Rebirth 07: Start adding points from elementary school students

Chapter 459 Why use a butcher knife to kill a chicken?

Although Li Yan was shining, Chen Fan still couldn't understand what he was supposed to not understand.

It took him a while to react to the word "Field Award winner". After all, this title sounds really out of reach.

Chen Fan basically understood the words "1980s" from Li Yan's words.

Seeing Chen Fan's look, Li Yan went straight into the explanation phase:
"It is well known that in the study of partial differential equations ..."

"Wait, wait," Chen Fan raised his hand to interrupt, "Your opening move is not well-known at all."

Li Yan nodded in agreement. "What most people don't know is that in the study of partial differential equations, classical solutions often require functions to be sufficiently differentiable, but this cannot be required in actual operations, especially when the solution may be discontinuous or have sharp features."

Chen Fan understood the literal meaning.

"A sticky solution is one that can be solved in a wider class of functions, including non-differentiable functions. The core idea is to introduce the concept of 'weak' solutions that satisfy a special 'maximum principle'."

Chen Fan's eyes began to wander, and he was trying hard to understand what Li Yan said.

But even though he has learned advanced mathematics, what Li Yan is saying now is still too advanced.

“…at every point there is either a local maximum or a local minimum, so even if the function is not differentiable at some point, it can be verified by the comparison principle whether it is a sticky solution.”

"Anyway, it provides a new solution." Chen Fan concluded.

Li Yan was too lazy to explain and continued speaking: "So we just need to..."

Here it comes again, “as long as”, the Versailles method that high IQ guys are best at.

The key is that when they talk about ideas, what they say is often not Versailles.

Thinking of ideas is something that is harder than climbing to the sky. Those who can think of them are gods.

But once you think about it, it's just a "no-brainer".

"As long as this problem can be solved, there is no need to avoid singularities." Li Yan continued, "The wall-chasing game is very similar to the underlying algorithm of autonomous driving. Our goal is to pursue the optimal solution. Avoiding being caught is equivalent to avoiding congestion. Choosing a road that minimizes the probability of congestion can be regarded as the optimal strategy algorithm for solving the wall-chasing game."

"what……"

"There is more that can be done. With this algorithm as the basis, algorithms such as multi-vehicle collaborative tasks and special vehicle emergency channel design can all be achieved."

"For example, for fire trucks, ambulances, police cars and the like, can we calculate the optimal path for them while letting all automatic vehicles give way?" Chen Fan pondered.

“Not only that, it may even be possible to do this without significantly affecting the operating efficiency of other vehicles.”

"Ah?" Chen Fan was shocked.

"If you just want all the cars to give way, you don't need an algorithm, but a powerful command."

Chen Fan felt his brain buzzing.

It took him a while to speak again. "I understand that when we design similar algorithms, we are unable to solve the singularity problem. In order to avoid BUGs, we can only avoid it."

Li Yan nodded.

"And you are going to unlock this thing and realize an algorithm that is not afraid of any situation?"

Li Yan continued to nod.

Chen Fan slapped himself on the forehead, "Fuck... do you know what I'm thinking?"

Li Yan shook her head this time.

"Why use a butcher knife to kill a chicken?"

Li Yan laughed, "Who is the chicken?"

Chen Fan became excited. "It's a national competition for teenagers. You're dealing with a problem that hasn't been solved for decades. Aren't they considered chickens?"

"Yu Keyu must be so angry to death when he heard that." Li Yan shook her head, not knowing whether to laugh or cry. "What I'm curious about is, why are you so confident in me?"

"Ok?"

"You're still confused." Li Yan patted Chen Fan on the shoulder. "Brother, you know this is a problem that hasn't been solved for decades. Are you just going to assume that I can solve it?"

"Then... you can't?"

"I analyzed the HJI equations, which are a subclass of the Hamilton-Jacobi equations..."

"There's no need to explain this, Yan Shen. My brain has automatically blocked HJI."

"Okay, anyway, I am analyzing the viscosity solution of the HJI equation around the singular surface where the derivative is not clearly defined. I am also analyzing the gain and loss rate of the game participants in the state of the singular surface of the equation. The results are not out yet, and there are many details to adjust."

“…I know every word.”

Li Yan stretched lazily. "With this much progress, I feel we are on the right track. We just need an exciting result. But we don't need to be too optimistic. Even if we are sure there is an optimal solution, there may be many problems in applying this solution to specific algorithm operations."

Chen Fan staggered a few steps and slumped down on the sofa, "Brother, just tell me, what can I do for you?"

"study."

Chen Fan sat up straight again.

"Try to keep up with me, Chen Fan." Li Yan looked at him, "Just try. If you gain something, it will be worth it for dragging you into the competition."

Thunder roared in Chen Fan's heart!

He had been so obsessed with making comparisons before, trying to avoid it, but it turned out that Li Yan didn't even consider him as someone on the same level.

Yes, how could they be considered on the same level?

In this world, among people of the same age, is there anyone who dares to say that he is on the same level as Li Yan?
The position where Li Yan was standing was out of their sight. The olive branch he extended was not for showing off or feeling a sense of accomplishment. It was just a token of gratitude for their old friendship. In the final analysis, it was to give Chen Fan a chance!

Giving him a glimpse of the view from the top of the mountain.

Maybe they don't need any reason, they just have a familiar classmate to take them around.

"Okay." Chen Fan just replied.

“When is the final result due?”

Brother, you really don't know anything.

"July 20th."

"Oh..."

"Time is still a bit tight..."

"so long?"

Chen Fan gradually developed some resistance to Li Yan's pretense, "What's going on? Are you going to solve the math problem in the next two days?"

"Almost. Haven't I been calculating all along?"

"You haven't been talking to me all the time?"

"My brain is calculating, and the computer is calculating too."

…Really don’t try to understand this person.

So, a few days before the submission of the competition papers, Chen Fan had a very rare opportunity to "watch how Li Yan studies."

Although there were always some interruptions from people telling him good news about the Jiaolong phone that made him sweat, he was still happy to listen.

After all, he is a "major shareholder" holding 2% of the shares. Once the dividends come, he won't have to work for the rest of his life.

Chen Fan is still in high school and cannot experience the joy of the previous sentence.

He originally wanted to explore the "secret of Li Yan's genius", or simply experience the feeling of being shocked by a god.

But I didn't expect to be so confused after reading it.

Li Yan did make progress in computing content, but more time was spent learning completely irrelevant things.

Reading a number theory book is like reading a novel. I laugh out loud, sigh with emotion, pace back and forth, and shake my head.

Li Yan described the book as "up and down", and was even so engrossed in it that she asked someone to buy some original English books - the bookstore owner personally delivered them to her, and he said they were "still warm".

Chen Fan didn't understand at all. What kind of learning method was this?
"God Yan, let me ask you a serious question. Will what you are learning in other fields now...help you in your research on the optimal solution to the wall-chasing game?"

"Have."

Chen Fan maintained a thirsty look.

"Open up your mind. The amount of calculation is not a problem now. The key is the direction. Once the general direction is right, you have to control the small directions well."

I don't understand. Li Yan is now improving her English skills by further learning French. What's the big deal?
Because Li Yan was just talking nonsense. The truth is not as mysterious as he said. He just used the system to increase his ability and solve the problem.

Ding!
While still talking to Chen Fan, his mind was distracted for a moment, and a thought suddenly ran away like a wild horse, crashing around and leaving magical marks.

An inexplicable flash of inspiration.

[Mathematics +1, level 39 skill, total ]

78% progress, which is on par with current computers.

This is the horror of "learning speed".

The mountain that seemed unreachable to Li Yan before was already under his feet in just a few steps.

Although breaking through 80% is still very difficult, there will always be two, so why fear?
In the days to come, he can focus on improving his skills and turn himself into a monster with 80% of all skills in the shortest time and with the highest efficiency.

More miracles were waiting for him at the top of the mountain.

Chen Fan was still trying to figure out how to understand Li Yan's words, but he saw him suddenly typing frantically into the keyboard.

"What...what happened?"

Li Yan just raised her hand to signal Chen Fan to wait.

After more than ten minutes, the torrential keyboard typing stopped.

"…Why, who are you fighting against?"

"Playing with the wall chaser."

"Wow, we won?"

"Won."

Chen Fan made the "嗐" shape with his mouth, but his eyes were wide open.

"Grass?"

"You're pretty awesome. Your mouth is clearly '嗐', but when you say it, it turns into grass."

"No, you figured it out?"

"Ah."

What did you do to figure it out? You didn't even study it!

"You were obviously reading number theory and you never stopped!"

"It's just a flash of inspiration, that's what happens."

After listening to the explanation for twelve minutes, Chen Fan said that his mind was a mess and he didn't understand anything.

"It's okay. I'll explain it to you in detail later. Just learn it first."

Is this true? A problem that has not been solved for 50 years was easily solved by Li Yan just because of a youth competition?
How long did this take?!
Chen Fan remained in a state of shock.

Li Yan immediately got down to work. "Now we just need to see how to use it. We also need to take care of how to present it later. Chen Fan, you can really help with this."

Finally, the time has come for me to use my skills!
Then Chen Fan found that what he had worked hard for half an hour was completed by Li Yan in just five minutes.

His brain was clearly working at full speed and maintaining the highest level of concentration throughout the entire process, but the past half hour had made his brain feel like smoking, and he felt hot all over even in the air-conditioned room at night.

As a result, he watched Li Yan finish his work in five minutes while chatting and checking WeChat from time to time.

However, Chen Fan has a good mentality. He now feels that this is the opportunity given to him by the gods to follow in their footsteps.

Although there is a difference between immortals and mortals, and it is impossible to catch up no matter what, he should try his best. When he looks back, he may find that others have been left far behind him.

Chen Fan went home at ten o'clock in the evening. When he came to Li Yan's office at nine o'clock the next morning, he found that the immortal had left and his back could not be seen.

Li Yan already has a completed version of the "Baijiang New City Autonomous Driving Test Model" in his computer.

It perfectly reproduced the content and method of presentation that the two people discussed the night before.

Li Yan even applied a green light spot special effects filter to the entire model, which paired with a black background to give it a futuristic feel.

He does like The Matrix quite a bit.

"Is it done?" Chen Fan tested it a few times. "Am I redundant now?"

It is now Sunday, July 7th.

"Where is Yan Shen? We agreed to meet at this time." Chen Fan said as he took out his cell phone to send a message.

Just then Li Yan pushed open the door of the lounge.

"What the hell, what are you doing?"

"Nothing, I just didn't sleep well." Li Yan, looking tired and with bloodshot eyes, appeared at the door, yawning.

"…It's rare to see you like this."

It's overclocked, to see if it can improve the "learning speed". Unfortunately, Li Yan just completed the things he already knew more efficiently, and the improvement has nothing to do with "learning".

But it also further clarifies the triggering conditions of this skill, which is not bad.

"You can test it later. If possible, send the finished product and the paper to the competition organizing committee today." Li Yan yawned again.

"Have you finished writing the paper?"

"Of course, at least I solved a problem."

Shangjing, Organizing Committee of the National Youth Science and Technology Innovation Competition.

"Principal Cai, are you sure Li Yan will participate in the competition?" asked a man with gray hair but actually only forty years old.

"Are you sure that what Old Meng said can be false?" Cai Zhendong patted his big belly.

"It hasn't been sent yet? We are looking forward to it too."

"Lao Yu, the deadline is the 20th. You set it. Don't be nervous."

"I didn't expect that someone would really press on to this point, without even sending in a first draft."

"Wait for the surprise. How is it? Is it stressful?"

“Well,” Professor Yu waved his hand, “It’s not a big deal. I’m just really curious.”

"You know what this kid has achieved." Cai Zhendong shook the phone in his hand, "You can really buy one. It's more amazing than you think."

"You really love him deeply, Principal Cai. Tell me the truth, who is this Li Yan?"

"He's a genius."

"That's it?"

“That’s all.”

Cai Zhendong's pause made Professor Yu look displeased.

"Okay, then I'd like to see how far this genius can get you to go for him..."

As soon as he finished speaking, another judge rushed into the meeting room where the two of them were, "Here it is, Li Yan's competition results!"

Seeing how excited he was, Professor Yu frowned, "Why are you still making so much noise, Principal Cai, shall we go take a look?"

Cai Zhendong stood up confidently and said, "Let's go!"

As soon as he walked into the office hall, Professor Yu frowned when he saw a group of people gathered together discussing something.

When I got closer to the computer and saw the title, it was so wrinkled that it could hold a playing card.

"Research on autonomous driving path selection algorithm based on the optimal solution of wall-chasing game".

"The optimal solution to the wall-chasing game?" He looked at Cai Zhendong, "We haven't figured it out yet."

Cai Zhendong curled his lips, "Here is the thesis."

Professor Yu only glanced at the paper for a few seconds, then signaled the staff to stand up, sat down himself, and began to read it carefully.

Twenty minutes later, he took off his glasses, rubbed his eyes, and sighed:

"Why use a butcher knife to kill a chicken..."

(End of this chapter)