Chapter 477: Xu Qingzhou: You Slander Someone's Innocence Out of Thin Air

Outside the window, night had completely fallen, the city lights were all on, and looking into the distance, various neon lights were intertwined, fully displaying the prosperity of a modern metropolis.

Song Yao put down her pen, stepped into her slippers, walked over, and stuffed her feet into Xu Qingzhou's arms, "What don't you understand?"

"Sparse prior distribution, after using the Laplace prior, but how to reduce the parameter dimension."

Xu Qingzhou's fingertips slid over her beautifully lined calves; he had been busy during this time and hadn't had time to properly touch these long legs.

"You asked this question last time."

Song Yao reminded him.

Confirmed, this person is just taking advantage under the guise of seeking knowledge.

"Asked? Sigh~ I'm getting old, my memory is bad, change one, change one, that is the factor library construction, how to extract independent influence factors."

Xu Qingzhou didn't change his expression.

Song Yao thought for a while and said: "First, perform Z-score standardization on the original factors to eliminate dimensional differences, and then perform covariance matrix calculation..."

The establishment of a factor library is an important part of quantitative model development in hedge fund quant, so it seems this guy had long seen that she would choose to continue researching hedge fund quant issues.

Xu Qingzhou listened, nodding from time to time, with half his attention on Song Yao's explanation and half on her legs.

Slender and round.

Full of resilience.

Easily able to do a split.

Fair and delicate, tender, his fingers left a red mark with just a little force.

Really good.

"The third part, check whether there is a lead-lag relationship between principal components, and eliminate those with causal relationships..."

Song Yao's voice stopped abruptly; she found Xu Qingzhou staring at her legs, and he even swallowed his saliva.

This reminded her of some perverted things this guy had done before.

A trace of nervousness appeared on the school beauty's little face.

Xu Qingzhou only now noticed Song Yao had stopped talking and looked up: "Continue."

Song Yao's feet moved uneasily, her lips moved, and she said: "If you dare to kiss, I'll kick you down."

"Song Yao... you slander someone's innocence out of thin air!"

"Last time you..."

"Last time was an accident!"

Xu Qingzhou's expression stiffened, but he quickly recovered his composure and said righteously: "I'm not a pervert, why would I always kiss your feet... *cough*, that, just now where were you talking to?"

Song Yao curled her lips; he clearly wanted to kiss.

"Eliminate factors with causal relationships. For example, if 'value factor' Granger-causes 'quality factor', then merge the two... can't you pinch lighter!"

"Oh, okay."

Just as the two young people were fishing for each other in the apartment, the MIT forum became lively because of a recruitment notice from Xu Qingzhou.

In a student apartment by the Charles River.

Dave Rost was aimlessly wandering on MIT's official recruitment platform, Handshake.

Two months after his PhD graduation, he still hadn't found a suitable research group.

"Wait."

Rost suddenly froze, his eyes fixed on the screen.

Xu Qingzhou!

Rost looked at this name, his breathing suddenly becoming a bit rapid; a double big shot of the Fields Medal and the Wolf Prize, there is no one in the mathematical world who doesn't know him now.

But when such a big shot builds a team, they usually invite people directly in the circle and wouldn't recruit publicly on such a platform, so he even doubted his eyes were playing tricks on him.

"It really is him!"

Rost restrained his excitement, not daring to waste time, and quickly looked at the requirements. The spots in such a big shot's research group were absolutely super popular; the sooner he finished reading and sent his resume, the sooner he would have a chance.

However, when he finished reading the first sentence, he froze again.

"What the hell?"

【Recruitment Position.

Postdoctoral Researcher.

Research Direction: 1. Math-Experiment Collaborative Optimization of Superconducting Thin Film Growth. 2. Topological Analysis of Thin Film Defects and Cross-Scale Performance Prediction.】

Dave Rost's enthusiasm was doused with a bucket of cold water.

Condensed matter?

Not only condensed matter, but also involving materials science...

Isn't Xu Qingzhou a math professor? Why did he run off to do condensed matter?

Dave Rost, with doubts, entered MIT's official website where the project announcement was posted, and soon found the project approval notice that had only finished the procedure and been announced yesterday.

"Is this brother crazy?"

It wasn't even a school-level project, and the school only provided equipment, with Xu Qingzhou personally bearing all the project's expenses, which meant no school subsidies, no school funding...

In terms of job requirements, Xu Qingzhou was relatively broad; applied mathematics, materials science, condensed matter, or related fields were all fine.

Salary and benefits.

Base annual salary 65,000.

The rest of the income was just project bonuses, but in the eyes of others, this was completely a naked "big pie" (empty promise).

MIT OpenCourseWare (OCW) discussion area.

This is one of MIT's largest discussion areas, where 80% of students find study groups and share information about major projects through the OCW forum.

"Hi, Xu Qingzhou is preparing to do a new project."

"Are geniuses' ideas always so unique?"

"Damn, I've already rejected two project invitations, specifically waiting for half a month, just to see if I could get into Xu Qingzhou's research group... but, why is it condensed matter?"

"If anyone joins this project... then they must be at their wit's end."

"Appraisal complete: A big pit project."

"The physics department's James team is also doing this project. Compared to that, Xu Qingzhou's project has almost no possibility of producing results."

"The MIT Investment Club has new material again; if nothing goes wrong, this project will definitely be on the list at the annual simulated investment meeting."

The MIT Investment Club holds a simulated investment meeting at the end of the year to vote for the "most unreliable" project.

"Why doesn't he choose what he's best at, mathematics!"

"That's right, if it were mathematics, his project would definitely be one of the most popular projects at MIT."

"Just won the Fields Medal, has he already been blinded by victory?"

Xu Qingzhou's recruitment notice stunned everyone, making him famous at MIT.

Although this reputation wasn't very good.

Many people were very interested in Xu Qingzhou's research, especially after he proved the Riemann hypothesis and won the Fields Medal, but after seeing the project, they could be said to be greatly disappointed.

Xu Qingzhou didn't care about the criticism on the forum; with thousands of people at MIT, there would always be one or two blind... no, people with vision.

The worst case was not being able to recruit anyone.

If it really came to that, at worst he would do it himself, or change the project.

Early the next morning, he went straight to the library.

The recruitment information had been sent out, and the next work was still a thousand threads.

Project approval and technical route design.

Technical path: Mathematical modeling (phase-field simulation/stochastic dynamics) -> intermediate layer material screening (first-principles calculation) -> experimental process development (MBE/sputtering) -> in-situ characterization (STM/XPS) -> performance verification (microwave resonance testing).

Establish theoretical models and simulation verification, and at the same time, need to build an experimental system.

The content that needs to be sorted out is still quite complex.

(End of chapter) ===== CHAPTER 478 =====