"Uh...... Heads? ”

Seeing Yuan Lang and another lieutenant colonel standing in front of him, Su Qiyue was stunned.

This lieutenant colonel, he is no stranger.

When I was in the headquarters before, I had a relationship.

Seeing Yuan Lang and the other party walking together at this time, Su Qiyue guessed that the two should have a relationship in private.

Soon, Su Qiyue realized the situation at this time.

He was about to salute the two of them, but was stopped by Yuan Lang.

"They're all old friends, don't be restrained. It's rare to meet you outside so coincidentally, please have a meal! How's it going, are you free? ”

Looking at Yuan Lang's blazing eyes, Su Qiyue was stunned, and then smiled: "Originally, I was not available, but I can't help but give the chief face, so let's be free!" ”

At the end of the award ceremony, Su Qiyue originally made an appointment with his senior sister to study a new topic.

Who knew that the plan was not as good as the change, and the appearance of Yuan Lang made him have to accept it.

……

The fourth canteen of UCAS.

Su Qiyue, Yuan Lang and He Ziming were talking and laughing.

Originally, according to He Ziming's proposal, this meal was to be eaten out.

But Su Qiyue felt that it was a little troublesome to ask the teacher for leave when he left school, so he proposed to treat himself and make a living in the school.

Of course, it is just his modesty to say that he is making up for a living.

In fact, the fourth canteen itself is a small canteen, which is mostly used for small gatherings between students.

"Brother July, I'm really embarrassed to let you break the bank today!"

He Ziming raised his wine glass, touched it with Su Qiyue, and grinned.

"What are these words, where are you too polite!"

Su Qiyue waved his hand and said.

Just now, under Yuan Lang's introduction, Su Qiyue had already learned He Ziming's identity and knew that he was the deputy director of a certain department of the Logistics Department of the H Provincial Military Region.

At this time, it is also the proper meaning to call each other where they are.

After all, everyone eats at the same table, and you can't always call the chief, that's too raw.

Yuan Lang's alcohol consumption is not very good.

Watching the two clink glasses, he watched with a smile on the sidelines.

After the two of them put down their wine glasses, he said to Su Qiyue: "Little brother, I want to thank you for drinking today." ”

"That question you answered at the headquarters gave me a lot of inspiration!"

Of course, Su Qiyue knew what the old Squadron Leader A was talking about, he shook his head with a smile and said, "Captain Yuan, if you can find those 25 forms, you actually already have your own plan." ”

"My answer to your question only strengthened your confidence in carrying out this plan......"

Yuan Lang was not surprised that Su Qiyue could accurately guess his thoughts.

He smiled and nodded, and said, "I don't deny this." However, I would like to ask your opinion on how to develop and plan this simulation training. ”

Su Qiyue didn't shirk anything, so he hummed and said: "Captain Yuan, Lao Mei has this kind of simulation training, the method can be used for reference, as for the content of simulation training, it still has to be based on the actual situation, there is no need to be completely ...... like them."

Yuan Lang answered, and seemed to think of something.

He touched his nose and said, "But if we change the content of the simulation training, then the data we get may not be able to compare with Lao Mei's series of data......

Indeed, the data of those 25 simulation trainings is not easy for Yuan Lang to get.

It is not difficult to understand that he has such concerns.

Hearing his words, Su Qiyue pursed his lips and smiled.

"Captain Yuan, I don't know how you got the data from those 25 simulation trainings. But I took a cursory look at it when I was at the headquarters and felt that it was of little reference value, so you don't have to take it seriously......"

Yuan Lang was stunned when he heard this.

He was a smart man, and of course he heard what Su Qiyue meant.

Obviously, this top student of UCAS is hinting to himself that the data in his hands is not very reliable.

For this, in fact, Yuan Lang had doubts before.

But there was no evidence, and the information was not easy to come by, so he didn't think about it deeply.

At this time, seeing that Su Qiyue gave this suggestion very definitely, of course Yuan Lang had to ask carefully.

He put down his wine glass and looked at Su Qiyue with an inquiring gaze: "Can you make it clearer?" ”

Su Qiyue didn't intend to hide it, but after listening to Yuan Lang's inquiry, he told his judgment.

"Actually, there is no special reason, but when the command saw the data, it found that a large part of it did not conform to the 'Benford's law'. So I judge that these data are likely to be circulated by Lao Mei after tampering. The credibility is not very high......"

"Benford's Law!?"

Hearing this, Yuan Lang and He Ziming were suddenly a little confused.

"Well, a theory to check if the data is fake."

Su Qiyue nodded and explained: "According to this theory, in any pile of random data derived from real life, the probability of the number with 1 as the first number is about 30% of the total, which is close to 3 times the expected value of 1/9 intuitively. ”

"To put it in a formula, that is, in the b-carry system, the probability of the occurrence of a number starting with n is logb(n+1)-logb(n)."

"By extension, in the case of any set of data that occurs randomly, the larger the number, the lower the probability of the number starting with it......"

Speaking of this, Su Qiyue snorted slightly: "Captain Yuan, among the 25 sets of data you released with the projector before, such as somatization, interpersonal sensitivity, depression, anxiety, paranoia, and horror, these numbers are supposed to appear randomly, so they should be in line with Benfu's law." ”

"But after I took a cursory look, the data samples of thousands of soldiers in the 25 sets of data didn't seem to match very well, so I judged that this data may have been tampered with before it was circulated."

"If you follow these data, there may be problems......"

Listening to Su Qiyue's eloquent talk, He Ziming felt that his brain didn't seem to be enough.

On the other hand, although Yuan Lang has also not heard of the extremely relevant theory of "Benford's law".

But his ability to accept is stronger than that of his old comrades-in-arms.

At this time, after such a careful analysis by Su Qiyue, Yuan Lang was quickly relieved.

"It turns out that data simulation can also be used to judge the true and false ......"

Su Qiyue nodded affirmatively, and said with a smile: "Captain Yuan, in fact, if you want to imitate Lao Mei's simulation training method, you only need to know the content of the correlation analysis of her soldiers' PTSD." ”

"As for the specific data, it is more accurate to rebuild the model yourself."

After listening to Su Qiyue's story, Yuan Lang took a deep look at him, and he was really glad in his heart.

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