The data sets in the medical image processing field created by Chen Feng are pitifully small. This is easy to understand. Most of the medical-related data are confidential from major hospitals, and the authors of the papers will not disclose them easily.
That is to say, because Chen Feng's tutor has a project cooperation with Huacheng First People's Hospital, he was able to get some relevant data. But getting the data is only the beginning, and Chen Feng still needs to process the data himself.
Ling Zhi is not so lucky. His research direction is related to public opinion analysis in social media. Specifically, it is to find out the trolls in social networks, that is, different accounts belonging to the same real-world human being.
They post spam comments through multiple accounts to disrupt the order of social networks. Some commercial organizations even hire trolls to post negative comments to attack competitors, which has a very bad impact.
Of course, trolls will not tell you that they are trolls, and most of the data on social networks is very sensitive, and few people specially organize it, so such data sets are difficult to obtain.
Ling Zhi has spent a lot of time on the data set in the past year. The better method he currently uses is to divide the tweets posted by the same person into two parts and pretend that they were posted by two accounts. Although it is not true enough,
But it is enough from an experimental point of view.
Lingzhi does not think that having a data set or not having a data set is better or worse, but Lingzhi believes that as long as you work hard, although you may not succeed, you will definitely gain something.
Therefore, although Lingzhi made slow progress in scientific research, the process of collecting social network data allowed him to master multiple skills such as data collection, data analysis, and data preprocessing.
Although he is not yet an expert in the field of data processing, he has accumulated a wealth of experience.
"Well, having said that, it's still painful inside, brother. I think the effect is almost there, but my director won't let me go."
"That's unlucky for you, but since you're not satisfied, the only thing we can do now is work harder on data processing."
"That's all I can do. I'll go back and pick through the data again to see if there's anything dirty."
"Then try your best and let me know if you need help."
"Okay, no problem. I'll go now, bye."
"Bye-Bye."
Chen Feng went to the fifth floor of the college building, and Ling Zhi's laboratory was on the second floor, so Chen Feng took the elevator up, while Ling Zhi drove directly to Route 11 and took the stairs.
It was still early, and only one person came to the laboratory, senior brother Zhou Min.
Brother Zhou Min is one year older than me and is expected to graduate next year. His research direction is the old field of his mentor Wang Haibo, multi-objective vehicle route optimization problem.
Lao Wang has been deeply involved in this field for many years and has published many papers. His disciples have also led many classes, and they all started in this direction at the beginning. But starting from the class of Senior Brother Zhou Min, Lao Wang suddenly woke up and wanted to lead some
Students pioneered other research fields, which led to Lingzhi’s current research direction.
Ling Zhi didn't think there was anything wrong with it. Being in Lao Wang's field doesn't necessarily mean everything is easy. Every experiment you do if the details are not in place may be met by Director Wang's sharp eyes. Although there are difficulties in opening up wasteland, the advantages are
You can learn more new knowledge and have a certain degree of freedom.
Having a degree of freedom does not mean that you can fabricate experimental results at will. This is academic fraud, and Lexus will not do this kind of thing. What it actually means is the amount of data you collect, the extent of processing, the parameter settings of the code, etc.
And when you use the data set you collected and the code you wrote to run a good experimental result, no matter how simple the experiment is, you will have an unparalleled sense of accomplishment.
So Lexus is very satisfied with his current situation.
"Good morning, senior brother Zhou Min."
"morning."
While talking, the senior brother yawned greatly. Lingzhi didn't care, sat down in his seat, turned on the computer, and prepared to print out an article related to word vectors and take a closer look.
The laboratory is equipped with a special printer. After Lingzhi copied the paper, he took it to the computer next to the printer and plugged it in. However, after a long time, the disk could not be read out.
"No, it's probably not my USB flash drive that's broken."
Lexus doesn't know what's wrong.
"Brother, is the computer next to the printer broken? Why can't I read my USB flash drive?"
Ling Zhi asked.
"Oh, that one, I just wanted to print, but I couldn't read the disk. I guess it's stuck."
"Oh, that's it, then why not restart it?"
"Because I remembered that your senior sister, Xiaoxin, said that she was running a multi-threaded program and needed to use the CPU of a computer that is usually idle in our laboratory and is not used much for calculations. I guess she must have used that computer. Wait for your senior sister
I'll ask her when she comes."
"Oh, no wonder."
Lexus held down "ctrlshiftesc" on the keyboard and wanted to open the task manager to see the resource usage. As a result, the computer was stuck and even the task manager could not be opened.
Ling Zhi sighed, it's too difficult for senior sister to run a program, and multi-threaded programs are so stuck.
After silently mourning for his senior sister, Ling Zhi returned to his seat and prepared to read the paper on the computer. Although it hurt his eyes a little, the problem was not too big.
After a while, Lingzhi probably grasped the core idea of the paper. So he created a ppt document and prepared to make a ppt. The group will share this paper tomorrow.
At this time, some people had already come to the laboratory. Ling Zhi also wanted to take a break and get a glass of water. At this time, Senior Sister Xiaoxin just came over.
"Hey, Xiaoxin, did you run a program on the printer's computer? That computer is so stuck that we can't print anything. Why don't you see how the program runs?"
The senior sister's name is Zhang Xiaoxin, and she and senior brother Zhou Min are doing the same research direction.
"Ah! I'm sorry, I'm sorry. Is everything stuck like this? I'll go check it out right away."
The senior sister did not go to the printer's computer to check. Instead, she sat in her seat and used ssh remote commands to try to connect to the printer's computer. As a result, she could not connect to the printer's computer for a long time.
"It's over. I'm completely in a panic."
Senior Sister Xiaoxin sighed. The so-called crash means crash.
The senior sister reluctantly restarted the computer that used the printer.
"Alas, the program ran in vain again."
"I told you to optimize the code earlier, please don't do it violently..."
Senior Brother Zhou Min started to put forward suggestions at the right time, and Ling Zhi was also happy to see the results. He didn't understand the direction that his senior brothers and sisters were taking, so he didn't interrupt and just poured water on his own.
"By the way, did Lao Wang come to the laboratory today?"
"I heard him say yesterday that he had something to do today, and he should be at the team meeting tomorrow."
If Lao Wang doesn't come, it will be relatively easy. Although whether he comes or not, my plans for today will not change, but at least there won't be anything extra to disturb me.
He basically spent the whole day doing ppt, and took some time to run a simple neural network program that he had built a long time ago to see how it performed on the data set he processed. "It's still the same bad thing.
."
The matching accuracy rate of the navy account is only 37%, which is meaningless. In existing papers, it must be at least 80% to be considered a good result.
"Oh, compared to Chen Feng, my place is not much better. Forget it, take your time, we will talk about it tomorrow, go back."
Ling Zhi felt that he was different. Other graduate students worked from nine to eleven, but he stayed alone in the dormitory at night to do his own things. Ling Zhi felt a little guilty at first, but as time went by, he found reasons for himself.
"Go back and rest your eyes. Do you feel tired after looking at the computer for a day?"
Although it was a boring excuse, he felt that it was not a waste of time but that he spent time reading paper books every night and occasionally went to the ball room to practice.
Especially when I'm studying, whenever my experiments don't go well during the day, reading for a while at night will always calm me down.
The characters in the book each have their own joys, sorrows, and joys. Ling Zhi understood the moods of the protagonists, and his own little emotions were insignificant.
"How did the experiment go?"
Ling Zhi came to the laboratory where Chen Feng was.
"Oh, don't mention it. Sifting through the data makes my eyes dazzled. Lingzi, can you help me when you have time? I really can't do it anymore."
"Okay, you can send me the data tonight and I will take the time to help you sift through it."
"Okay, let's walk around, eat, eat, I'm starving."
The two walked to the canteen, not chatting much along the way. Occasionally Chen Feng spoke, but Ling Zhi didn't answer, and Chen Feng didn't take it seriously. This was also an important reason why Ling Zhi felt more comfortable getting along with Chen Feng.
Ling Zhi's lack of talking has always been a worry for Ling Zhi, but there is a person around you who talks a lot who is willing to be with you and doesn't care about your lack of talking. Ling Zhi feels that he should cherish such a person.
Even though Chen Feng often makes fun of himself, he has no malice and understands the existence of a strange person like himself. Ling Zhi feels that he is very lucky.
It's just that this was what he was thinking, and he couldn't say it to Chen Feng, otherwise it would only lead to more intense ridicule.
"What do you want to eat today? Lingzi."
"I'll just order a rice bowl with egg and meat slices. It's simple and the rice is enough."
"Then let me order eggplant and beans. I want to eat some eggplant, but yours is too bland. You can pick up a few eggplants on my plate later to replenish the fat."
"Okay, then I'm welcome."
The two of them finished dinner in a hurry. Chen Feng continued back to the laboratory, and Ling Zhi returned to the dormitory and picked up the novel he had almost finished reading. It was the science fiction novel "Secret" written by the famous suspense writer Keigo Higashino.
The story mainly tells the story of a wife and daughter who encounter a car accident and the wife's soul penetrates the daughter's body. The hero lives with the daughter who possesses the wife's soul.
After reading the ending, my daughter started a new life of her own and got married as a woman. I don’t know whether this ending is happy or sad.
Ling Zhi has a strong sense of immersion in reading books. He often thinks about what choices he would make if he were the male protagonist. Are he really willing to let go and let his daughter live a new life? Ling Zhi feels that he may not be able to do better than the male protagonist.
get better.
Damn, just reading a book makes me sad.
Ling Zhi smiled and shook his head, closed the book, opened his computer, and found a video of an English billiards match. This has been his long-standing habit. When there is a billiards match, he watches the live broadcast, and when there is no billiards match, he watches the video.
.
The video he opened at this moment was a match between Ronnie O'Sullivan and Neil Robertson at a Masters held in China many years ago.