Every Day Upgrades the Monsters and Explosives Equipment

　　 Yanjing, Huaqing University.

　　 "How is it, how was he after you went to see him?"

　　 Liu Zheng was also a little curious in his heart, wanting to know what happened to Yang Yu who almost killed Cao Man.

　　 Lin Shu doesn’t know what to say, Yang Yu’s condition is obviously very bad, he is no longer the energetic young student he had seen before, but now everything about Yang Yu was created by himself.

　　 Lin Shu has only regrets for Yang Yu deep in his heart.

　　 "He regrets it, but there are some things that can't be solved by the word'regret'."

　　 Liu Zheng nodded.

Liu Zheng agreed with Lin Shu very much. Such crimes can only be tried by the law. However, thinking of the joint application signed by Yang Yu's parents in the school hoping to plead with Yang Yu, he couldn't help asking: "His parents Now we are looking for a joint name with the students, hoping to treat him leniently, you—"

　　 Liu Zheng wanted to ask Lin Shu what he thought.

　　 Lin Shu also knows why Yang Yu’s parents did this. Cao Man did not forgive them, so Yang Yu’s parents can only find something that can help Yang Yu from other places.

　　 "Aren't we going to have a digital simulation competition soon?"

　　 When Liu Zheng heard what Lin Shu said, he knew that Lin Shu had no intention of paying attention to and caring about Yang Yu's parents' behavior.

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

　　 But he will not sign the application.

　　 Liu Zheng looked at Lin Shu and said, "You are right, we are about to compete in digital simulation, don't worry about this anymore."

　　 On September 15th, the students participating in the mathematical modeling contest on Huaqing campus gathered in the computer room. This is the examination room specially prepared by the school.

　　 Beginning at 8 am, the website announces the competition topics, which include both undergraduates, graduates, and junior colleges.

　　 It can be said that the teams from all major universities across the country entered the website as soon as possible to start selecting topics.

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

　　 After the postgraduate contest questions were released, Lin Shu naturally started choosing the questions with Liu Zheng and Cheng Xu.

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

　　 The topic can really be said to be all-encompassing, but the team does not have to know astronomy and geography, but only need to focus on one item.

　　 Liu Zheng looked at the question on the computer and said directly: "Mobile phone business questions, this question allows to optimize computer memory, it is all mathematical formulas, the mathematical formulas will be quite large, consider this first, make alternatives, the difficulty is not a star or a half."

Cheng Xu nodded. The mathematical formula itself is in charge of Liu Zheng. Since Liu Zheng said it will be very huge, it is certainly not easy. Looking at the following planning question, he can’t help but say: “How about the planning question? 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 following topic again and couldn’t help saying: “Medicine, communications, the team does not have a relevant major, it’s not easy to do. Big data problem."

Gu </span>　　 "Which of the two big data questions do you think is better?"

Cheng Xu said directly: "The pros and cons of these two questions are obvious. Big data questions: The advantage is that it is easy to start, and it will definitely produce results. The disadvantage is that there are many people doing it. The final result also shows that the people who chose this question It is the most. The advantage of meteorological questions is that they have 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, We may not be able to overcome this threshold."

　　 Lin Shu agrees with Cheng Xu, and in his opinion, he also thinks that weather topics will be easier to shine.

　　 Meteorological questions E questions are as follows:

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

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

　　 1. As we all know, fog is related to meteorological factors near the ground. Establish a model to describe the relationship between visibility and ground meteorological observations (temperature, humidity, wind speed, etc.), and derive specific relationships based on the data provided by the subject (airport AMOS observation.zip)...

　　 "How about choosing the weather topic?"

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

　　 Although it is said that the persimmon should be soft, but in the mathematical modeling competition, there are many students who choose too simple questions, and it is not easy to win.

If it is a battle, it is natural to choose the strong according to your own strength. In this way, you may get a lot of experience points to complete the task and defeat the strong. Of course, you can’t choose the strong without thinking, otherwise it is very likely to be a dead end. .

　　 "Then it's the first question, what do you think?"

Lin Shu directly replied: "The first question breaks the traditional modeling thinking in terms of technology: show specific expressions. Traditional algorithms such as machine learning and neural networks are a black box and can only be obtained. The connection between the notes, but the magnitude of the effect of the variable cannot be displayed. This is also the reason why it is difficult to understand the results obtained by machine learning. I think the first question solution is divided into two methods: basic and advanced. Basic methods: Polynomial regression, ridge regression, stepwise regression; advanced methods: "RuleFit" in interpretable machine learning methods. I remember this method is mentioned in section 4.6 of "Interpretable Machine Learning". Such advanced methods are definitely in The eyes of the judges shined..."

　　 No one speaks.

Lin Shu was still going to say something. UU reading www.uukanshu.com didn’t hear the voices of Liu Zheng and Cheng Xu beside them, they were puzzled. As soon as they turned their heads, they saw that both Liu Zheng and Cheng Xu were looking at Lin Shu with their eyes wide open. There was a hint of surprise in it.

　　 Section 4.6 in "Explainable Machine Learning"?

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

Lin Shu frowned slightly, thinking that Liu Zheng and Cheng Xu's eyes were a little strange, and then turned to the second question on the meteorological topic, and said: "Moreover, the purpose of the second question is to allow us to analyze the visibility based on the video, then We can then identify the image by extracting the feature information in the video. The first semester of my research paper involves image recognition. The change in the fog in the picture corresponds to the change in RGB. After the image recognition, it will become the corresponding color. For the RGB value of the 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, a little uncertain and asked: "Why do you remember so clearly?"

　　 Lin Shu raised his brows, thinking this question was a bit strange.

　　 "Just remember!"

　　"..."

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

　　 The team battle began, and Liu Zheng and Cheng Xu instantly understood that they had a huge leg standing beside them.

　　Https://

　　Genius remembers this site address in one second: 　Mobile version reading URL: