To be honest, this topic is a bit too big.

Global climate warms, and the long-term increase in the average temperature of the atmospheric system.

As a variety of greenhouse gases such as carbon dioxide increases, the long-wave radiation emitted by the earth and the underlying atmosphere is absorbed by more.

The solar radiation absorbed by the earth itself is unnecessary for long-wave radiation that it emits and leaves the atmosphere top, etc.

These are the most critical factors, of course, this is just a problem for the earth itself.

There are still many details that need to be considered.

Incineration of fossil fuels, such as oil and coal nowadays, and excessive deforestation, are all problems.

Greenhouse gases are highly transmissive to visible light from solar radiation.

It is highly absorbent to the long-wave radiation emitted by the earth.

Lu Zijian felt that his brain cells were constantly consuming.

The first thing to do is to obtain outliers and missing values ​​of the original data for preprocessing.

This is not a simple process, and it also requires the use of processed data to establish a visual model of the temperature changes with seasons during the period.

Then, wavelet analysis and MANN-KENDALL mutation detection should be used to explain the periodic changes and mutation phenomena of temperature around the world.

The K-means clustering algorithm must also be used to cluster the temperatures of different regions of the ocean around the world.

Combining the data set variance, we can obtain the change trend and fluctuations of the average temperature of the global ocean surface.

Lu Zijian felt that his brain was a bit big. The key point was that all of these had to be expressed through mathematics.

——Your sister’s organizing committee is full of bastards, why are you so hurt?

Of course, none of the participating teams at this moment does not curse.

It's so bad, which grandson came up with the question type...

"Did we pass some of it? After all, they are all children."

At this time, in the conference room of the organizing committee of the International College Student Modeling Competition, a referee said casually.

However, there seemed to be no apology on this person's face, but instead smiled terrified.

"It's nothing, it's time to put a burden on it. Flowers growing in greenhouses cannot withstand the wind and rain."

That's true, but it's too exaggerated to increase your difficulty.

This kind of paper is used in the graduation thesis of a doctoral degree in mathematics, and it feels a bit "chicken blood".

In the words of the organizing committee, you are all future elites in the mathematics community.

In the future, you need to support half of the sky of mathematics. What's wrong with this topic?

"I dare to predict that this time, the ICM pass rate is definitely the lowest."

Nonsense, I have to say that it takes several months to prepare for this type of question, just graduate from a doctorate in mathematics.

What about time to give the participating teams? Is it good to have only been 4 days...

However, it is obvious that the organizing committee still underestimates individual groups, such as Lu Zijian now.

We have begun to work on more than ten data factors that can affect global climate change, including other global greenhouse gas emissions, global carbon dioxide concentration, global ocean heat changes, and global ice and snow cover.

If this is seen by the organizing committee, I will probably curse myself again.

This is nothing in one go, without any omissions.

The key is, can you, Lu Zijian, calculate it?

You should know that this time the organizing committee’s requirements only meet any three of them, even if they pass the assessment.

At least it is also a successful participation award, commonly known as "qualification".

If you reach 5 of them, you will be honorary awards (second-class), and if you reach 7, you will be excellent awards (first-class).

As for the nominations for the special prize and the special prize, haha, to be honest, the organizing committee has not considered it.

After all, this time the topic is too perverted.

Even themselves, at most they are barely forced.

In this case, accuracy is also the criterion for assessment.

Although the final answers may be varied.

However, all the experts of the organizing committee have already made this proposition, and their answers are currently the most authoritative.

The organizing committee will not believe that there will be too perverted guys in this group.

After all, this calculation is not ordinary.

And this time, Lu Zijian had to speed up his own speed.

You should know that as far as Lu Zijian personally is concerned, his understanding and ability of mathematics is already at the level of "super god".

But the problem is that the formula that needs to be calculated is too large.

Lu Zijian has constructed grayscale prediction and SVR algorithm models.

At the same time, the data correlation matrix and lasso regression were used to analyze the data correlation and extract the key features of data change prediction.

——Tsk tsk, I was hungry, Lu Zijian himself didn’t know how long it took.

“I want to apply for takeout…”

——Sure enough, this is still the routine.

The staff knew that this guy must have something wrong.

"Come on."

This time, there is no need to apply for the organizing committee again, after all, there is already a lesson in the past.

It's still the same Michelin three-star store, but this time, Lu Zijian was not in the mood to get into the Wellington Steak.

Ordered four different flavors of pizza meaning...

During the meal time, the staff did not refuse Lu Zijian's invitation this time.

It’s useless to not eat. Anyway, this guy owes me what he owes me. Thinking about his overtime pay, I feel a little sad.

After the meal, Lu Zijian continued to fight and the staff continued to take a nap. As for the two supporting roles, well, the reset version of "Resident Evil 2" seems to be quite fun.

Lu Zijian also determined that temperatures below -40°C are extremely cold weather standards based on the "cold degree level table" formulated by the meteorological professional.

The global average temperature value in 50 years was obtained.

Establish an analysis table of icon correlation, analysis of covariance and correlation coefficients, and mutual information entropy algorithm model.

Lu Zijian has long concluded that it can be said that there is no contradictory relationship between global warming and local extreme cold weather phenomena.

It can even be said that to some extent, it can be believed that global warming has caused local extreme cold weather.

Of course, this requires a large number of mathematical formulas to prove it.

Lu Zijian even proposed an indicator to measure the complexity of global climate.

It can be said that this is a completely innovative move.

Before Lu Zijian, the most common indicator of the climate complexity of a certain region appeared.

Not that I don't want to do it.

Instead, the mathematical steps and verification required are too huge and responsible.

No one wants to be thankless like this.

Because even if we draw a conclusion, how many regions will recognize this indicator?

Lu Zijian also established a BP neural network model.

The depth is 5 layers, and each layer has 30 hidden neural units.

It can predict the complexity of the global climate in the future.

Lu Zijian is completely working on a paper that has never appeared before.

During this period, Lu Zijian only slept for 2 hours.

With high-intensity calculations, Lu Zijian felt that he was almost hallucinating...
Chapter completed!