novelraw Chapter 315 Data Analysis
Chapter 315 Data Analysis
found it?
Walk!
In the conference room, Ren Hongfeng's subordinates brought back two videos.
Team Chen. Turning on the computer, Ren Hongfeng asked his detectives to project the found video onto the screen.
This is a video provided by the residents of Unit 101, Building 1, Building 1, Wanbao Community, when we visited and investigated the residents of the community.
Because there is no surveillance in the community, and their house is on the first floor, a miniature camera was specially installed to prevent theft. The lens is facing the gate of a unit... Look, this is a video taken on April 3.
The video plays.
The time is 12:28 p.m.
It was dark, but with the faint light at the door of the unit, people could still be seen clearly in the surveillance.
A tall, tall white man with blond hair crosses the camera.
The video is very short, and the man appears in the camera for only two seconds.
Moreover, the man under surveillance has only half of his face and is wearing a mask.
In the five days after the incident, this was the only foreigner who was present at the crime scene.
Ren Hongfeng opened another folder: This is a picture taken by a speed camera on the road in front of the Wanbao Family Courtyard.
April 3 at 12:23 p.m.
On the projection is a photo.
A speed test photo of a taxi.
Team Leader Chen, look at the position of the co-pilot.
The pictures taken by the speed cameras are very clear.
The yellow-haired man, wearing a mask, and the camera installed in Room 101, Unit 1, Building 1, Evening News Family Courtyard, captured the white man alone.
In the market, there are not many foreigners, especially Caucasians.
Although there is no evidence to directly prove that this yellow-haired Caucasian man wearing a mask is a foreigner who entered the rental room where Qin Liansheng died, but this video and photos are enough.
The appearance of the Caucasian in the video is very obvious. We need to find this person in the shortest possible time.
Chen Yan knew that this person must be the key to uncovering the mystery of the case: Check this taxi, it has not been three days since the 3rd, the driver must have an impression of foreign passengers.
If the other party pays the taxi fare through WeChat, contact the technical department and you will be able to find the person's information.
Captain Qingshan, you are responsible for this matter.
Also, we need to sort out the background investigations of Cui Xiaobing and Qin Liansheng again.
I want all the information about these two people, family members, bank accounts, relatives and friends, etc.
Lan Feng, you are responsible for this matter.
Turning his head, Chen Yan looked at Ren Hongfeng: Captain Ren, how is the investigation on the trajectories of Qin Liansheng and Cui Xiaobing delivering food?
Still investigating,
Should have results tonight.
it is good!
Now Chen Yan has two clues.
First, a white man with yellow hair and a mask
Why did this person go to Qin Liansheng's rented house, and look through the bedrooms of Qin Liansheng and Cui Xiaobing.
How could two ordinary people who work as takeaways get involved with a foreigner like him.
The most important thing is that the other party showed that he knew about Qin Liansheng's death.
However, this case was not publicly reported. Even if the neighbors knew about the death, it was only circulated in a few nearby communities.
How did the yellow-haired foreigner know?
The second is Cui Xiaobing who has been imprisoned.
However, now is obviously not the time to interrogate Cui Xiaobing again, because Chen Yan has too little information.
When facing Cui Xiaobing, this kind of poor information will make the interrogation meaningless.
Because you don't even know what the other party is going to do.
After the work was arranged, each group began to investigate overnight.
In the early morning of the next day, the detectives arranged by Ren Hongfeng brought back good news.
Team Leader Chen, Qin Liansheng and Cui Xiaobing have checked all the takeaway orders they have run in the past few years.
We also found all of their job trajectories.
Chen Yan, who hadn't slept all night, was shocked.
Why check the work trajectory of two people?
Because Chen Yan didn't believe that Qin Liansheng and Cui Xiaobing were really just ordinary delivery people.
What deliveryman's home will be clean and spotless?
Don't talk about others, Chen Yan can't do it himself.
So, can a person with such good self-discipline be just a delivery man?
Turn on the computer, connect to the projector, and two forms appear.
This is all the takeaway orders they have taken over the past five years.
Five years, such a long time span, there are tens of thousands of data in the two tables.
Open another folder, which is the trajectory of the two people's actions.
This is the trajectory of the two people when they were picking up the delivery order obtained by the technical department of the Panshi Police Team contacting the food delivery platform.
This trajectory data is not complete. The data from three years ago has not been archived, and the trajectory data from the past two years is only part of it.
On the screen, there were dense screenshots, which dazzled everyone.
Everyone, looking at the messy things on the projection screen, was a little puzzled.
Team Leader Chen, these data... are the work of ordinary delivery people.
Everyone is pretty much the same, right?
Chen Yan nodded, these data are indeed ordinary flow data.
However, if there are unknown stories behind the two people, then it is impossible for them to really deliver food.
Of course, it cannot be analyzed from the current data.
Leave the data to me. Chen Yan put away the data hard drive and looked at Ren Hongfeng: Captain Ren, please give me a separate office and a computer.
This is no problem, Ren Hongfeng nodded affirmatively: There is an empty office next door to me, and the computers in it are also newly configured.
...
Locking himself in the office, Chen Yan began to face the data.
When investigating the case of the US-Japan International Hospital, the system once rewarded Chen Yan with a skill.
Specialization in computer programming.
For a long time, Chen Yan basically didn't use this skill much in the cases he encountered.
Today, it finally came in handy.
Part of the trajectory data, as well as the information in the table, all the data volume is tens of thousands.
Just looking at and analyzing it with the naked eye cannot discover the hidden laws at all.
What Chen Yan has to do now is to analyze from these messy data whether Qin Liansheng and Cui Xiaobing have any fixed takeaway customer group in the past five years.
If so, by whom, what did they buy, and where did they buy it.
The industry of delivery staff is hard work.
But when it comes to salary, it’s actually not that low.
This is an industry where as long as you work hard, your income can reach the upper-middle level.
However, the wear and tear on the body is relatively large, and it is difficult for ordinary people to adapt to the high-intensity delivery work for a long time.
But Qin Liansheng and Cui Xiaobing have worked together for five years.
Of course, Qin Liansheng lasted longer.
So, there is a doubt here, did Qin Liansheng and Cui Xiaobing never think about changing careers?
You can't do takeout for the rest of your life.
The sound of typing on the keyboard was connected together, and Chen Yan was writing a program by himself to analyze the data.
The first is to classify all the takeaway dishes of the two people in the past five years.
Then connect the origin and destination of the takeaway orders, and combine the existing action trajectories of the two people to simulate all their takeaway order trajectories.
In this way, it is clear where the two have been, which takeaway shop they took business from, and who they gave the things to in the end.
But even with the computer program specialization skills that the system rewards, it will take time.
After all, the amount of data processed is too large.
While Chen Yan was processing and analyzing the data, Liu Qingshan, Lan Feng and others were also working non-stop.
At three o'clock in the afternoon, Liu Qingshan returned first.
At four o'clock in the afternoon, Lan Feng also returned to the disk market detective team.
All the information gathered together.