Enter the Immortal Cultivation

How to predict the movement of a pedestrian? Or, can this process be predicted?

Most people will answer "feasible" at the first time. Because most people will go directly to their destination.

It's just a straight line!

But is it really that simple?

No.

Because there are always more than one pedestrian on the street.

Pedestrians will automatically avoid others, and every action of each pedestrian will have a certain impact on others around them.

In addition, humans will unconsciously tend to people in the same direction as themselves. This tendency is also very small, and two people will not get too close. However, this is a subtle existence.

In addition, the time it takes for each person to realize the approach of others and react to avoidance is not certain.

The speed of pedestrians is not certain.

At every moment, the size and direction of the impact of each person's movement on the people around them are different, and the overall size and direction can change at any time. There are too many uncertain quantities and too many uncertain factors. On a macro level, these effects will offset each other and form a huge "crowd".

Just like Brownian motion.

Brownian motion is also called Wiener process in mathematics, which is a random process. Independent increments and normal entropy make the mathematical expectation of this process always zero. This is an absolutely random and absolutely irreversible process.

However...

"Fortunately, it is not a Wiener process in general." Wang Qi stared at the repetitive effects. He thought: "Pedestrians always have a destination... The basis for pedestrians to choose a path is either biological instinct or subjective favorable expectations."

At least it is not absolutely random.

At least the mathematical expectation is not absolutely zero.

Very good, as long as there is a glimmer of possibility.

Under Wang Qi's command, thousands of mechanical birds scattered, focusing on tracking some people who appeared repeatedly before and after the murderer committed the crime. There are also singularities that do not completely match the general direction of the crowd.

This is a part of Wang Qi's mind.

His mind. Standing on the Shenjing Road that has been cellular automatized, observing and calculating.

For Jarvis, the cellular automaton of pedestrian flow in a city is too burdensome. He did not hesitate to follow the Wanxian Fantasy and occupied part of the idle computing power of the Wanxian True Mirror.

In simple terms, it is... hacking.

Such an obvious act of seeking death could not be hidden from Feng Luoyi. But Wang Qi also knew that although the Wanxian Fantasy Realm was awesome and had a lot of idle computing power, all the research institutions in Shenzhou were counting on this idle computing power. Countless research data were running on it. He really didn't know how long he would have to wait in line to apply.

Fortunately, he was now considered a small privileged class. On the day he occupied the computing power of the Wanxian True Mirror, he received a message from Feng Luoyi. Feng Luoyi scolded him severely in his heart, and then Wang Qi had to charge twice the normal standard for using the idle computing power of the Wanxian True Mirror this time.

Twice, Wang Qi felt that this amount in exchange for time was not a loss.

And his other thread's mind was calculating the possible path of action of the murderer in a location that could not be seen by the surveillance.

Except for the time determined by the time of the crime, "the murderer must be here at a certain time period". There were no known conditions.

Where would he meet the victim?

What rules would he move according to?

At what time would he leave the main road within the surveillance range and walk into an alley?

I don't know anything.

But one thing is certain.

This guy usually commits crimes at night, killing people on the road in broad daylight. In addition, his motive for committing crimes is unclear, but since it is a random hunting, it will definitely take a little time to identify the victim.

This time cannot be too long, because he needs to hide very well.

"All the guys in Shenjing who have irregular lives and are idle are being watched by the Department of Justice." Wang Qi's other mind was flipping through the investigation results of the Shenjing Criminal Law Department: "He may take some time every day to take a walk and commit crimes while walking. Or on the way to work or on the way home."

"He can't collect information about ruffians in a big way. Haha, if there is such a person. Always wanting people to inquire about the ruffians, the people he inquired about will definitely disappear... This legend will definitely be more popular than the murderer himself."

"He shouldn't be the one who is always bullied... Nima has the ability to kill people but is bullied, this is not a country of violence. It is not the Earth with extremely powerful force, but Shenzhou, a world with powerful personal force! "

"He has the potential to attract those ruffians... Show off money, pretend to be stupid and rich, or beauty? "

"When you meet him, kill him and vent your desire. "

"He has a limited time to wander, and his speed will not be very fast. He will pass by the main road and then attract these local ruffians in the alleys. "

"Since there is no chance of killing more than one at a time, it can be inferred that after killing, he will follow a certain road back to the main road and return to his peaceful life. "

Combined with the analysis of the Shenjing Criminal Law Department, Wang Qi made such a judgment.

Study the activity patterns of ruffians, infer under what circumstances these two individuals will meet at this specific location, and then find out which intersections he may pass by.

Even if there are thirty cases, thirty different results can be obtained. However, it is useless to compare thirty groups of different suspects and focus on selecting the repeated ones.

Because the number is too large.

However, Wang Qi did not expect to find the final solution in this way. Moreover, it is difficult to believe such a thing that has no evidence and is purely calculated by mathematical calculation.

But it doesn't matter.

"The time from the time this perverted murderer left home to the crime scene is within a certain value."

"This time cannot be too long, but it will not be too short. And he will go out at this time every day."

"Otherwise, the guy who only had an abnormal record of going out on the day of the crime should have been caught by the Shenjing Criminal Law Department long ago."

"According to the pattern of pedestrian flow, calculate the route this guy may have passed."

"Plus the possibility that he wandered in the non-monitored area..."

"The two add up to a route map full of possibilities."

The convergence point of this route map is the place where the guy must pass.

Although there may be many "must-have places". But...

"I feel that I am very close to you, asshole..." Wang Qi directed the thread of the flesh to tap the table lightly with his fingers, playing with a special memory in his hand.

This is Wang Qi's last idle thread. The remaining 40 or so threads are all eagerly reading relevant literature, papers, and academic monographs. I hope to give myself a little inspiration.

"The rest is just a matter of time..." Wang Qi whispered to himself: "I have to prepare a suitable piece of equipment." (To be continued ~^~)