Omnipotent Data

Chapter 344

On February 14th, at 20:00 New York time and 8:00 Kyoto time, the 22nd American Global College Student Mathematical Contest in Modeling officially kicked off.

As mentioned before, this is the largest number of participants since the event was held.

A total of more than 10,000 teams from more than 30 countries and regions around the world participated.

Except that the competition takes one day longer and the language used in modeling papers must be English, the other rules are no different from the national competition.

Thirty minutes before the start of the match, Cheng Nuo met the other two teammates arranged for him by the academy again.

When the two of them saw Cheng Nuo, they couldn't help but feel their teeth itch.

One of them asked, "Student Cheng Nuo, what did you do two days ago? Didn't you say that we should find a set of modeling problems a few days before the competition and have a good time with it?"

Cheng Nuo clasped his hands together, "Sorry, sorry, I've been busy with a very important matter these two days, so I had to push this session down."

"However, I think it shouldn't have any impact on our final results." Cheng Nuo added with a faint smile.

Another teammate couldn't help but wryly smiled when he saw Cheng Nuo's confident expression.

Where did this guy get his confidence?

You know, since they formed the team, this seems to be only the second time they have met.

In other words, the cooperation between the three of them is almost zero.

Even if he knew that Cheng Nuo was strong, could he still be strong enough to be able to drag two out of one?

This is a beauty match where the strong are like forests!

…………

At 8 o'clock sharp in Kyoto time, the download channels for modeling topics are opened on major official websites.

There are six modeling questions in the competition, choose one of them to answer. Each topic has its fixed focus.

Question A, continuous type.

Question B, discrete type.

Question C,

Big Data.

Question D, operations research/network science.

Question E, Environmental Science.

Question F, policy.

Choose one of the questions in A, B, and C, and you will participate in the MCM (Mathematical Modeling Contest) competition by default.

If you choose D, E, and F questions, you will participate in the ICM (Interdisciplinary Modeling Contest) competition by default.

If you want to talk about the difference between MCM and ICM, the general MCM competition topic is more specific, the expression is concise, and the requirements are clear.

The ICM competition topics are more open, the problems are more "big", more macroscopic, and the length is longer. They are often issues of common concern on a global scale, so they generally do not depend on specific cultural backgrounds or living habits. On the other hand, quite a few of the MCM questions are based on life in the United States, which is not familiar to contestants from other countries, especially China.

Therefore, in most cases, Huaguo contestants will choose one of D, E, and F to answer, that is, to participate in the ICM competition!

Of course, the most important thing is to look at the field that the team is good at, and this point of view cannot be regarded as a conclusion.

"The topic has been downloaded." Cheng Nuo heard the voice next to his ear and turned his attention here.

The three of them leaned slightly, staring at the computer screen, reading each question carefully.

Question A is about the driving of road cars.

Question B, about the arrangement of wheelchairs in the airport waiting room.

Question C is the problem of the US medical system under the big data.

Sure enough, the three MCM questions all have a strong "American style", which can be said to be very unfriendly to Hua Guo players.

Especially for question C, you must know that the medical system in the United States is very different from that in China.

In this case, if the Chinese team chooses this question, it will take at least three or four hours to look up relevant information on the Internet to learn about the medical system in the United States.

In a modeling competition where time is so precious, that's a bit of a luxury. Unless some teams are very good at big data modeling, no one will choose this topic stupidly.

Cheng Nuo could almost predict that among the six questions, this question was probably the least chosen by the team.

After all, among the contestants from more than 30 countries participating in the competition, only the American contestants know the basics of this aspect, so there is no need to waste unnecessary time.

Cheng Nuo then looked down at the last three questions.

Question D, Evolution and Impact of Measuring Association Information Networks.

Question E, the construction of sustainable cities.

Question F, Modeling Refugee Immigration Policy.

"Which way should we choose?" Cheng Nuo's teammate from the School of Economics and Engineering asked.

The teammate from the School of Foreign Languages ​​didn't speak, but turned his eyes to Cheng Nuo, which was self-evident.

Although he was skeptical about Cheng Nuo's strength, after all, Cheng Nuo was the captain of the team in name, so at a time like this, he still had to listen to his opinion.

Cheng Nuo pondered for a few seconds, then said slowly, "My personal opinion, choose A. Of course, if you don't want to, we can change it."

He is an indifferent attitude.

Anyway, he was able to come to all six questions, and there was no pressure to reach the level of O award (special prize) that he had promised before. The difference was only a matter of how long it took.

For example, if you choose question C, no matter how capable Cheng Nuo is, it will take some time to check the relevant information. This was somewhat inconsistent with Cheng Nuo's idea of ​​saving time.

Therefore, his personal opinion is to choose the road vehicle driving problem that is no stranger to the three of them.

The road driving rules in the United States and China are the same, and both drive on the right.

After thinking for a while, the two teammates nodded in unison, "Okay, just choose question A."

In less than five minutes, their group's topic selection was finalized.

Next... the official start of work!

Cheng Nuo was in charge of modeling, the teammate from the School of Engineering and Design was in charge of programming, and the teammate from the Outer School was in charge of writing the thesis.

The three perform their respective duties.

Cheng Nuo sat in front of the computer and carefully read the modeling problem from beginning to end:

[In some countries that require cars to drive on the right, multi-lane highways often use such a rule: drivers are required to drive in the rightmost lane when driving, except in the case of overtaking, they should move to the adjacent lane on the left , overtake, and then return to the original driving lane (ie, the rightmost lane), please build and analyze a mathematical model to analyze the performance of this rule in light and heavy traffic (ie, when there are fewer vehicles and more traffic congestion)? You can study the balance between traffic flow and safety, the effect of maximum or minimum speed limits (i.e., too low or too high a speed limit)...]

Different from the other five questions, which are high-level, new urban construction and refugees and immigrants, this is a very confident question. Cheng Nuo estimated that there are not a few groups who choose question A.

However, the O award is not evenly distributed to each topic, but the best ones get it. Therefore, it is also possible that all 20 O awards appear in one topic.

This is also the reason why the two teammates readily agreed to choose question A.

After carefully reading the questions, Cheng Nuo was not in a hurry to start modeling.

More haste less speed.

Before modeling, the preparatory work must be done.

He needs to find some papers and books, and learn some knowledge about road traffic.

It doesn't take long, about half an hour to get it done.