Chapter 329 (1/2)
Chapter 332
when Cheng Nuo was about to submit his paper on HowNet, he stopped moving his mouse.
Because, at that moment, he suddenly realized a problem.
His modeling paper Not perfect!
To be exact, it is his mathematical model of ”splicing and restoration of shredded paper”, which is not perfect.
Of course, the mathematical model that Cheng Nuo built is enough to solve the three problems given in the problem, but it makes 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 transversely or longitudinally.
It's really Too idealistic!
As we all know, when a complete piece of paper is torn, the way of cutting can't be only transverse cutting and longitudinal cutting.
It is not to say that when the criminals tear up the paper enough to be used as material evidence in court, they will take a ruler and tear it in a straight direction.
The tangential texture of the shredded paper must be very complex and diverse, not to say very few, but simply impossible to have a completely straight tangential texture.
Moreover, in reality, the pieces of paper that make up a piece of paper are not complete, missing and damaged are common things.
In short, the situation given in the title is too ideal and absolute, which is an impossible situation in practical operation. Even if the problem is solved, it can hardly promote the recovery of fragments of paper in the process of judicial material evidence.
If only to deal with this topic, this modeling competition, Cheng can now submit this paper.
Other dare not say, won a national first prize, Cheng Nuo thinks is still stable.
But Cheng Nuo obviously would not.
Because it doesn't make sense.
Cheng will not allow himself to submit an unsatisfied answer sheet.
Especially On the premise that they have the ability to write satisfactory answers.
Cheng Nuo is not a hesitant person.
Although this may overturn more than half of the work he has done in the past eight hours, Cheng Nuo has no regrets.
Mathematics work is like this, no one can guarantee that their research direction will always be correct. Even Cheng Nuo can't guarantee it.
In order to find a general method to reduce shredded paper.
This is what Cheng Nuo needs to do at the moment.
However, the previous discussion only exists in the case of cross cutting and longitudinal cutting, and the paper fragments are not missing, which can only be discussed as a special case in a special case.
First of all, the first step is to construct the algorithm.
However, this algorithm will be more complex and obscure.
As for the recovery method of shredded paper, Cheng Nuo plans to use three ways to reduce the error rate as low as possible, including the comparison of section texture, the stitching of written font and the information content into the frame.
In addition, considering the missing and fuzzy handwriting, Cheng constructed another more complex algorithm to solve this problem.
Cheng Nuo lowered his head and carefully listed the formula:
[ Construction matrix AI (m * n), AI (m * n) = [a11, a212 ]
the number of characteristic groups X1 = 4.25, X2 = 8.02, X3 = 4.20 】
…………
Dusk is getting into night.
Ten o'clock in the evening.
Seventy two hours of competition, in the blink of an eye, has been 14 hours.
Under the dim light of the computer room, almost half of the people are working on the table.
In fact, it is not so easy to participate in the modeling contest. In addition to the abnormal guy like Cheng Nuo, normal students almost have to be prepared to explode liver if they want to complete a modeling paper in 72 hours.
For the whole three days, if you want to get a good result, I'm afraid the real sleep time can't be guaranteed even 10 hours.
”So late, you two go back first.” Cheng Nuo knocked down a string of codes on the computer, looked up at the dark sky outside, and said to the two women behind him.