"Hey, look at this little thing, you can still take the initiative to greet people."

"Hehe, it's rare and weird, right? Otherwise, Doudou can be an Internet celebrity and can express himself so well on the Internet, but in reality, it is a matter of dozens of dollars to add a speaker. ”

"No, you're not interested in its ethical design and transparency in the decision-making process?"

"What if you're interested? Lao Liu, you will ask Qiao Ze later, but let me tell you first, it is said that Qiao Ze is very close to this Doudou, it is best to have a better attitude when you ask, don't let people misunderstand. ”

"This time, I will stand Lao Liu, in the future, artificial intelligence must be launched to establish a multi-level ethical review and decision-making review mechanism, Lao Liu, this matter will be handed over to you. Have a good talk with Qiao Ze, that young man is sensible and can definitely understand. ”

"No, Zhang Mingrui, Zhou Liang, I don't think you two are kind. It's for me to go and charge and say bad things, and then you two will be good people in the back, right? I'm sorry, but I'm just casually saying that, but I'm not curious about that. Anyway, there are artificial intelligence management measures, and if there are violations, someone will naturally take care of them. ”

"Haha, Lao Liu, you know that these two people are not good people."

……

In this way, several academicians chatted with each other, and waited until the two Doudou and a few students and parents had finished interacting with each other, and then they stepped forward and came to Doudou's side.

"Welcome Zhang Mingrui, Zhou Liang, Liu Jiechun, and Ma Xuming, four academicians, to Xilin University of Technology, but I heard what you were pointing at me for a long time just now, but although you advise, I will lose if I listen to you."

Doudou's rectum performance directly gave the four academicians a dismissal, and everyone glanced at each other, and they didn't know what to say to such a thing for a while.

I could only smile awkwardly, and said casually: "Yo, I'll recognize it all now, Doudou's ability to recognize people is not bad." ”

As for the vice president, who was in charge of greeting several academicians, he looked up directly at the sky.

Regarding the behavior of several academicians who were suddenly curious to match Doudou, he didn't plan to get involved, and there was no way to offend both sides.

"Haha, Doudou, are your ears so smart?"

"Academicians should have the conversation style of academicians, my ears are not smart, why are they so smart, do you still know? This is spread on the Internet, in case everyone laughs at you, I am irresponsible. ”

"Hehe, you little thing, do you know if you specialize in art? It's normal for us to not understand technical details, no one can know everything. Zhang Mingrui replied casually.

"But my dad knows everything, he doesn't just know math, he understands the technical details. Oh, by the way, he's not an academician, he's just a little researcher. His mentor was not an academician, but a small professor. Why is that? Uncles and uncles? ”

The vice principal next to him didn't change his posture with his head up, but he still subconsciously took two steps back silently, as if he hadn't heard anything.

No way, artificial intelligence is so upright.

"Hmm...... Hehe, that seems to be right, right? ”

"This little thing is completely at two extremes with his father."

"Haha, it's worthy of the artificial intelligence trained by Qiao Ze, and it's sharp."

"I said that if there is nothing to do, let's go to the Institute of Mathematics quickly, don't delay other people's work."

"Yes, yes, let's go, it's important to get down to business."

……

Several academicians lost their curiosity and got back into the car, and the vice president who was in charge of the reception was also relieved.

In Xilin University of Technology, Doudou's status is originally special, and in the eyes of old-school managers, it is not an exaggeration to describe lawlessness.

But for young people, they really eat Doudou, who is to reason with this?

To be honest, in fact, the vice principal also can't figure out how young people nowadays, obviously they were belittled by Doudou, and they were still elated one by one, and they felt unbearable when they hurt their self-esteem after being scolded by the teacher for a few words......

Now it seems that several academicians are also normal.

Of course, these are just complaints in the bottom of my heart, in short, it is nothing for him to pull the four academicians to the institute.

……

"Haha, Qiao Ze, this time we came, the Doudou general who was made out by you just arrived at the school gate is an army." Zhang Mingrui said with a laugh as soon as he entered the small courtyard of the Xilin Institute of Mathematics.

Qiao Ze had naturally received the news that several bigwigs had come, and Lu Bei had also asked someone to clean up the small courtyard early, and he still chose to receive the four-digit academicians of the Department of Mathematics and Science in the courtyard downstairs.

Qiao Ze nodded slightly, and Su Mucheng next to him had already stood up enthusiastically to greet him: "Uncle Zhang, Uncle Zhou, and these two academician uncles, you have worked hard all the way, sit down and drink tea." ”

"Okay, good, Xiao Su doesn't have to be polite." After a few people sat down, Zhang Mingrui introduced: "Come, let me introduce you to these two are Academician Liu Jiechun and Academician Ma Xuming. ”

"Well, I know, after the school told me, I asked Doudou to check the information of Academician Liu and Academician Ma on the Internet." Qiao Ze bowed slightly, and said hello.

Fortunately, Zhang Mingrui and Zhou Liang had dealt with Qiao Ze last year, and they knew that Qiao Ze's temperament was slow and hot, and they didn't talk about topics of interest, which was already very enthusiastic. I also said hello to the other two people who came for the first time before I came, and I didn't feel embarrassed.

By the way, the case was also solved, why did Doudou just see four people and call them all names.

"It's good to check it, and it saves us a detailed introduction, Qiao Ze, you know what we are here this time, right? Hey, thank you, Xiao Su. Zhou Liang said a word and took a cup of tea handed by Su Mucheng.

"yes, I know." Qiao Ze nodded.

"I heard that there were new encryption algorithms and compression algorithms, so Lao Ma and I came cheekily. Qiao Ze, since you've checked our information, you should know that we've been studying these things for most of our lives. ”

"Well, I know you're working on differential cryptanalysis methods. I have read some of your papers, and I also know that Academician Ma mainly does research on frequency domain transform image compression algorithms. Qiao Ze replied.

"Oh, and what do you suggest for our work?" Liu Jiechun asked.

Fortunately, Qiao Ze already has experience in dealing with academicians, so it's good to say anything straight.

"The results of your analysis of the cryptographic primitives differential cipher security in your paper are very reluctant. But at this stage, it is no longer of much significance. To put it simply, a well-designed cryptosystem is inherently resistant to differential cryptanalysis. However, when encountering more powerful supercomputing, based on the more primitive encryption principle, it can be cracked without differential cryptanalysis.

The same is true for compression algorithms. It is impossible to improve the compression efficiency qualitatively by the existing research. Otherwise, the most effective way to specialize in large-scale data will not be to haul it in a truck. In order to fundamentally solve the problem, it is necessary to bring forth the new in basic theories. But you can't be blamed for the limitations of the times. ”

Qiao Ze commented very pertinently.

"The limitations of the times, hehe, well said. Hey, we really didn't have your current conditions at that time, and we had to figure out everything on our own, but then again, Xiao Li's report said that the Doudou database used a new compression algorithm, what was the specific situation? Can you elaborate on that? Ma Xuming took the initiative to speak.

Although he was a little uncomfortable with Qiao Ze's evaluation, to be honest, he didn't feel too annoyed.

Taking the initiative to ask, there is really no provocation, the main thing is that he is really interested in the new compression algorithm. The layman looks at the bustle, and the insider looks at the doorway.

After studying Doudou, Ma Xuming really feels that the super high ability of Doudou management database is closely related to some new algorithms.

Hearing this, Qiao Ze asked, "Have you learned about the specific descriptions of supercomplex numbers and superbinomial forms in supercoiled algebra before you came?" ”

"It's just that the super-complex form is really difficult for us, Xiao Qiao, let me tell you, this time we are all prepared, and we have studied your Joe algebraic geometry." Zhang Mingrui on the side was afraid that Qiao Ze would misunderstand Ma Mingxu's attitude, so he interjected a sentence next to him.

"Oh." Qiao Ze nodded, then glanced at Su Mucheng beside him, and the woman immediately entered the room and brought out a stack of manuscript paper for Qiao Ze.

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"Then I'll give you an example, you should understand, first suppose a high-dimensional vector, $\mathbf{x}=(x_1, x_2,\ldots, x_n)$, where $x_i$ is the first $i$ feature of the data.

Each feature is then expressed as a supercomplex form in supercoiled algebra $x_i = a_i + b_i \epsilon$, where $\epsilon$ is the transcendent unit.

Now suppose we get a set of eigenvectors ${\mathbf{v}_1,\mathbf{v}_2,\ldots,\mathbf{v}_k}$ via PCA, which is the main direction of change of the data.

The data can then be projected onto the main feature vectors extracted by the PCA, and the first $k$ main components can be retained to reduce the dimensionality of the data.

The compressed data can be expressed as $\mathbf{y}=(\mathbf{y}_1,\mathbf{y}_2,\ldots,\mathbf{y}_k)$, where $\mathbf{y}_i =\mathbf{x}\cdot \mathbf{v}_i$ represents the projection of the data on the principal components of $i$.

In the same way, when it is necessary to decompress, the compressed data $\mathbf{y}$ and the main feature vectors extracted by pca ${\mathbf{v}_1,\mathbf{v}_2,\ldots,\mathbf{v}_k}$ are used to reconstruct the original data.

The refactored data structure is $\hat{\mathbf{x}}=\sum_{i=1}^{k}\mathbf{y}_i \mathbf{v}_i^t$. ”

Qiao Ze's handwriting was very fast, he had just finished explaining, and he had completed the important formula containing the three steps of data representation, analysis and reconstruction, and then handed the manuscript paper in his hand to Ma Mingxu on the other side.

If you know compression and supercoil algebra, you should be able to understand this simple example.

Of course, this is the simplest theoretical process, and when Doudou uses it, it also needs to consider data preprocessing, parameter selection and other issues to ensure the effectiveness and performance of the algorithm. But these are all trivial things, in Qiao Ze's opinion, as long as the theory is understood, the rest is a small matter, nothing more than to spend some time.

It can even be completely solved by artificial intelligence.

Doudou can use this database perfectly, and the artificial intelligence after upgrading in the future will be even more problematic.

Ma Xuming looked at Qiao Ze deeply, and then took the manuscript paper he handed over, and then he was attracted by the three formulas on the manuscript paper.

There are many feelings, such as the brain is a little insufficient.

Before I came, we did specialize in supercoiling algebra and transcendental geometry, but the time was still too short.

Just looking at these formulas is really a bit overwhelming.

I wanted to ask more deeply, but suddenly I didn't feel very embarrassed, so I could only silently memorize the formula in my mind, and then looked up at Liu Jiechun, who was tilting his head and looking at the manuscript paper, and simply handed over Qiao Ze's manuscript.

I thought that this guy would look at it without squeaking, but who would have thought that Liu Jiechun would suddenly say: "Oh, so that's ......"

Ma Xuming just wanted to ask his old friend what he saw, but who would have thought that when Liu Jiechun handed the manuscript to Zhou Liang beside him, he turned his head and winked at him. Ma Xuming understood in seconds, and then sneered twice in his heart, and he didn't bother to open his mouth to dismantle the stage.

After all, everyone came together as a whole, and there was no need to make jokes in front of two young people.

It's just that after this manuscript was turned around in the hands of the four people, several people didn't know what to say for a while, so their eyes fell on Ma Xuming.

See what he does?!

Ma Xuming took a deep breath, and then asked, "Well, this...... Can this algorithm achieve lossless compression? ”

"Why can't the restoration of high-dimensional feature codes be lossless?" Qiao Ze asked suspiciously.

"Well, I mean, lossless compression algorithm, this limit compression efficiency will always be limited by information entropy, how much can you approximate the limit compression efficiency of this algorithm?"

"Through the formula, it can be calculated that the ultimate compression efficiency can be equivalent to the entropy of high-dimensional information, if you are talking about compared with the existing compression algorithms, the efficiency can be increased by two to three times, and if you can go further in the future, it may even be faster than truck transportation.

Of course, in the current situation, it has to be analyzed according to the specific data type. Because this involves different types of data corresponding to the difference in the entropy of high-dimensional information. For example, images are more efficient than text, and videos are more efficient than images. The disadvantage is that higher computing power is required for compression and decompression. Qiao Ze could only answer in detail.

"Well, I guess I understand!" Ma Xuming glanced at Liu Jiechun and said that he had no problem.

In fact, before he came, he wanted to discuss the future of compression algorithms with Qiao Ze.

But after learning about José's discussion, he decided to talk about it again tomorrow.

After going back, I first understood the formula given by Qiao Ze, as well as the related supercoil algebra and transcendental geometry, so that I could have a basis for in-depth conversation. Now this state is not necessary.

As I said earlier, this is a limitation of the times.

After all, the basic mathematical theories they learned back then were not the same as the theories used by Qiao Ze, and now that they are older, they need to spend more time to understand what these young people have studied, which is very reasonable.

"Haha, although Qiao Ze is meeting for the first time, there is still a reluctant invitation. As I said earlier, I've been working on the encryption and decryption part of the algorithm, can you give me some information about the encryption algorithm you made based on Joe's algebraic geometry, and I'll see if I can learn something new from it. ”

"Yes."

Qiao Ze glanced at Su Mucheng, and the woman next to him took out a USB flash drive with a smile and handed it over, saying: "Uncle Liu, in fact, Qiao Ze is ready, this is what we mentioned in Uncle Li's report, those technologies are all in the USB flash drive, Qiao Ze knew yesterday that you were coming today, and specially asked Doudou to prepare it."

In fact, these things, we Xilin Digital Research Institute are applying for national patents. You just happened to be here, and you can also help us refer to it, whether to apply for an invention patent or a utility model patent. ”

"No problem, no problem, but in fact, you don't need to ask, I think you can apply for a utility model patent directly. After all, it's already been tested, isn't Qiao Ze already using it in Doudou's database? Liu Jiechun took the USB flash drive handed by Su Mucheng, and responded with a spring breeze on his face.

They are all thousand-year-old foxes, how can they not know the meaning of Su Mucheng's words.

I want to come to the USB flash drive to my own hands.,Just to say this sentence when you give it.。

But no one had the intention of taking these new things for themselves.

Not to mention the things contained in it, Li Jiangao took the initiative to report it through formal channels, and just because it was developed by Qiao Ze, no one moved this thought. There has already been a German professor who has learned the hard way.

The first paper released by Qiao Ze has begun to bury nails in the paper, engaging in invisible watermarks, which directly created a precedent for anti-plagiarism papers.

At that time, Qiao Ze was still not famous, and his influence was controllable.

Now with the blessing of Doudou, when the time comes, the facts will be laid out on Weibo and the evidence will be explained, and the number of fans will really make a fuss, and it will not only be a matter of losing face in the academic world.

After all, the competition between the Qiao Ze Natural Science Prize and the Nobel Prize has had a great impact on the international community. Now many ordinary people in the Western world who have never paid attention to academia and science and technology circles know that there is a young genius Qiao Ze in Huaxia.

In short, at least at this point in time, as long as the head is fine, no matter how red your eyes are, you can't mess with it, let alone dare to provoke it.

"Eh, by the way, what about Jiangao? Why didn't your teacher come? Seeing that Liu Jiechun accepted the USB flash drive, Zhang Mingrui smiled and asked.

"Uncle Li is busy with his own affairs." Qiao Ze replied.

"Haha, Uncle Li is thin-skinned, Uncle Li is not embarrassed to come over on this occasion today, can a few uncles understand?" Su Mucheng also replied at the same time.

When Su Mucheng's words fell, Qiao Ze, who finished speaking first, glanced at his woman, then nodded and said, "Well, Orange said a lot, she was right." ”

"Huh...... How can I not understand that? Hey, this person Jiangao is too outward. It's all my own people, so what's so embarrassing about that. Besides, there are more things that students and mentors can achieve for each other. Right, Joze. ”

Qiao Ze nodded, I have to say that Zhang Mingrui's mutual achievement is on his heart.

"In this way, you will call Jiangao later, and we will have a meal together in the evening. It's time for your Uncle Li to communicate with a few of us old men, it's not easy to come here, and you have to meet and talk a few words. ”

Qiao Ze glanced at Su Mucheng, and the woman immediately took out the phone: "Okay, I'll send a WeChat message to Uncle Li and ask Uncle Li to have two drinks with a few uncles." ”

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