Chapter 242 [The Team Battle Begins] (for Subscription)

Yenching, Huaqing University.

"Well, after you went to see him, how was he?"

Liu Zheng was also curious, wanting to know what happened to Yang Yu who almost killed Cao Man.

Lin Shu didn't know what to say, Yang Yu's condition was obviously very bad, he was no longer the high-spirited young student he had seen before, but now everything about Yang Yu was caused by himself.

Deep down in Lin Shu's heart, he felt only pity for Yang Yu.

"He regretted it, but some things cannot be resolved with the word 'regret'."

Liu Zheng nodded.

Liu Zheng very much agrees with Lin Shu's words that such a criminal act can only be judged by law, but thinking of the joint application signed by Yang Yu's parents in the school hoping to intercede with Yang Yu, he can't help asking: "His parents Now I am looking for a joint name from a student, hoping to treat him leniently, you—”

Liu Zheng wanted to ask Lin Shu what he was thinking.

Lin Shu also knew why Yang Yu's parents did these things. Cao Man didn't forgive him, so Yang Yu's parents could only find something to help Yang Yu from other places.

"Aren't we going to have a digital-to-analog contest soon?"

As soon as Liu Zheng heard Lin Shu's words, he knew that Lin Shu had no intention of paying attention to and caring about the behavior of Yang Yu's parents.

Lin Shu doesn't think that Yang Yu's parents' behavior is wrong, it's all for their own children.

But he won't be signing that application.

Liu Zheng looked at Lin Shu and said, "You're right, we're going to have a math competition soon, don't worry about it anymore."

On September 15th, the students participating in the Mathematical Modeling Contest on the Huaqing campus gathered in the computer room, which is an examination room specially prepared by the school.

Starting at 8 a.m., the website announced the competition topics, including undergraduates, postgraduates, and junior colleges.

It can be said that the teams from all major colleges and universities across the country clicked into the website to start topic selection at the first time.

It can really be said to be a very intense and exciting hundred-regiment battle, or even a thousand-regiment battle!

After the postgraduate competition questions were released, Lin Shu naturally began to select topics together with Liu Zheng and Cheng Xu.

There are 6 questions in total, and the distribution of question types is basically the same as that of previous years. Question A is a business question of domestic brand mobile phones, which is closely related to business; the remaining one is a typical big data question, one is a planning question, and there are 3 professional questions Problems, communications, meteorology, medicine.

The topic can really be said to be all-encompassing, but the team in the team battle does not have to know astronomy and geography, just specialize in one.

Liu Zheng looked at the questions on the computer, and said directly: "Mobile phone business questions, this question is to optimize the computer memory, it is all mathematical formulas, and the mathematical formulas will be quite huge. Think about this first and make an alternative. The difficulty is not a little bit."

Cheng Xu nodded. Liu Zheng was in charge of the mathematical formula itself. Since Liu Zheng said that it would be very large, it must not be simple. Looking at the planning problem below, he couldn't help saying: "How about the planning problem? This is the Civil Aviation Airport flight planning issues."

"This type is very similar to undergraduate mathematical modeling. I am afraid that many people will choose this question."

Liu Zheng looked at the questions below again, and couldn't help but say: "Medical and communication, it's hard to do if the team doesn't have relevant majors. The other one is on the surface of weather forecasting, but it's actually big data. And the last one, it should be a pure question. big data problem."

"Which of these two big data questions do you think is better?"

Cheng Xu said directly: "The advantages and disadvantages of these two questions are very obvious. Big data questions: the advantage is that it is easy to do it, and the results will definitely be produced. The disadvantage is that there are many people who do it. The final result also shows that the people who choose this question It is the most. The advantage of meteorological questions is that there is a certain professional threshold, which can discourage many people, but the threshold is not so high. If we can overcome the superficial professional knowledge and return to the essence, it will be easier to shine than big data questions. The disadvantage is that, We won’t necessarily be able to overcome that threshold.”

Lin Shu agrees with Cheng Xu's opinion, and in his opinion, weather problems will be easier to shine.

Meteorological topic E is as follows:

Explore the evolution law of heavy fog and predict the changing trend of heavy fog

In order to estimate the corresponding visibility under different heavy fog conditions and predict the dissipation of heavy fog, please answer the following questions:

1. It is well known that fog is related to meteorological factors near the ground. Build a model to describe the relationship between visibility and surface meteorological observations (temperature, humidity, wind speed, etc.), and derive specific relational expressions for the data provided in the title (airport AMOS observation. zip)...

"Why don't we just choose the meteorological topic?"

Lin Shu couldn't help saying: "This is really easy to shine."

Although it is said that persimmons should be picked softly, in the mathematical modeling competition, there are too many students who choose too simple topics, and it is not easy to stand out.

If it is a battle, then naturally you have to choose the strong according to your own strength. In this way, you may gain a lot of experience points from defeating the strong after completing the task. Of course, you can’t choose the strong without thinking, otherwise you may be looking for a dead end .

"Then it asks first, what do you think?"

Lin Shu directly replied: "The first question breaks the traditional modeling thinking from a technical point of view: show specific expressions. Traditional algorithms such as machine learning and neural networks are a black box and can only be obtained The relationship between the notes, but the size of the effect of the variable cannot be displayed, which is why it is difficult to understand the results obtained by machine learning. I think the solution to the first question is divided into two methods: basic and advanced. The basic method: Polynomial regression, ridge regression, stepwise regression; advanced methods: "RuleFit" in interpretable machine learning methods, I remember that this method is mentioned in Section 4.6 of "Explainable Machine Learning", such advanced methods are definitely in The eyes of the judges shine..."

No one spoke.

Lin Shu was still about to say something, but he didn't hear the voices of Liu Zheng and Cheng Xu next to him, who were in doubt. When he turned his head, he saw Liu Zheng and Cheng Xu staring at Lin Shu with wide-open eyes, with a trace of surprise in their eyes.

Section 4.6 in Explainable Machine Learning?

Liu Zheng and Cheng Xu looked at each other, the question in their minds should be the same question mark.

Lin Shu frowned slightly, feeling that the eyes of Liu Zheng and Cheng Xu were a bit strange, and turned to the second question of the meteorological question, and said: "Besides, the purpose of the second question is to allow us to analyze the degree of visibility based on the video, then We can recognize the image by extracting the feature information in the video. My thesis in the first semester of the first semester involved image recognition. The change of the fog in the picture corresponds to the change of RGB. After the image recognition, the change will become the corresponding hue. For the RGB value above, we should be able to refer to Chapter 9 of the book "Python Data Analysis and Mining Practice"..."

Cheng Xu looked at Lin Shu and asked with some uncertainty, "How do you remember it so clearly?"

Lin Shu frowned, feeling that this question was a bit strange.

"Just remember!"

"..."

A simple and casual sentence left Liu Zheng and Cheng Xu speechless.

When the team battle started, Liu Zheng and Cheng Xu instantly realized that there was a huge leg standing beside them.

I hope you can support me a lot!