Hammer of Technology

Finally, the end of one song, and then the next one.

They are all popular songs with simple melodies, and there is no element of showmanship, but this happens to be in line with Ning Wei's aesthetics, and it does sound very comfortable.

After about four or ten minutes like this, the lights in the classroom went out.

Brother Lu just stood up, patted his buttocks and said, "Let's go."

……

On the way back, Ning Wei couldn't help asking: "Brother Lu, do you often come here to listen to people playing the piano?"

"Well, it was more than a year ago. At that time, the project I was doing was troubled by the small spacing problem of the classical Gaussian orthogonal ensemble in random matrices. The radio happened to be broken that day, so I just wandered around the campus. On the road we entered outside the lawn just now, we heard the sound of the piano inside."

"It's also quite a coincidence. I suddenly felt a little tired, so I simply went to the lawn to listen to the piano. In fact, the people who played the piano at that time should have just been exposed to the piano for a short time. In fact, they played far less well than now, and the rhythm in many places was different. It’s wrong. But I don’t know why, but I thought it sounded good to my ears, so I went to the lawn just now, listening to the sound of the piano, and thinking about my own problems.”

"Guess what, that night, I got inspiration from the sound of the piano, and I solved that problem that night. Later, when I encountered a problem that I couldn't understand, I would often come over and sit on the lawn for a while. Yes. Listen to the piano when someone is playing, and listen to the radio when no one is playing."

"Later, I gradually discovered the pattern. Except for the winter vacation, the people who play the piano will come here at around ten o'clock in the evening almost every day, and then leave after practicing for about half an hour to four or 10 minutes."

"In the beginning, I practiced the same one or two songs every day, and then I learned to play more and more songs. Let's put it this way, I listened to this person's piano skills from the beginning to the present. of."

After hearing this, Ning Wei felt a little puzzled, and asked, "No, Senior Brother Lu, I heard that people who practice piano seriously should practice basic skills first, and then slowly challenge those difficult piano pieces." ? This person plays these popular songs every day, how can he improve?"

"Yes! But I think it's pretty good. After all, if I really want to play those piano pieces that can't be named, I can't appreciate them."

Ning Wei nodded, thinking that what the senior brother said made sense, because he couldn't appreciate it either.

Afterwards, Ning Wei thought of a possibility and continued to ask, "Huh? Brother, don't you like the girl who plays the piano in the classroom?"

Lu Dongyi looked at Ning Wei strangely, and said, "How do you know that the one playing the piano is a girl?"

Ning Wei thought for a while and said, "Could it be that the one who played the piano just now was a man? They all chose very soft songs, and female singers sang more, so girls probably like to play it more?"

"No, I don't know the gender of the person playing the piano at all! How do you like it? I haven't seen it before." Lu Dongyi replied.

Ning Wei was stunned...

Brother, this is not playing cards according to common sense!

Who isn't curious these days?

Listening to someone playing the piano for more than a year, Senior Brother Lu doesn't even know what the person playing the piano looks like. It takes a lot of patience to resist the urge to explore the truth!

"Why? Didn't you think of waiting a little longer to go to the front of that building to see who is coming out in the middle of the night?" Ning Wei asked in surprise.

"Why do you want to watch it? I just came to listen to this person play the piano. As for whether this person is male or female, old or young, or what he looks like, it doesn't seem to have anything to do with me?" Lu Dongyi shook his head, He was also puzzled by Ning Wei's fuss.

Well, after hearing this answer, Ning Wei is sure that one of him and Senior Brother Lu in front of him must be abnormal.

"Brother, are you a person without the slightest curiosity? Although these things have nothing to do with you, people will naturally feel curious! When you listen to someone playing the piano, don't you think about this person's height? "

Lu Dongyi thought for a while and replied: "I really haven't thought about it. When I come to listen to and play the piano, I always encounter problems. There are not enough cells in my mind to think about math problems. How can I have time to wonder about other things?" ?”

Ning Wei once again had an epiphany...

"Brother, do you mean that only the top geniuses are qualified to be curious when thinking about math problems?"

Lu Dongyi suddenly didn't want to speak, and gave Ning Wei a supercilious look.

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144 Oh, it's crazy, who is afraid of whom? (Add more monthly tickets!)

Ning Wei soon discovered that when people are busy, such things as curiosity are really dispensable.

Although that night he thought about what kind of pianist this pianist could inspire Brother Lu through the piano, but the next day he put this question behind him.

No way, there are too many things.

First, I ordered a workstation for March online.

Based on the mentality that the hardware performance must be improved when the money is rich, Ning Wei chose the customized version of the Xeon platform deep learning workstation, which cost a total of 359 W, which is one-third of his suite plus.

It comes standard with four Xeon 7th-generation CPUs, 72 cores, 144 threads, and 32 memory card slots. Ning Wei directly installed 1TB of memory, which takes up half of it. If you feel that it is not enough in the future, you can upgrade to 2TB. Five professional graphics As for the card interface, Ningwei chose four professional graphics cards and one GPU supercomputing card; the hard disk is 2TB, SSD and 28TB STAT are stored in parallel.

It is equipped with a tower chassis, a 1700W power supply, two [-] Gigabit Ethernet cards, and a supporting high-end coolant water cooling system.

In addition, a tower-type USP power supply is also given as a gift, which can stabilize the voltage at ordinary times. When the computer is running at full power during a power outage, it can provide stable power supply for about 6 hours.

Seriously rich and self-willed.

In order to provide a more perfect working environment for the workstation, Ning Wei also replaced the air conditioner in the study with a brand new one, upgrading from the previous 1 horsepower to 2 horsepower, which has a stronger cooling effect.

Of course, online shopping did not take Ningwei too much time, and he directly discussed it with Yu Xingwei on WeChat, but because he was not short of money, Yu Xingwei gave some more reasonable and economical configurations. Just give up.

After all, it is a home for March, and those who don’t have money don’t bother to think so much. It’s like an old father who is willing to give everything selflessly to the well-behaved girl in his boudoir without asking for anything in return. He just wants to give the best things in the world to her. Her detachment.

The only thing that made Ning Wei quite depressed was that after the order was placed, the merchant called and told him enthusiastically, "Master, it will take a month to get this set of workstations together, but don't panic, we will Provide you with VIP-level service, not only free on-site installation and commissioning, but also free on-site maintenance if any problems occur within three years..."

Sure enough, setting up a home for March is more troublesome than setting up a home for himself.

Of course, there is no difficulty in finalizing these things online.

What really made him feel a lot of pressure was the official start of research on his latest project—mathematical research that supports the analysis and mining of big data at this stage.

From scratch to the current big data analysis and mining to point out a way, it is difficult to think about it, so Ningwei spends most of his time thinking about where to start to build this set of mathematical theories.

The form of expression is reading books, reading papers, scribbling on paper, and occasionally discussing with Lu Dongyi.

This is already a lot of brainpower, but what Ning Wei didn't expect was that the shabby room between him and Senior Brother Lu was still very popular in the yard. From time to time, people would rush in, say hello, and start asking questions and starting discussions Among them, Senior Brother Zhou is the representative. The Man-Han banquet has not yet been invited, but the frequency of coming to discuss topics with Ning Wei ranks first.

"Little brother, you are here, what a coincidence, brother today I found a particularly interesting question to discuss with you, you must be very interested, the non-zero structure constant question of generalized flag manifolds! Come on, let's take a look at this example……"

"No, Senior Brother Zhou, last time you said that you would invite Senior Brother Lu and I to a full banquet..."

"Let's mathematicians don't care about these details. How can the attraction of the Man-Han Banquet be more attractive than solving the problem? Good boy, let's take a look at this interesting problem first. After the interesting problem is solved, the boring Man-Han Banquet will naturally come."

"No, Senior Brother Zhou, I happen to be hungry, and it's not easy to concentrate when I'm hungry."

"Is that so, eh... Do you think it's a coincidence that I happened to have a piece of chocolate with me, Dove's, a brand-name product, come here, little brother, you eat first, and I will make up for the problem."

Ning Wei: "..."

After being forced to swallow a piece of chocolate, he spent half an hour discussing this issue with senior brother Zhou. The senior brother patted his buttocks in satisfaction and left, leaving a sentence: "Little brother, next time I will bring you Dove's." White chocolate is not only smoother, but also tastes better!"

Watching senior brother Zhou leave, Ning Wei looked at Lu Dongyi, who was calm and working hard with a pen and paper, and said, "Brother, should we lock the door from now on?"

"Oh, the lock. But you have seen Senior Brother Zhou's physique. To him, this lock is just a matter of knocking twice. And it doesn't cost much to change the door, Senior Brother Zhou can afford it." Lu Dongyi was flat. Said lightly.

"I'm going?! Is there any justice in our majestic Yanbei University Mathematics Research Institute?!" Ning Wei was shocked by Lu Dongyi's words, and asked outrageously.

I think when I was at Jiang University, let alone my seniors, even if the professors asked him to discuss issues, most of them would just sit back and wait politely. Why did the people here take the initiative to attack?

Lu Dongyi finally raised his head and glanced at Ning Wei, and still said unhurriedly: "Where are we going? The school hasn't started yet, and you will know when it starts. Don't think about how much the math guys can do. Be polite. Especially those guys who can still stay in the math class after the freshman year. After all, for the application layer, the axiomatic abstraction has no meaning for future work, but various axioms at the mathematical level The simplified abstraction is the private product of everyone's mathematical ideal!"

"You should understand this too. For a group of people who live on the abstract level of various mathematical axioms every day, if you talk to them about the principles of heaven, it is better to discuss some more in-depth issues with them, and don't be led by their noses. For example, the simplest model of the general structure and evolution mechanism of nonlinear problems. After all, the essence of pure mathematicians is a group of lunatics who do not use standard bases and must consider using other rotation bases to amplify the probability of error."

"So here you find that there will be endless lectures, endless meetings, endless lectures, and endless discussions!"

Are all mathematicians crazy?

After hearing this judgment, Ning Wei didn't know whether Brother Lu had removed himself, but Ning Wei did remove himself, and at the same time, he also seemed to understand, and asked: "So what Brother Lu means is, if you want to shock yourself? They, have to be crazier than them?"

"No, what I mean is why don't we discuss the problem of the nonlinear minimal evolution mechanism I'm studying..."

Ning Wei: "Hey, speaking of this, brother, why don't we first study a problem that I just thought of. The most important problem facing big data now is that the demand for number domains has far exceeded the pure numbers in the traditional R domain. So if we want to create a new mathematical theory for big data, can we start from this one?"

"For example, we first define a fuzzy number field N, whose characteristics are N=R*I={(R, I)}, where each member is represented as in [-∞, +∞]

A variable of and an associated degree of membership in (0, 1], after defining the number field of this two-dimensional structure, we set the supernumber H as the newest and most generalized extension of N..."

Lu Dongyi: "..."

……

After this day, Ning Wei learned a trick, heh, it's just hurting each other, who is afraid of whom?

So whenever senior brother Zhou or other senior brothers came, Ning Wei would not give them any time to ask questions, and would always pick up a piece of manuscript paper from the table, and then looked at the other party with surprise and said, "Oh, Senior Brother Zhou, I'm looking forward to you, hurry up, help me to look at this problem. This is the problem I will encounter in the pre-research of the top-notch youth research project, which is very interesting."

"Look, first we take a series of fuzzy data as the basic objects of cognition and reasoning of the computer brain, and then use mathematics to express the relationship between data, information, knowledge and intelligence in this hierarchical structure as a quadruple From bottom to top, it is divided into data (D), information (M), knowledge (K) and intelligence (I), and then set object (O), data (D), quantity (Q), information (M), semantics (S ), concept (C) and behavior (B), from which a structural formula can be obtained... get it?"

After Senior Brother Zhou was completely attracted, he asked questions that he hadn't figured out.

"Now you understand the default problem. Now suppose we define a data object O as a variable v with a specified class T, v∈V?PV?U, which is restricted by the type constraint μ(vT) so that this general class T cuts T through sub-domains, and transforms it into a specific type of problem: O? At this time, the problem comes, because there is no way to prove the existence of a general solution, so invalid data that may be generated during the entire construction process will be repeatedly screened, resulting in the entire data The structure has collapsed, where do you think we should start to solve this problem?"

"Hey, Brother Lu, lock the door for me. Let me tell you, if the two senior brothers don't discuss this issue for me today, no one is allowed to leave! Don't even eat any food! It's really solved, next time This time, I'll treat you to a full banquet! You can order whatever you want!"

Zhou Yanping: "..."

……

Just like that, a week passed in a flash.

Ning Wei has also fully adapted to the life in Peking University School of Mathematics, which is simple but fulfilling, simple but interesting.

Studying your own propositions and fighting wits with the seniors by the way, you can also be as happy as a god. Senior Brother Lu also introduced him to two professors from the Statistical Science Center of Yanbei University. When you have questions, you can also communicate directly via video. Yes, within a week, Ning Wei has been led astray by his seniors, and almost forgot what it means to "disturb" and what it means to be "polite".

Another point is that Ning Wei was also taken astray.

That is, from time to time, I also want to go to the lawn outside the second-floor building to listen to the concert played for two people.

For example, on the third day after that night, Ning Wei took Lu Dongyi to listen to it; on the fifth day, Lu Dongyi took Ning Wei to listen; on the sixth day, the two of them looked at each other and ran together went to listen.

Of the two days I didn't go, one day was because neither of them stayed in the office so late; the other day they were both immersed in their respective projects and completely forgot about it.

In fact, there is nothing wrong with this habit, and it is not a waste of time. After all, sitting for a long time is not a healthy way of life.After using the brain for a day, walk out of the yard together to the lawn for 15 minutes, and then do a free spiritual spa. After the lights are turned off in the classroom, the two of them take another 15 minutes to walk back, which not only exercises the body, but also fully stimulates the brain. rest.

But this evening, Ning Wei, who was sitting on the lawn, finally couldn't suppress his inflated curiosity.

"Brother, have you thought about one thing, we are used to listening to this person play the piano, if one day this person leaves school and never comes again, what should we do?" Ning Wei asked.

"Then come here and listen to the radio. Anyway, it won't disturb others here." Lu Dongyi said.

"Brother, can I ask you to be a normal person? Let's go and see who is playing the piano later, okay? Maybe we can get to know each other. When we become friends and want to listen, can't we let her play for you at any time?" Shall we listen?" Ning Wei complained.

"It seems that you are really in the mindset of getting rich right now." Lu Dongyi sighed.

Ning Wei looked at Lu Dongyi with question marks on his face.

"I thought of opening a ranch just to drink milk. Isn't this a typical way of thinking about getting rich?"

"Can this be the same? Forget it, let's not talk about it. Anyway, I must see who that person is today. Brother Lu, you can say whether you deserve to cooperate with me."

"Um……"

Lu Dongyi thought for a while, and then said, "It's okay to want me, but I have a problem to discuss with you next week, don't use your set of things to perfuse me."

"Deal!" Ning Wei said without hesitation.

It's not a big deal, compared to Senior Brother Zhou's arrogance, Senior Brother Lu can even be described as kind.

"All right, how do you want me to cooperate with you?"

"It will be like this, look, after the lights are turned off in the classroom, the time to lock the door and walk down the stairs is enough for us to reach the main road over there. Then we count the time and pretend to pass by just in time. If it is a man, Let's go up and chat directly, if it's a woman, you can pretend to ask for directions..."

"Wait, you asked me to ask someone for directions at Yanbei University?" Lu Dongyi interrupted Ning Wei.

"if not?"

"Do you think it's appropriate for me to ask?" Lu Dongyi asked seriously again.

Ning Wei thought about it, and it seems that it is really not suitable...

"But I really don't have much experience in dealing with the opposite sex..." Ning Wei was troubled.

"Then do you think I have any experience in this field?" Lu Dongyi continued to ask.

Ning Wei thought about the little things he had known with Lu Dongyi so far, then looked at the serious brother, and then sighed: "Forget it, let me go..."

"Huh? Haha, brother, don't worry about those details."

……

Soon, the music stopped, the lights in the classroom on the second floor were turned off, and the two of them walked around to the front of the building and walked on the main road facing the exit gate on the second floor.

The two math geniuses grasped the time very steadily. When the two turned their heads and walked back, about 30 meters away from the second floor, a figure appeared at the door of the second floor, then turned around, closed and locked the door .

Ning Wei took a deep breath, and said to Lu Dongyi who was beside him: "Senior brother, you are here, don't move around, it's just a matter of buying a few oranges!"

"Ok?"

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145 The Runaway Junior Brother