Chapter 91

After the dinner, Zhang Yuan anxiously returned to his room and opened his personal tablet computer. There is an idea left by my father - "a new community discovery algorithm".

The ideas left by dad are very innovative.

After half an hour's deliberation, Zhang Yuan was surprised to find that this community discovery algorithm can be very suitable for turbulence problems!

"Can it be used?"

A burning flame rises from the heart!

Community discovery is a very classic problem in graph theory, especially in complex networks, which is a major research focus in informatics.

The nodes in the network can be divided into groups. The connections among the nodes in the group are relatively dense. These dense node groups are called a community structure.

According to Zhang Yuan's intuitive idea, a turbulence can be regarded as a complete community structure.

It will be much less difficult to analyze a single community.

"However, after the analysis of a single community is clear, how can the data be combined?"

The value of the algorithm is not very great.

This problem is very confusing, and the difficulty of solving it is unknown.

Zhang Yuan's brow tightly wrinkled, for a while and a half, no good idea.

Now, two roads are in front of Zhang Yuan. According to his current understanding, it is no problem that this article is published in the top regional journals, and it is more than enough to be used as a graduation thesis.

Money?

Reputation?

He doesn't need that right now.

Zhang Yuan re opened his father's photo, the memory of the past, after the baptism of time, as if plated with a layer of golden light.

"Thank you, father," he said

……

Time is like running water, passing day and night.

With the increase of communication delay, communication with the earth is becoming more and more difficult, and the atmosphere inside the spacecraft is slowly becoming depressed. The number of people chatting on the roadside and exercising in the gym has also decreased significantly.

We work after dinner and go to bed after work. It seems that only when we are busy can we forget those troubles.

Like it or not, people have to adapt to the universe.

Zhang Yuan's hot spot has finally passed, and the Fowles fortune list has been changed to federal currency. Several new people came out of the list, but there was no big splash.

We are only interested in the first 100 million yuan, but not in the second and third.

Money on earth is not money that can be used on a spaceship. It's just a number. If you watch too much, you won't feel too much.

However, the competition in the academic list is very fierce, and the first place has changed several times in a row.

Truth in the universe, in this small society, began to become more eye-catching.

"Outside the nickname! Star University's ranking has officially entered the 500th place in the world

"Our deep space university has been killed. The 1000th place of all mankind can't get in! " Ye Kaifu, the news of PHS, met the first sentence is this.

He said with a sad face: "Mr. Zhang, as a graduate student of Shenkong University, you have to do something. My teacher urges me to send papers all day long. It's really annoying. "

Zhang Yuan was surprised. "It's not my fault that we can't go up in the ranking of SZU What about the professors? "

"The professors are busy debugging the spaceship. Where can they write their papers? Such a big ship

"Wait a minute, star university has good results? Can't they be so powerful after taking drugs? "

"I'll forward it to you."

A guy named Zhang Yingbo wrote an innovative paper on "light stagnation technology", which caused a little sensation.

The principle of light stagnation is to interweave the light waves and make them stop in the natural orbit. This technique relies on adjusting the light waves so that they meet at so-called "outliers.".

With this principle, people can use laser to send and store information.

Zhang Yuan read it with relish for a long time and marveled at the innovation of this paper. He didn't understand how Zhang Yingbo wrote such a paper under such poor experimental conditions.

A few days ago, a boy named Xiao Weixing wrote a paper on "Photocatalyst". Because there are too many professional terms involved, Zhang Yuan can't understand it, so he can't evaluate it.

Anyway, the response from the industry is good.

By the way, this guy is also from star University.

There is also a paper on "gene matching" written by a female student named Gina, which mines the mutual selection between genes from the perspective of big data, and the mathematical model is quite good.

This guy is from star University!

In his twenties, Zhang Yuan was the most imaginative. Fierce competition also led to the gradual decline of Zhang Yuan's ranking to more than 100."Zhang Xueba, aren't you doing turbulence? One turbulence can kill them all! " Ye Kaifu said unkindly.

Zhang Yuan said bitterly, "go, do you think this problem is easy to do?"

"Aren't you number one in your major? I'm just a weak chicken. In the past eight months, I have only one paper 233. "

Zhang Yuan suddenly, this ye Kaifu is to pull hatred. He didn't publish his paper for such a long time, and he was almost caught up by Ye Kaifu.

Zhang Yuan couldn't help feeling a little annoyed, but he had to stick to the topic he chose no matter what, "are you so sure I can't do it? I'll tell you, you stay close to me... "

"I have grasped the real essence of turbulence problem and created an equation, which is called leaf equation. Specifically, its vector form is = - Ñ P + ρ F + μ Δ v..."

"What?! Is it true or not? "

After swallowing, ye Kaifu felt his heart stop beating. Although he didn't quite understand, he was deeply aware of the importance of turbulence. Moreover, as long as you don't understand, even if the other party talks nonsense, there's no way!

"Wait a minute, why is it called the leaf equation?"

"Ye Kaifu equation, because your spur just now gives me the motivation to move forward and makes me determined to continue. If I really make achievements, I call it Ye Kaifu equation."

Ye Kaifu suddenly realized, he immediately said with a smile: "that's OK! In order to show my gratitude, all the machines that I will repair in the future, including all kinds of mobile phones that girls repair for me, will be secretly engraved with your name Zhang Yuan, OK? "

"You dare!"