Tech Hammer

Ning Wei soon discovered that when people are busy, curiosity is really dispensable.

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

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 he has money, Ning Wei chose a customized version of the Xeon platform deep learning workstation. The total cost was 359 W, which was one-third of the price of his apartment.

It comes standard with four Xeon 7th generation CPUs, 72 cores, 144 threads, and 32 memory card slots. Ningwei directly installed 1TB of memory, which takes up half of it. If it feels not enough in the future, it can be upgraded to 2TB, five For the professional graphics card interface, Ning Wei chose four professional graphics cards and a GPU supercomputing card; the hard drive is 2TB, SSD and 28TB STAT parallel storage.

It is equipped with a tower chassis, a 1700W power supply, two 10 Gigabit Ethernet cards, and a matching high-end coolant water cooling system.

In addition, a tower-type USP power supply is also given, which can stabilize the voltage during normal times and allow the computer to run at full power during a power outage and provide stable power supply for about 6 hours.

Seriously rich and willful.

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

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

After all, it is for March to settle down. He who has no money is too lazy to think about it so much. It is like an old father who is willing to selflessly dedicate everything to the well-behaved girl raised in his boudoir without asking for anything in return. He just wants to give him the best things in the world. Her detachment.

The only thing that made Ning Wei feel depressed was that after placing the order, the merchant called him and told him enthusiastically, "Sir, it will take a month to get this set of workstations together, but don't panic, we will." We provide you with VIP-level services, not only free on-site installation and debugging, but also free on-site maintenance if there is any problem within three years..."

Sure enough, it would be more troublesome to find a home for March than to find a home for him.

Of course it is not difficult to finalize these things online.

What really makes him feel stressed is officially starting to study his latest topic - mathematical research to support the current stage of big data analysis and mining.

If you think about how difficult it is to point out a way from scratch to the current big data analysis and mining, I spend most of my time thinking about where to start building this mathematical theory.

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

This was already very mentally taxing, but what Ning Wei didn’t expect was that the humble room he and Senior Brother Lu shared was 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 Manchus and Han people have not been invited to the banquet, but they come to Ning Wei to discuss topics most frequently.

"Junior brother, you are here. What a coincidence. Senior brother has found a particularly interesting question to discuss with you today. You must be very interested. It is about non-zero structural constants of generalized flag manifolds! Come on, let's take a look at this example……"

"No, Senior Brother Zhou, you said last time that you wanted to treat Senior Brother Lu and me to a Manchu-Han banquet..."

"We mathematicians don't care about these details. How can the attraction of the Man-Han Banquet be as attractive as solving problems? Dear junior brother, let's take a look at this interesting problem first. Once the interesting problem is solved, the boring Man-Han Banquet will naturally come."

"No, Senior Brother Zhou, I happen to be hungry. It's not easy to concentrate when you're hungry."

"That's it, eh... What a coincidence, I happened to have a piece of chocolate with me. It's from Dove. It's a brand-name product. Come on, little brother, you eat first, and I'll complete the problem."

Ning Wei: "..."

After being forced to swallow a piece of chocolate, I spent half an hour discussing this issue with Senior Brother Zhou. Senior Brother patted his butt with satisfaction and left. When he left, he left a message: "Little Junior Brother, next time I will bring you Dove." White chocolate is not only smoother, but also tastes better!”

Watching Senior Brother Zhou leave, Ning Wei looked at Lu Dongyi who was calm as usual, working hard with a pen and paper, and said, "Senior Brother, should we lock the door in the future?"

"Oh, lock it. But you have also seen Senior Brother Zhou's physique. For him, the lock is just a matter of two bumps. And it doesn't cost much to replace the door. Senior Brother Zhou can afford it." Lu Dongyi said flatly. He said calmly.

"Should I go?! Is there any justice left in our dignified School of Mathematics at Yanbei University?!" Ning Wei was shocked by Lu Dongyi's words and asked indignantly.

I remember when I was at Jiangnan University, let alone my senior fellow students, even if the professors asked him to discuss issues, most of them would just sit back and wait politely. How come everyone here took the initiative?

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

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

"So here you will find that there will be endless classes, endless meetings, endless lectures, and endless issues to discuss!"

Are all mathematicians crazy?

After hearing this judgment, Ning Wei didn't know whether Senior Brother Lu had removed himself, but Ning Wei had removed himself. At the same time, he also had some enlightenment and asked: "So what Senior Brother Lu means is, if you want to shock Do they have to be crazier than them?"

"No, what I mean is that we should discuss a problem about the nonlinear minimal evolution mechanism that I am studying..."

Ning Wei: "Hey, speaking of this, brother, why don't we first study a problem that just occurred to me. The most important problem faced by big data now is that the demand for the number domain 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 area?"

"For example, we first define a fuzzy number field N, which is characterized by N=R*I={(R, I)}, where each member is expressed as being in [-∞, +∞]

A variable of and an associated membership degree in (0, 1]. After defining the number field of this two-dimensional structure, we then assume that the supernumber H is the latest and most general extension of N..."

Lu Dongyi: "..."

…

After that day, Ning Wei learned a trick, hey, it was just hurting each other, who is afraid of whom?

So whenever Senior Brother Zhou or other Senior Brothers came over, Ning Wei would not give them any time to ask questions. He would always pick up a piece of manuscript paper from the table, then look at the other person with surprise and say: "Oh, Senior Brother Zhou, I’ve been waiting for you to come, please help me look at this problem quickly. This is an interesting problem that I encountered when I was about to apply for a top-notch youth research project pre-study.”

"You see, first we use a series of fuzzy data as the basic object of computer brain cognition and reasoning, and then use mathematics to express the relationship between data, information, knowledge and intelligence in this hierarchical structure as a four-tuple From bottom to top, it is divided into data (D), information (M), knowledge (K) and intelligence (I), and then assume object (O), data (D), quantity (Q), information (M), semantics (S) ), concept (C) and behavior (B), from which we can get a structural formula... Do you understand?"

After Senior Brother Zhou was completely attracted, he asked questions that he had not thought through.

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

"Hey, Senior Brother Lu, please lock the door for me. Let me tell you, no one is allowed to leave today unless the two senior brothers help me discuss this issue! Let's stop eating! It's really solved. Next time I’ll treat you to a Manchu-Han banquet this time! You can order whatever you want!”

Zhou Yanping: "..."

…

Just like that, a week passed in a blink of an eye.

Ning Wei has also completely adapted to life in the Peking University School of Science and Technology, which is simple and fulfilling, simple but interesting.

Studying his own propositions and competing with fellow seniors in a battle of wits and courage, he 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 he has questions, he can also communicate directly via video. Yes, in one week, Ning Wei has been led astray by his senior brothers, and he has almost forgotten what "interfering" means and what "being polite" means.

There is also a point where Ningwei has been led astray.

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

For example, on the third day after that night, Ning Wei dragged Lu Dongyi to listen. On the fifth day, Lu Dongyi dragged Ning Wei to listen. On the sixth day, the two looked at each other and ran away together. Went to listen.

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

In fact, there is nothing wrong with this habit, and it cannot be considered a waste of time. After all, sitting for long periods of time is not a healthy lifestyle. After using the brain for a day, they walked out of the yard together to the lawn for fifteen minutes, and then did a free mental SPA. When the lights were turned off in the classroom, the two of them took a fifteen-minute walk back, which not only exercised the body, but also allowed the brain to get some rest. Get enough rest.

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

"Senior brother, have you ever thought about one thing? We are used to coming here to listen to this person playing the piano. If one day this person leaves the school and never comes again, what will we do?" Ning Wei asked.

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

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

"It seems that you really have a get-rich-quick mentality now." Lu Dongyi sighed.

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

"I want to open a ranch just to drink milk. Isn't this a typical get-rich-quick mindset?"

"Can this be the same? Forget it, let's not talk about it. Anyway, I have to see who that person is today. Senior Brother Lu, just tell me whether you are worthy of cooperating with me."

"Um……"

Lu Dongyi thought for a moment, and then said, "It's okay if you want me to cooperate, but I have issues to discuss with you next week, so don't use your stuff to deal with 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.

"Okay, how do you want me to cooperate with you?"

"Wait like this, you see, after the lights in the classroom are turned off, the time it takes to lock the door and walk downstairs is enough for us to walk to the road over there. Then we calculate the time and pretend to be passing by and bump into him. If it's a man, Let’s just go up and chat. If it’s a woman, just pretend to ask for directions…”

"Wait, you want me to find someone at Yanbei University to ask for directions?" 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 seemed that it was indeed inappropriate...

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

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

Ning Wei thought about every detail of his acquaintance with Lu Dongyi, then looked at his serious senior brother, then sighed and said: "Forget it, I'll go..."

…

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 road facing the exit door on the second floor.

The two mathematical geniuses grasped the time very steadily. When they turned around and walked back, about thirty meters away from the second floor, a figure appeared at the door of the second floor, then turned around, closed the door, and locked it. Door.

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

"Um?"

I recommend "I Can Incarnate All Things" by a good friend. Friends who are not good at reading can take a look.