Hammer of Technology

Otherwise, he has the heart to fight with Xu Ruixuan.

The most outrageous thing is that he used his deity's account to comment on the answer, telling netizens that the truth is not the case, and then no one cared about it.

Of course, there are also clear-headed people on Zhihu who criticized Xu Ruixuan's answer, emphasizing the difficulty and significance of Qiu Chengtong's competition, but again, no one cared about it, and some even asked if it was sour...

All resentment finally turned into one sentence: "You are enough!"

In exchange for a burst of joy in the dormitory, there were all kinds of wretched laughter: "Haha..."

……

Well, Ning Wei can still tolerate the bad taste of his roommate.

I understand why these guys are so wretched.

To put it bluntly, how can a child who can be admitted to a double first-class university not have the heart to become a top student?

Even Mr. Xuan and Luo Xiang, who had already chosen to lie flat in their sophomore year, at least worked hard in their freshman year, but mathematics is really too talented.I just can't get up.

And it is said to be lying flat, but in fact, the scores of both of them are quite good in computer-related compulsory or elective subjects such as data structure and algorithm, software design method, statistical computing and software package, C language and internship.

At least he can be ranked in the top ten in the class. If it weren't for the professional compulsory courses such as complex variable function, abstract algebra, and functional analysis, it would not be necessary to rely on Ning Wei and Liu Cong every year to pass.

So it feels good to make someone close to you happy.

Um, someone close?

Listening to the laughter in the dormitory, Ning Wei thought of the cyberbullying he had just encountered, picked up his phone again, and clicked on WeChat.

There are still many people who add him, but the style of the message requesting verification has indeed changed.

"Master, I was wrong! You are not pretending, you are real!"

"God, add me!"

"Looking at nature, you are awesome!"

"I admit my mistake! I'm an idiot!"

……

Ning Wei sighed, this WeChat and phone number are useless.

No matter what kind of reason is famous, good or bad, if one's private number is leaked, there will always be a lot of troubles.

Fortunately, now I have a reason to change the number again, and I can explain it to my family later.

Thinking of this, Ning Wei clicked on the small video, went directly to follow and found Huo Zhiheng's video account.

All the videos he commented on before have been taken down, but he actually updated it again today...

"First of all, I have to admit that if the brother in the previous comment area is really the author of this paper, he is still a bit of a level! But that's all. Why? Please listen to me slowly!"

"...In summary, this paper is nothing more than rubbing off on Professor Smith's hot topic. Does this paper advance the understanding of the NS equation? No! Does it prove that the NS equation has a unique solution in three-dimensional space-time? No! What practical problems does it solve, and does it have any guiding significance for solving practical problems? Not to mention! So is it meaningful to blow him so hard?"

……

After watching this video, Ning Wei closed his eyes, and when he opened them, his face was full of joy!

Ben thought about wasting his time all night and failed to choose a direction for the next paper. Who knew that the video host was so considerate and directly helped him find the direction!In other words, it helped his brain find its way!

He even discovered that he could respond academically to some verbal stimuli without reading books or attending lectures!

God!

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046 Turbulence Algorithm

That's right, when Ning Wei watched Huo Zhiheng's subtitles in the video and listened to his loud voice, a practical Internet technology derived from the process of solving NS equations - turbulence algorithm - suddenly appeared in his brain.

This feeling is very strange.

It was as if the words of the video host in the video kept inspiring him, and then a complete algorithm structure combined with the knowledge he had learned before was displayed in his mind.

Followed by another burst of inspiration.

If you don't record this inspiration, Ning Wei feels that he will go crazy immediately.

So he jumped out of bed.

"What's wrong, Ning Wa, are you scared to pee by my brilliant writing?"

"Bah, you guys are talking about you, don't bother me, I have an idea to record!" Ning Wei casually responded to Xu Ruixuan, then sat down in front of his computer, quickly turned on the computer, and clicked on the browser.

First of all, he needs to make sure that the turbulence algorithm derived from the NS equation that suddenly appeared in his mind has not yet been invented.

Soon, Ning Wei was sure, indeed not!

Because if this turbulence algorithm has come out, everyone will not still have nothing to do with those malicious web crawlers, and can only deal with them.

That's right, the turbulence algorithm that popped up in Ningwei's mind at this time is an intelligent algorithm specially designed to deal with malicious web crawlers.

In the Internet age, the network is full of various web crawlers.

The so-called web crawler is actually a program and script that automatically grabs network information in batches according to certain rules.The most widely used is probably the search engine. Through web crawler technology, these search engines will enter the collected information into the database at a certain frequency through these web crawlers, so as to ensure that users can retrieve more information when searching from the engine entrance. More accurately find what you want from the huge and complex information on the Internet.

This type of web crawler is generally referred to as a generic web crawler.

The other category is focused on reptiles.

This is a technology that continuously crawls specific websites or specific information.

Generally speaking, it is no problem to comply with the robots protocol to use this technology.

But in fact, many web crawlers all over the Internet are not doing human affairs.

The case of web crawlers that is closely related to everyone is scalpers grabbing tickets.

For example, 12306 is the most visited by various web crawlers in the world.

Every holiday, especially during travel peaks such as May 12306st, [-]th, and Spring Festival travel, train tickets in popular areas are always extremely difficult to get, or even sold out in seconds.And at this time, the [-] software is difficult to open, and it is basically thanks to this kind of web crawler.

According to statistics, the peak of Huaxia 12306 hits reached 59 billion times per hour, with an average of more than 160 million hits per second.Obviously not a number that normal users can swipe out.

The official program also uses various upgrade verification codes to prevent scalpers from robbing tickets. For a while, those verification codes that can be called abnormal levels are even so difficult that an ordinary person is at a loss.

Even though the function of combining tickets with people is now launched, countless ticket-grabbing software still provide this service by purchasing ticket-grabbing packages at a higher price.

In addition, major airlines are also hardest hit by illegal web crawlers, especially those airlines that often release special air tickets.Almost every time a special air ticket is released, it will be sniffed by this kind of crawler, and then it will be booked directly without payment.

For the airline company, usually after booking such special tickets, there will be half an hour to pay the buyer. If you do not pay within half an hour, you will enter the ticket pool again, but the crawler technology can make these special tickets enter the ticket pool. Get it again within 0.01 seconds, until the scalpers find a buyer who is willing to increase the price, and use the buyer's identity information to purchase and pay for the ticket.

It can be imagined that no matter whether it is 12306 or the major airlines, they all hate this kind of crawler.

After all, they can't earn a penny from the price increase of the scalpers, and it also increases the network load.

In particular, the major airlines originally wanted to pass on profits to customers and increase customer stickiness. As a result, customers did not enjoy low-priced tickets, and they might be annoyed because they paid high prices and did not enjoy corresponding services.

In addition to this kind of web crawler, there are also some more malicious web crawlers, which silently lurk in the network and continuously crawl various private user identity information, user systems of major hotel chains, various APPs, etc. , are the targets of these web crawlers.

It is a pity that there are currently no good defensive technical means against these malicious web crawlers, and generally rely on various hardware and software firewall technologies to isolate them.

What makes countless developers even more embarrassed is that security and convenience are often not compatible.

It's like the crumbling verification codes issued by 12306, which temporarily stopped the crawlers from raging, but also made countless ordinary people dizzy.

At this time, the turbulence algorithm in Ning Wei's mind can solve the problem of malicious reptiles while taking convenience into consideration.

Expressing the function of this algorithm in an understandable language is probably that the steady-state data flow will flow slowly and normally at the data interface of the server like flowing water.Every connection request will directly affect this steady state data flow.It's as if the calm flowing river is turbulent because of the small fish going upstream.

After the turbulence algorithm is configured on the server side, by upgrading the verification system, the steady-state data flow can pass countless visits to intelligently determine whether various connection requests are normal or other illegal requests, and thus determine whether the web crawler While doing data crawling, it is still the normal visit of normal customers.

After making the distinction, the algorithm can automatically direct these crawlers to the target and directly lead to a data turbulence, where these crawlers can only crawl all kinds of chaotic and complicated invalid data and then feed it back to the crawler author.

If this process is carefully arranged, it may directly affect the security of the equipment receiving the information, making these malicious crawlers have nowhere to hide.

It sounds simple, but this turbulent flow algorithm is not simple. It contains many underlying neural networks and deep learning algorithms. For example, it almost uses recurrent neural networks, generative confrontation networks, deep contraction networks, and various regressions at the same time. .

There is also a neural network algorithm derived from the NS equation.

Soon, Ning Wei roughly recorded several parts of the algorithm on the computer.

Then call out the C locale.

It’s not that I don’t want to use python. After all, python is extremely simple compared to C. There are many packages that can be called directly. It’s like a person who has never learned how to cook. meals.

But python can't meet Ningwei's needs, not to mention many parts of the turbulence algorithm are not packaged in python at all.

Moreover, the freshman school taught the C language class, and Ning Wei's grades were not bad.

Of course, this result is good, not at all what Ning Wei is showing now.

For example, pointers and linked lists, which caused him a lot of headaches when he was learning C language, are now as if he has mastered them without a teacher, and he can use them freely.

This is probably growing pains!

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047 Multiple Interests

After Ningwei finished processing the framework of the algorithm and made an important tool kit by himself, it was already late at night, and the three roommates in the dormitory had already fallen asleep, and the slight snoring replaced whispers.

When sleepiness struck, Ning Wei stopped his movements.

It was one thing to have the algorithmic construction already in his head, quite another to want to replicate it exactly.

This is not the same as simply writing a thesis.

It would take at least half a month to get all of them out and turn them into programs that can be used on the computer.Moreover, if this kind of application-level achievement is to be written into a paper, it needs to go through tests or experiments and collect enough data to support it before it can be published, so there is no need to rush this night, the body is the most important thing.

But before going to bed, Ning Wei turned on his phone first, clicked on the comment section of Huo Zhiheng's latest video, thought about it, and then left a sentence: "I am very grateful for the kindness of the call. If there is a chance, there will be rewards." !"

Ning Wei is actually not of the nature of vengeance.

But it was the first time in my life that I was posted on the Internet by human flesh, and I still had some evil fire in my heart.

He also listened to what Dean Kong said to him today.

Although he would lose if he looked at this guy more than once, but as Lao Kong said, seeing the misfortune of the person who offended him made him feel more at ease.

forgive?

nonexistent!

After watching The Three-Body Problem, Cheng Xin was the character Ning Wei hated the most, not one of them.

The reason for my disgust is that no matter what this kind of person does or how many people they harm, they still firmly believe that they are doing the right thing with a selfless and noble heart.So forgive yourself for various reasons.

So when I read this novel and found out that Cheng Xin lived to the end, Ning Wei was bored for several days.

In this sense, seeing the bad luck of the slut makes me feel at ease, maybe I will be enlightened and inspired?

……

Huo Zhiheng saw Ning Wei's comments almost immediately.

This is the charm of the Internet. No matter how far apart two people are, they can let each other know what they think in the first place.

However, Huo Zhiheng, who was heartbroken and lost fans, had no time to talk to Ning Wei.

No matter how awesome he is, Ning Wei is just an undergraduate student in China.

And he had already planned that he would stay in Canada or go to Australia after graduation.

After all, McMaster graduate students are considered high-end talents, and they can get green cards through the introduction of high-end technical talents.

The intersection between the two is probably limited to this confrontation on the video.

Huo Zhiheng didn't care.

What he cares about is that the little influence he finally earned is continuing to lose.

To please those brainless fans means to offend many fans who are still sane.

The recent worries have not been resolved, how can I care about Ning Wei's yin and yang comments?

……

Beijing, Yanbei University, the International Mathematics Research Center by Weiming Lake.

Lu Dongyi was sitting in front of his computer, staring intently at the screen. There were a few blank sheets of paper scattered on the table, which were already filled with various formula derivations.

If Ning Wei is lucky enough to be here, he will most likely be flattered to see what Lu Dongyi is researching.

Because the mathematician is working on his thesis.

In fact, Lu Dongyi had been sitting in his seat for more than five hours, and even asked his colleagues to bring the buns for dinner from the Shaoyuan cafeteria.