and the Random Cluster model are completely different from their phase transitions, which are completely different from the decision tree.

In 1895, French physicist Pierre Curie discovered that if a piece of iron is exposed to a magnetic field, and the strength of the magnetic field is increased from zero to maximum, and then the magnetic field is removed, the piece of iron will Retain some magnetism.

However, when the temperature exceeds a critical value, the iron block will lose its magnetism.

This critical value is called the Curie point.

The change in the properties of the magnet caused by the temperature of the iron block changing from one side of the Curie point to the other is called a phase transition.

Later, in 1925, German scientists proposed a model that successfully explained the phase transition of iron, and in 1952, Australian mathematicians proposed the Potts model, which is applicable to a single particle with more possibilities The study of states of matter.

The Random Cluster model was proposed later in order to make it easier to study the Potts model and unify it with several other statistical mechanics models.

People today would not have thought that when quantum technology becomes more mature in the next few decades, in the new computing system composed of quantum computers and quantum algorithms, the Potts model and the Random Cluster model that originally belonged to statistical mechanics will be used in the new computing system. The field of computing shines.

The paper written by Zhou Ming this time mainly proves the inequality on the single-dispatch quantity decision tree, which generalizes the OSSS inequality on the product space.

As an application, Ming Zhou used this inequality to prove many new results on the lattice spin model and its stochastic cluster representation.

Although this paper does not have much effect on the research of quantum technology, it can also speed up the research on the Potts model and the Random Cluster model for several years, and contribute to the new computing system composed of quantum computers and quantum algorithms in the future.

In fact, it's not that Zhou Ming doesn't want to promote quantum technology, it's mainly because he really has limited knowledge about it.

Regarding quantum technology, in front of the real masters in this area, Zhou Ming can even be said to be ignorant.

After all, Zhou Ming didn't study physics at all, so it's normal not to know about it. Even the biology, artificial intelligence, and mathematics that he's involved in now, he still doesn't know it well, so how can he be distracted from studying and researching? Other aspects of knowledge?
Zhou Ming still understands the truth that you can't chew too much.

If he really wants to get involved in other aspects of knowledge, then Zhou Ming will definitely delve into it to the end.

And this kind of situation will only happen when Zhou Ming's research field is developing too fast and has been shackled by other fields. Only when other fields develop this shackle can it be broken. Zhou Ming will start to study other fields. Knowledge.

When Zhou Ming was in the state of writing a thesis, everything around him had nothing to do with him. In order to prevent himself from forgetting to eat all day like the first time, Zhou Ming specially set a vibrating alarm clock on his phone.

When it's time to eat, the phone will vibrate to remind Zhou Ming that it's time to eat. Otherwise, Zhou Ming is really afraid that when he comes out of that state of ecstasy, the library will already be closed, and he will have to be hungry for another day.

In this way, Zhou Ming stayed in the library almost all day except for eating, exercising and sleeping.

On the first night, Zhou Ming carried his laptop back to the dormitory where he was alone with a sense of fulfillment.

After returning to the dormitory and taking a shower, Zhou Ming looked at his phone and found that no one had sent a message, so he put down his phone and went to sleep.

Throughout the whole day on the 12th, Zhou Ming's life trajectory was no different from the previous day. Except that the content of the paper he wrote and the food in the cafeteria were different from the first day, everything else seemed to be a replica of yesterday's life.

However, Zhou Ming was not tired of this kind of life, on the contrary he rather liked this kind of peaceful and fulfilling life, the only regret was that Shen Qingqiu was not by his side.

After the library closed in the evening, Zhou Ming returned to the dormitory and took a shower.

Zhou Ming happened to wash his clothes while he was taking a shower. After he finished his shower and washed his clothes, he hung them outside to dry before returning to his bed. He was going to turn on his phone to see if there was any news like yesterday. He falls asleep when no one is looking for him.

Zhou Ming, who thought that today would be the same as yesterday, and no one was looking for him, unlocked the screen of his phone and clicked on WeChat, but found that there were news in the family group called "Hemei Family", and there were a lot of news.

It is true that no one was looking for Zhou Ming, but when Zhou Ming saw this situation in the family group, he was more surprised and curious than seeing someone send him a message.

This "Harmony Family" WeChat group was established by Zhou Ming after he graduated from high school and bought a mobile phone for his family. The members in it are his uncle, several aunts, their wives, husbands, and their children.

The reason why Zhou Ming felt strange was that when he came out of the library, there was not so much news in this group. How could there be so much news just by taking a shower?

And you must know that in a family group like this, the elders usually send messages in it, while the juniors are the lurkers.

Usually when elders send messages, except during the Chinese New Year, they also forward some rural videos that middle-aged and elderly people watch and articles that shock the body and do not repost the human body of China.

Today is not a special day. Why are there so many messages in this group suddenly?

It is impossible for someone to repost dozens or hundreds of videos and articles!
Another point is that the elders usually go to bed earlier. It stands to reason that it is past eleven o'clock at this time. They usually go to bed at this time. Why are they suddenly interested today?

Zhou Ming is curious, the news in the group is still increasing.

When Zhou Ming clicked on the family group, he quickly scrolled up their chat records. It turned out that the chat started with a video forwarded by an elder. Similar videos, and then discussed.

Zhou Ming clicked on the first video, which seemed to be shot with a mobile phone, and the person who took the video must have lived on a high floor.

Although it is night in the video, there is a large fire in the distance. You can tell what is burning by seeing the fire.

In addition, it can also be seen from the surrounding environment that the burning place is in a bustling city.

After watching the first video, Zhou Ming began to scroll down. If there was a text message, he would read the text message. If there was a voice message, he would click on the voice message to listen to the voice message. If there was a video message, he would click on the video.

Although the angles and addresses of the videos posted by the other people are different, the location of the fire is the same.

When Zhou Ming scrolled down the chat history slowly, he unknowingly reached the bottom. Just as Zhou Ming was about to exit the chat interface, someone sent a new video, which seemed to be shot by a mobile phone.

Zhou Ming clicked on this video, and the content of the video was the same as the previous video at first.

Just when Zhou Ming was shocked by the explosion in this video, there was another video below, and Zhou Ming quickly clicked on it.

It's the same location in this video.

By this time, Zhou Ming probably knew what was going on, but since this incident happened less than an hour ago, we can only wait for the official report on how it happened.

Zhou Ming, who had studied for a day and was satisfied with his abundant day, felt very depressed at this moment.

Even if you have a life simulator, it is impossible to know everything that will happen in the future, and the life simulator is not a panacea.

If he and Shen Qingqiu were still there, and happened to be around there,

Thinking of this, Zhou Ming began to feel a little irritable. He quit the WeChat group, quit WeChat, and turned off his phone. He wanted to sleep.

Lying on the bed, Zhou Ming tossed and turned, unable to sleep from left to right. Tonight he suffered from insomnia.

Anyway, Zhou Ming couldn't sleep, so Zhou Ming simply got up and got off the bed. He picked up a chair, opened the door of the dormitory leading to the balcony, sat on the balcony of the dormitory, felt the cool night wind blowing over his body, and felt the warmth of the night. The silence, but luckily no mosquitoes bothered him.

……

Waking up on the morning of the 13th, while eating breakfast in the cafeteria, Zhou Ming, who had calmed down, routinely watched the news. Sure enough, it was on the trending list, and this matter was discussed everywhere.

On the Internet, people are making various speculations about the cause of this incident.

After breakfast, Zhou Ming continued to the library to write his unfinished paper.

In fact, the number of words in this mathematics paper is not more than that of Zhou Ming's previous papers. If we only look at the number of pages, the number of pages he wants to write is likely to be less than the previous papers.

But this paper needs other software assistance, and there are so many references, it is naturally more troublesome to write than the previous papers.

It wasn't until the afternoon of the 15th that Zhou Ming's mathematics paper was finished, and he submitted it to the "Mathematics Yearbook" with ease.

After submitting this mathematics paper to the "Mathematics Yearbook", Zhou Ming didn't care about it, but he didn't start writing the second paper immediately, but called Yi Huaqing.

At the beginning of the month, Yi Huaqing called Zhou Ming and said that the company's second project, "Research on the Synthetic Microorganisms of Water Bloom Cyanobacteria", had already produced results. At that time, Zhou Ming asked them to rest for two weeks, and they would be ready in two weeks. There is more than one new project.

It has been two weeks since Yi Huaqing called Zhou Ming, and it was time for Zhou Ming to ask the company to start a new project.

"Hello." Yi Huaqing had already answered the phone, his voice sounded a little excited, because he knew why Zhou Ming called him today, and he had been waiting for Zhou Ming's call these two days.

　19 words of two-in-one chapters, the latter is gone, no need to wait.Tomorrow...it should be called today (the [-]th), and a new chapter should be added when I come back from get off work today.

　　
　
(End of this chapter)