Rule department scholar

20 points of energy are equivalent to two learning coins. It doesn't sound like much, but it doesn't make any sense to consume it!

the other side.

Zhang Hongtao stood at the door of the materials laboratory, looked at the group of people going away, and became more curious about Zhao Yi in his heart.

When he was talking to Zhao Yi just now, he deliberately asked some questions that he knew, and Zhao Yi answered several of them correctly.

It can be said……

As long as it was a question that he knew the answer to, the other party would be right.

Based on this, it is speculated that for those questions that do not know the answer, maybe the other party is right.

Although it was just a tentative conversation, Zhang Hongtao felt very surprised, because Zhao Yi is a mathematician, computer expert, and also has achievements in physics. It is said that he is also a researcher in a biomedical laboratory.

None of this has anything to do with chemistry!

It would be incredible if Zhao Yi had done some research in the field of metal materials.

He is an almighty person!

"If I have the opportunity, I should ask, what problems did I encounter in my research?"

"Maybe... he can give useful advice?"

Zhang Hongtao thought that he should discuss with Zhao Yi more in the future.

The other side is a real genius.

Although the basic knowledge may not be solid enough in the fields of chemistry and materials, some ideas of the other party may be very creative.

What scientific research needs is creativity.

After a large group of people left the material laboratory, they visited two teaching buildings together, including the laboratory building for graduate students, and then returned to the computer laboratory building at about the same time.

They crowded into a small conference room.

Zhao Yi was arranged in the front row. He glanced left and right and found that there were about thirty or forty people in the meeting room.

This number is definitely not many.

Although it can't keep up with those large-scale research, you must know that in the conference room, the minimum standard is an associate professor (associate researcher) or above, and there are two academicians, including Liu Tongen, the designer of the national navigation system, and the other is Capital Aerospace. University of Computer Science Fellow.

Zhao Yi was placed in the first row, probably because of his research achievements. He has the world's top achievements in the fields of mathematics, physics, and computer. This is the case in the academic circle, and if there are achievements, there will be a corresponding identity.

Even if he only participated in the meeting as a special researcher (intern researcher) of the Intelligence and Automation Laboratory, he was still arranged in the best position, and no one else had any objections.

But Zhao Yi is indeed 'useless'.

The content of this meeting has been determined, which is to assign the work of error correction codes in the positioning system.

The Capital University of Aeronautics and Astronautics is responsible for designing error correction codes. The intelligence and automation laboratory of Yanhua University is relatively small, and only a part of the work is assigned, which is equivalent to about a quarter of the overall error correction code.

The workload is also very stressful.

Error-correcting codes refer to codes that can be found or corrected at the receiving end after errors occur during transmission.

This kind of coding has the ability of error detection and error correction, and it is necessary to add redundant code elements to the original codeword to expand the difference between the codewords, that is, to change the original codeword into a codeword with a certain degree of redundancy according to a certain rule. , and make a certain relationship between the codes of each codeword.

The above explanation seems a bit complicated, but to understand it simply, it means that after each part of the program in the source code, a part of error correction code will be added to detect possible errors and deletions in the process of information transmission.

Error-correcting coding finds errors and automatically corrects them.

The reason why error correction coding is important is that during the transmission of information, character packet loss is likely to occur.

For example, a message: 1234567890.

When it is transmitted to the terminal, it may become 1234560, and the three characters of 789 are directly lost.

At this time, the role of error correction coding is reflected. The coding will automatically detect the integrity of information transmission by running the program, and will correct and add in time if any problems are found.

The existence of error correction codes ensures the security and integrity of transmission, and also allows information to be transmitted in multiple ways without fear of too much packet loss in the process.

The above explanation can almost know how much the workload of error correction coding is.

The computer academician of Shouhang is in charge of this work. He has already designed the framework of error correction codes. What the meeting needs to do is to assign work, assign part of the function codes to this person, and part of the function codes to that person...

and many more.

After the assignment work is over, it is time to discuss the sharing of information during the R&D process, because the whole is one thing to do, they need teamwork, there must be connection between codes, and there must be information sharing.

The meeting was held very smoothly, the only special thing was Zhao Yi, who almost fell asleep listening to it, because the whole content had nothing to do with him.

Liu Tongen invited him to come here, saying that he wanted to give his opinions, but the overall framework has been completed, which means that the work has been arranged, and there is no way to give opinions on the assignment.

Fortunately, the meeting was rewarding.

[Extra rest, learning currency +2. 】

[Extra rest, learning currency +2. 】

[Extra rest, learning currency +2. 】

The system prompt is really unexpected.

"It turns out that you can also get rest coins when you sleep during a meeting?"

"That's not bad."

Of course.

The after-effects are also great.

The teacher doesn't care too much about sleeping during class, and no one cares about sleeping during meetings, but looking at the old professor who is holding back a smile on both sides, Zhao Yi doesn't know what expression to show.

"Ahem...I didn't sleep well last night." He explained awkwardly.

"Are you thinking about guessing?" An old guy who didn't know said with a smile on his face.

"Ahem... yes, yes."

"I've heard that you're working on Guess, is there any progress?" The old guy seemed very proud of his correct guess.

"A little bit."

Zhao Yi's answer was somewhat surprising.

The old guy opened his mouth wide and asked, "Is there really progress? Can you tell me?"

"It's too much!" Another person next to him jokingly reminded that the old guy also knew that he was a bit too much. Other people's mathematics research will definitely not disclose the news until the results are confirmed.

He was just too surprised just now.

Zhao Yi shook his head and said, "I just decided which method to use, the real result has not yet been achieved."

"So it is."

Several people around nodded.

That's right!

That's Goldbach's conjecture. It's been almost half a century without any progress. Even if Zhao Yi is a genius in number theory, it's impossible to achieve results in such a short time.

A few people only said a few words jokingly.

the conference has ended.

Most of the people were discussing the content of the research work, which had nothing to do with Zhao Yi. He looked around and thought about whether he should go back first and let Liu Guangzuo continue to communicate here. Unexpectedly, Liu Tongen found him .

Liu Tongen sat next to him, and he knew something was up just by looking at him.

Zhao Yi wanted to leave quickly, but unfortunately he couldn't go anymore, he looked at Liu Tongen depressed, and wanted to hear what was going on.

Liu Tongen said with a smile, "This time I invite you here, mainly not because of error correction codes, but because I want to talk to you about math problems."

"Math problem?"

"It's information compression, transmission, and multi-data positioning calculations."

Liu Tongen gave a general explanation, and then asked, "Have you heard about information compression?"

Zhao Yi nodded slightly.

Liu Tongen said, "The performance of our satellites is still high-end, definitely at the top level in the world, but there are still big problems in signal compression and transmission. The main reason is the lack of mathematical theory support."

"Now there is a new digital compression technology in the world, have you heard of it?"

Zhao Yi continued to nod, of course he had heard of it, it was designed by him and Tao Zhexuan, and a special patent was applied for, and his name was on the patent.

What Liu Tongen thought was that Zhao Yi probably didn't understand, and his nod was only symbolic, so he explained carefully, "We hope to use algorithms to improve the performance of satellite cameras, that is, to make the resolution of satellites that will be launched in the future The rate is higher, it can store and transmit more image data, and it is hoped that the positioning can be more accurate.”

"The latter is easier to say. You only need a lot of data to do calculations, while the former requires a set of systematic mathematical theory support."

"Our program design was a bit chaotic before, and it was all stitched together from multiple plates. We want a systematic compression technology..."

Liu Tongen explained it carefully. The general meaning is that the efficiency of data transmission is too low due to algorithm problems. I hope to have a set of mathematical theories to support a new set of compression technology, which can be placed on satellites to improve satellite data capture. , transmission and other aspects of performance.

Zhao Yi kept nodding as he listened.

After Liu Tongen finished explaining in detail, he said, "It is definitely not possible to use traditional algorithms. The root of data compression to improve performance is to simplify the amount of information in captured data and increase the amount of information in analyzed data."

"It's better to make decompression more computationally expensive than compression."

"Mathematically speaking, it is to use simple information to shape complex functions. We only need to record simple joys, and then analyze complex functions when decompressing..."

"Correct!"

"Is such that!"

"Makes sense!"

When Zhao Yi was explaining mathematics, several professors gathered around. At first, they just listened to what the two were talking about. After Zhao Yi spoke, it seemed to become a personal class.

Others can only shout "right", "that's right", "makes sense", "makes sense", and so on.

At the same time they were surprised.

Data compression is a field where computers and mathematics are closely combined, but mathematically it should be divided into applied mathematics.

Zhao Yi is indeed one of the top mathematicians, but his field of expertise is number theory research, not applied mathematics.

There are so many fields of mathematics.

Many domestic mathematicians do complex mathematics, such as partial differential equations, topology, differential geometry, etc. There are several academicians in this field.

Number theory research and complex mathematics are related to a certain extent, and it can be said that they are closely related to each other.

Applied mathematics is different.

Applied mathematics is more closely related to complex mathematics than to pure number theory.

They really did not expect that Zhao Yi could also do research in applied mathematics, and after hearing Liu Tongen's explanation, he would be able to say so many things.

The people around, including Liu Tongen, could only nod along, and sighed in their hearts, "As expected of Zhao Yi!"

"It's really amazing!"

"This is the level that can win awards internationally!"

"..."

After Zhao Yi talked about some mathematical theory problems of data compression, Liu Tongen looked at him with bright eyes, "Come with me."

He took Zhao Yi to the small office next to him, and then stated his purpose, "In the name of the deputy designer, I formally invite you to join the work of the national navigation team."

"what?"

Zhao Yi suddenly felt a little uncomfortable, he felt a little too formal, "Didn't I do projects before?" He was referring to helping the Intelligence and Automation Laboratory, doing program design work, some of which were for the National Navigation System project.

Liu Tongen shook his head and said, "I mean, let you start the project alone. As I said just now, we need a set of mathematical theories for data compression. I think your ability is enough to take over this project."

"This……"

Zhao Yi hesitated a little, it was the first time he had experienced such a thing.

Liu Tongen said with a smile, "Don't put too much pressure on it. It's not too confidential. Data compression is a technology, not decryption. It doesn't matter if people know it. We just increase the performance of transmitting data. The technology can be popularized for civilian use.”

This is true.

After the digital compression technology designed by Zhao Yi and Tao Zhexuan applied for a patent, several large international commercial companies were discussing the use of the patent.

This is actually like communication technology, which can be used in any aspect, but because there was no mathematical theory for compressing data into a system in China before, he was asked to do a related research.

Zhao Yi thought about it and agreed.

It's easy for him.

He only needs to take the mathematical theory of digital compression technology, copy it, and apply it mechanically.