Chapter 367 This kind of stealing feeling is so strong On Tuesday and Wednesday, Xu Qingzhou spent most of his time familiarizing himself with the data. This is always the case when you first get involved in a project. Maybe it won't be so troublesome when you actually start doing the calculations. Of course, he also did not miss out on his own work on the local smoothness conjecture. Xu Qingzhou’s current idea is to implement the bilinear oscillation integral estimation technology by normalizing the phase function by transforming ψ^λ(z, η) = φ^λ(z, η). But to be honest, he didn't have much hope for this method. Specifically, this method is the same as the one proposed by the Indian Institute of Advanced Mathematics that was supposed to prove the twin prime conjecture, and it requires a lot of computation. He planned to wait until this part was calculated, and if the situation remained the same, he would directly start verifying the second solution. Moreover, as he came into contact with various different materials, Xu Qingzhou also had some new ideas. When using Holder's inequality, the initial linear estimation means bilinear estimation, which to a certain extent also shows that the implicit relationship in the opposite direction requires careful analysis. From the previous review, he came up with the idea of using orthogonality techniques to transform bilinear terms in the same scale into the standard form that appears in the lemma.
However, Xu Qingzhou was not in a hurry. He still planned to proceed step by step and wait until the second plan was tested. Sometimes that's how inspiration comes. I struggled for a long time but couldn't find it. When I was about to give up, it suddenly became clear. On Wednesday, Xu Qingzhou decisively ended the first plan. Although he was a hacker, he couldn't be too stubborn. Thursday. The weather was very good, the sun was high in the sky, and the sunlight fell on the road, and the shadows of the bare branches on both sides of the road were intertwined and swaying in the breeze. The weather was good and people were in a good mood. Song Yao walked briskly and turned to look at Xu Qingzhou, who had a relaxed expression: "But are you sure you don't want to try again?" "Well, I give up. It's a dead end if I continue to calculate." Xu Qingzhou shrugged, and calculated it again this morning without giving up, and found that it really didn't work. “There comes a time when you give up.” Seeing that they were almost at the Sutra Academy, Song Yao let go of Xu Qingzhou's hand. She always had a feeling that this guy knew everything. “This is called being able to advance and retreat freely, and being able to be rough or delicate.” bang~ Someone got hit hard. Song Yao glared at Xu Qingzhou. This guy was just an old pervert who could drive on any crappy road. "Oh, it's obviously someone's own thoughts." Xu Qingzhou muttered softly, but the remaining words were suppressed in his throat by Song Yao's killing look. We have arrived at the entrance of the seminary. Song Yao clenched her fist and warned, "When you get to the office, be serious. If you do it again like last time." Haha, sometimes she’s Teacher Song, and sometimes she’s Junior Sister.
You really think you are role playing. "Wow, Mr. Song still has idol baggage? Why don't we see it normally?" It was not until Thursday morning that Xu Qingzhou and Song Yao went to the office and officially began to participate in the calculations. In the office, everyone has their own responsibilities. Li Daiyue is responsible for coordinating the overall work and the driving force analysis. Song Yao follows suit and uses econometric methods such as regression analysis and cointegration analysis to quantify the impact of various driving forces on Xia's trade with the United States. Professor Ke Chen is responsible for time series accounting, such as time series analysis and optimization analysis. For the current calculation part, Xu Qingzhou needs to work with Professor Ke Chen. Separate meeting room. Professor Ke Chen wrote the docking content on the whiteboard. "After discussion, the research team decided to use the TRAMO/SEATS method. These methods can help us separate seasonal factors from time series data and obtain adjusted data." "Long before we started, we had already cleaned the data and corrected the missing values, outliers or inconsistencies in the inspection data." Professor Ke Chen talked most of the time, and Xu Qingzhou asked a small question from time to time. Since he had agreed to help, he could not be perfunctory. He had to first determine the needs of the research team, or the effect he wanted to achieve. "That's the content of the project, Mr. Xu. The ultimate goal is to control the prediction error of the ARIMA model to ±." The ARIMA model, which is the autoregressive integrated moving average model, is used for time series prediction and analysis. "No problem." Xu Qingzhou nodded slightly. Professor Ke Chen said with a smile: "We are very confident. You know, the models made by the leading teams currently have an error of around ." "It doesn't look difficult." Xu Qingzhou was already thinking about where to start. "." Professor Ke Chen sighed in his heart, are all of you who study mathematics so confident? Xu Qingzhou saw Professor Ke Chen's strange expression, paused, and said, "I will try my best to minimize the error." "Okay." Professor Ke Chen nodded. After all, Xu Qingzhou was definitely better at math than them, the half-baked ones. An error of was the most ideal state. Even if it was a little higher, as long as it was within , it was not unacceptable. This meeting will last for an hour and a half. Xu Qingzhou didn't go back, but stayed at his workstation. He is very clear about his job content, which is to model time series data to capture its inherent laws and trends, and to use signal extraction technology to separate seasonal factors from time series to eliminate their impact on time series. Finally, it is necessary to combine multiple time series data to conduct multivariate analysis and modeling to capture the interactions and relationships between different variables. Everything is very clear. The reason I came here is that I feel that there are not many opportunities to be in the same office with School Beauty Song. office. Han Shiyi was discussing the afternoon's work arrangements with her colleagues, while everyone else was concentrating on their own work. On this side, Xu Qingzhou glanced at Song Yao who was writing something seriously, and whispered: "Student Song, I have a question." Song Yao stood up, still with a cold expression, and walked over. Xu Qingzhou didn't care about that, and used his dog paw to pull Song Yao's little hand.
There happened to be a file tray on the desk, just blocking everyone else's view. Song Yao struggled a few times, but Xu Qingzhou held her tightly. She didn't want to move too much so that others would notice, so she could only stare with wide eyes. However, Xu Qingzhou looked calm and composed. He pointed at the computer screen and said with a smile, "What does this place mean?" Song Yao took a deep breath and tried to calm herself down so that she could explain to Xu Qingzhou, but her heart was pounding. "This part involves the theory of international production eclecticism, which roughly means that it advocates unified international economic activities based on the increasing consistency of international trade and international investment behavior after the war." Pulling and tugging in the office is so perverted, and it gives me a weird feeling of stealing. But strangely, this feeling of stealing makes people Just a little bit excited? As she spoke, she secretly looked up and saw that everyone else was busy with their own things, and she secretly breathed a sigh of relief. "Oh, so that's how it is." Xu Qingzhou suddenly realized something and pointed to another place, "What about this concept?" Xu Qingzhou's expression was exaggerated. He must be aware of these concepts and just wanted to take advantage. Song Yao looked at her boyfriend and understood immediately, but she was helpless. She couldn't just start a fight here, or she would appear violent. She could only suppress her anger and said, "This is the marginal benefit." Xu Qingzhou was pretending, of course. He thought happily, "Teacher Song's expression of forced endurance is still so touching." On this side, Han Shiyi was talking while glancing in the direction of Xu Qingzhou and the other person. Their hands It’s delicious. Han Shiyi felt a little excited again. (End of this chapter)