universal data

Chapter 329 I, I, Don't Like Imperfections!
332 chapter

Just as Cheng Nuo was about to upload and submit his thesis on HowNet, he suddenly stopped moving his mouse.

Because, at that moment, he suddenly realized a problem.

This modeling paper of his...isn't perfect!
To be precise, the mathematical model he constructed on the "reconstruction of shredded paper" has not reached a perfect level.

Of course, the mathematical model Cheng Nuo built was enough to solve the three problems given in the title, but it made Cheng Nuo frown even more.

You should know that the three questions in question B are all discussions under the condition that the shredded paper is cut horizontally or vertically.

It's really...too idealistic!
As we all know, when a complete piece of paper is torn, the way of shredding cannot be only two kinds of cross cutting and vertical cutting.

Nor would it be said that when criminals shred paper that was sufficient to be used as physical evidence in court, they would tear it up in a straight direction with a ruler.

The tangential texture of its shredded paper must be very complex and diverse, not to say that there are few, but it is impossible to have a completely straight tangential texture.

Moreover, in reality, the scraps of paper that make up a piece of paper are not complete, missing and damaged are common occurrences.

To put it simply, the situation given in the title is too ideal and absolute. It is a situation that cannot occur in actual operation. Even if the problem is solved, it is almost impossible to recover the shredded paper in the actual judicial evidence process. to any impetus.

If he was just dealing with this topic, Cheng Nuo could submit the paper in front of him now for this modeling competition.

I don't dare to say anything else, Cheng Nuo thinks it's safe to get a national first award.

But Cheng Nuo obviously wouldn't do that.

Because that makes no sense.

Cheng Nuo would not allow himself to submit an unsatisfactory answer sheet.

Especially... on the premise that I have the ability to write a satisfactory answer sheet.

Just do what you think, Cheng Nuo is not a hesitant person.

Although this might overturn most of the work he had done in the previous eight hours, Cheng Nuo didn't have any regrets in his heart.

This is the case with mathematics work, and no one can guarantee that their research direction will always be correct.Even Cheng Nuo couldn't guarantee it.

Looking for a universal way to restore shredded paper.

This is what Cheng Nuo needs to do now.

The situation discussed before only exists in cross-cutting and longitudinal cutting, and the scraps of paper are not missing, and can only be discussed as a special case within a special case.

First of all, the first step is still to construct an algorithm.

However, this time the algorithm will be more complex and obscure.

As for the restoration method of the shredded paper, Cheng Nuo planned to use a combination of three methods: cross-section texture comparison, written font stitching, and information content into the frame, to minimize the error rate as much as possible.

Coupled with the consideration of missing and blurred writing, Cheng Nuo constructed another set of more complex algorithms to solve such problems.

Cheng Nuo lowered his head and listed the calculations meticulously:

[... Construct matrix Ai(m*n), Ai(m*n)=[a11, a212...]
特征组数x1=4.25，x2=8.02，x3=4.20……】

…………

Dusk fades into night.

Ten p.m.

The 72-hour game often, in the blink of an eye, fourteen hours have passed.

Under the dizzy lights in the computer room, almost most of the people were working on the desks.

In fact, it is not that easy to participate in the modeling competition. Except for the perverted guy like Cheng Nuo, normal students who want to finish a modeling paper within 72 hours almost have to be prepared to explode.

For three full days, if you want to get a good result, you may not be able to guarantee even ten hours of sleep.

"It's so late, you two should go back first." Cheng Nuo typed a string of codes on the computer, looked up at the dark sky outside, and said to the two women behind him.

Until now, the two women standing behind Cheng Nuo were yawning again and again.

While yawning, Liu Qing said, "Then God, shall we go back first?"

"Well, let's go." Cheng Nuo nodded with a smile, "By the way, and you two won't be here tomorrow morning."

"Huh?!" Liu Qing was obviously taken aback, and said pitifully, "Master, do you despise our two troubles?"

"That's not what I meant." Cheng Nuo smiled wryly and waved his hands, "What I mean is, I can complete this modeling problem tonight, and I won't come tomorrow. And of course you two don't have to come. .”

After listening to Cheng Nuo's explanation, Liu Qing's small mouth opened slightly, with a faint blush on his face, "Master, you are so fast!"

Cheng Nuo always felt that Liu Qing's words were a little uncomfortable.

Man, how can you say fast!

He laughed and said, "It's not fast, more than ten hours is my normal level."

For more than ten hours, the man who drank the kidney treasure lasted so long!

"God, goodbye!"

"goodbye!"

After seeing off Liu Qing and his daughters, Cheng Nuo turned around and continued typing codes.

clap clap~~
shhhh~~
In the entire computer room, there are only the sound of fingers tapping the keyboard and the sound of the pen tip rubbing against the paper.

……

Late at night, two in the morning.

Finally, Qiu Qi couldn't stand it any longer, stretched his waist, saved what he had written, put on his schoolbag and prepared to go back to the dormitory for a while.

He subconsciously glanced around.

At this point in time, there are not many people who are already busy, only a few here and there.

Qiu Qi caught sight of Cheng Nuo, who was still busy, and muttered to himself, "This guy, although he's one of the two, is he still very hardworking?"

After chuckling, Qiu Qi packed up his things and left.

after an hour……

Cheng Nuo logged into CNKI again and entered the modeling paper submission portal.

This time without any hesitation, he directly pressed the "OK" button.

Submitted successfully!

The version he submitted was, of course, a modified version after one afternoon and one night, a set of mathematical models that could solve the recovery of almost all types of shredded paper.

At this point, his mathematical modeling journey officially came to an end.

When he left, Cheng Nuo took a special look. In the computer room, there were still two or three students who continued to explode their livers, and there was a momentum of a decisive battle until dawn.

"Sure enough, you are young and hardworking!" Cheng Nuo sighed softly.

Cheng Nuo, who didn't need to continue to explode, returned to the dormitory with ease, climbed to the upper bunk, and fell asleep.

…………

The next day, early in the morning.

The modeling team members who had not slept enough walked into the computer room one after another in a daze.

Qiu Qi was no exception. After sleeping for more than three hours, he put essential oil on his eyes to force himself to wake up, and subconsciously glanced in the direction of Cheng Nuo's seat.

"Huh? You haven't come yet. Could it be that you stayed up too late yesterday?" Qiu Qi thought in his heart, bowed his head and continued to work on his own affairs.

By the time he raised his head again, it was already ten o'clock in the morning.

Looking in the direction of Cheng Nuo again, Qiu Qi was filled with doubts when he saw the empty seats.

what's going on?
(End of this chapter)