After February 20 10, Yan Ge began to prepare his graduation thesis. Because he is in charge of the project, he thinks that he has accumulated a certain amount in the field of optimal layout of wireless sensor networks, so he still intends to study related issues. Yun volunteered to be the instructor of his undergraduate thesis.
When writing his graduation thesis, self-pursuit provided Yan Ge with a train of thought. He introduced a conjecture in the field of optimal coverage of wireless sensors: whether the sparse 2- coverage layout of the plane is an equilateral triangular network. This is the topic of Yan Ge's graduation thesis, that is, "Sparse 2- covering Layout of Plane Congruent Disks".
Ge Kun told the China Youth Daily reporter that Yunzi asked him, "The optimal multi-coverage problem of wireless sensors, including twice coverage, was completely blank at that time and there was no research result." "He pointed out to me that in the sense of isoplane layout, if we can examine all 65,438+007 kinds of isoplane mosaic configurations one by one, we can prove that the conjecture is correct."
Yan Ge thought the problem was good, so he began to do it. However, "it is totally unrealistic to investigate all configurations of 107", so he "proved some lemmas by simple plane geometric analysis, reduced the number of cases to 22 (some cases can be investigated together, so the actual number is less than 20), and calculated the corresponding coverage densities respectively, proving that the sparse 2- covering layout of the plane is an equilateral triangular network in the sense of isoplane configuration."
During the writing of the thesis, from March 20 10, Yun Ge and Yunzi usually meet once a week, each time ranging from about ten minutes to half an hour, mainly to report the progress of the thesis. In addition, if there is great progress, such as making new achievements and completing the first draft or revised draft, teachers and students will contact each other by email at any time.
"In addition to Professor Yun's initial suggestion to test all 107 configurations, his main guidance to me is in the revision stage of the paper, such as modifying some words." Ge Wei stressed.
Yan Ge's thesis is finally one of the undergraduate graduation papers with the highest score in the Soviet Union's university base class.
After graduation, he was sent to the School of Mathematical Sciences of Xiamen University for further study.
One day in May, 20 13, he inquired about Yun's personal achievements on "Google Academic Search" and found that Yun, as a correspondent (generally referring to the person in charge of the whole project-reporter's note) and a number of collaborators and professors from famous universities at home and abroad, published an article on INFOCOM, the top conference of 201computer network.
Yan Ge found that the result of this article was the main result of his graduation thesis, but he slightly improved his thinking and reduced his 22 configurations to 12.
This article was published without my knowledge. Not only did they not list me as an author, but they didn't even mention any of my contributions. " Yan Ge said.
At the same time, the abstract of the paper said that it was "the first time to directly answer the optimal multi-coverage question", which angered Yun Ge, who thought it was "naked plagiarism and very serious academic misconduct"
For many reasons, Yan Ge did not reflect this situation in time. Until the beginning of May, 20 14, he happened to find that Yunyun had submitted a paper to the famous IEEE/ACM online journal in the engineering field, which had been hired and would be published soon. Yan Ge found this paper "almost identical in content".
In a "Detailed Description of Plagiarism Evidence" for China Youth Daily reporter, Yan Ge listed the similarities between his graduation thesis and his self-made thesis, including eight identical model diagrams, some main theorems, lemmas and proofs, and five concrete expressions of relevant situations.
Yun Ge was furious and sent an email to Yunzi: "I hope you can give me an explanation as soon as possible and take corresponding remedial measures. Otherwise, I will contact the editor-in-chief of the publication to request the withdrawal of the manuscript, and contact all units involved in the paper, including schools and fund committees, to explain the situation. " Yun asked himself to reach retirement age in 20 13, and was re-employed by the Soviet Institute of Mathematics.
In an interview with China Youth Daily, Yun replied to three explanatory materials. As for the absence of Yan Ge's signature in the paper, he explained that the conjecture of the original title of the paper was put forward by him, and only part of the proof was arranged for Yan Ge as the content of the graduation thesis writing; The proof idea, overall framework and main proof steps are all designed by him, and the verification and deduction of details are all arranged for Yan Ge.
For example, the cloud asked, "It's like scattering a handful of beans in a room full of furniture. Now you have to pick them up." Picking up only a few beans that fall in obvious places (no matter how much they account for in all beans) is no more difficult than picking up a single bean, which means that Yun Ge's paper is only an obvious part of the concrete proof.
As it happens, Yan Ge also has an analogy. He said: "It's like living in a remote mountainous area, and it's not convenient to travel. Professor Yun told me that it would be convenient to travel if you moved the mountain in front of the door. But I am not a stupid person, and I know that this idea is not operable. Finally, I thought of some means myself, digging a tunnel in the mountains or building a road to the outside world, and achieved the same goal. It is not meaningless to ask Professor Zi for guidance. After all, he gave a plan, though unrealistic. And my idea is that as long as a small part of the mountain is properly removed, the goal can be achieved. "
Yun asked himself to admit that there were some shortcomings in this matter. "Even if you are not listed as the author, after all, you should at least say hello to you, but I didn't. I am here to apologize to you. "
Yan Ge doesn't think so. He told the China Youth Daily reporter: "The key step to reduce the number of configurations (in the paper) is completely original by me, which has nothing to do with Professor Yun and is also my most important contribution in this work. This is a very simple but original job. "
There is also a view about originality. In an explanatory material to be provided to the IEEE Arbitration Commission, he pointed out that for the undergraduates of the Department of Mathematics in Chinese mainland, the graduation thesis is just a form. "there is no original requirement for the content of the paper, and it is not even required whether the results of the paper are correct or not. There are no other requirements except for the instructor to check, and no one will check. " "Undergraduate thesis does not need original statement and authorization statement."
"In a research and teaching university like Suzhou University, some teachers will do what they are doing or even have done, and let students prove the easier part or do some simple calculations. Although these grades can be written into papers without explanation, no one will regard them as students' own grades. On the contrary, if students want to publish their undergraduate dissertations separately, they must obtain the consent of the tutor. " Cloud self-help then said. Yan Ge has reported this incident to the Institute of Mathematics of Soviet University and the Institute of Mathematics of Xiamen University respectively. He told China Youth Daily: "Xiamen University's attitude is relatively objective. The headmaster gave me encouragement, and no teacher pressured me not to pursue it. Personally, I don't want Su Da's reputation to be damaged, so I really hope they can investigate this matter. "
Professor Cao, president of the Soviet Institute of Mathematics, said in response to an interview with China Youth Daily reporter about this matter: "So far, I have not fully understood the whole picture of the incident, nor have I fully understood the relevant papers, so it is inconvenient to make relevant comments." The staff of several hospitals also told reporters that it is not clear whether the school is ready to investigate this.
The plagiarism dispute between Yun Ge and Yunzi has been fermenting on the Internet for several days.
The netizen who supported Yun Ge said, "It is plagiarism to quote other people's works without indicating the source. The correct approach should be to mark the student as the author and clearly write his contribution in the text. "
The netizen who supports self-help said that Yun Ge was "looking for trouble" because "the original viewpoint really belonged to the tutor, and the research direction and content were given by the tutor".
China Youth Daily reporter interviewed many experts and scholars in the field of mathematical science on this matter, and they all said that it is difficult to determine whether plagiarism is true or not. The problem of paper signature has always been a common problem in universities and scientific research institutions, which is complicated and difficult to standardize.
Peng Yucheng, a teacher at the National Digital Learning Engineering Technology Research Center of Huazhong Normal University, said: "Mathematical plagiarism is more difficult to define than liberal arts. Not comparison. Just similar words. The most important thing in scientific research papers is thinking. Whoever puts forward the key points is the core author of the paper. If the ideas and proof ideas of the paper are put forward by professors who ask for more happiness, it really shouldn't be plagiarism. "
"But obviously, Yan Ge played a certain role in the completion of the paper (as for how much role he played, as an outsider, I don't know). Judging from his undergraduate thesis, he has done a lot of work. If the article is published, he should have the right to sign it. Unless Professor Yun can prove that the original undergraduate thesis has no contribution, otherwise, Professor Yun is doing academic misconduct. " Peng Yucheng added.
"Students have contributed, and thanks are still appropriate." According to Professor Ma Jinwen, the doctoral supervisor of applied mathematics major in Peking University Institute of Mathematical Sciences, the number of students' homework has been reduced from 107 to 22, which has a great influence on the teachers' later work. If the teacher uses the students' work results in the paper, it is really not good and not standardized to thank them at all.
Ma Jinwen also said that it is reasonable for tutors to use students' papers, but when students make contributions, they should be reflected in the papers. "Although the tutor has guided the students to complete the thesis, the guidance can't replace all the work, at least the contribution of the students can't be ignored."
He said that it is reasonable for students to ask to reflect their contributions in their papers, because papers depend on the work done by students. As for whether to sign or not, it is necessary to evaluate the contribution, and the contribution tutor will grasp it himself.
Professor Yang Yixian, a doctoral supervisor of applied mathematics major in Peking University Institute of Mathematical Sciences, believes that it is difficult for an honest official to break the housework, and teachers and collaborators should negotiate the signing. "If you care about it, it will be difficult for everyone to work together in Qi Xin." He believes that it is difficult for outsiders to judge what students have calculated and how much workload they have taken up, even academic committees.
Professor Xu Maozhi, doctoral supervisor of applied mathematics major in Peking University Institute of Mathematical Sciences, said that students' contribution to the paper should be judged according to specific conditions, and teachers should actively communicate with students before publishing the paper. If students agree not to sign, they can do so. However, if the teacher thinks that the students' contribution is not great enough and does not communicate with the students, it is necessary to show the students' contribution in the paper.
Ma Jinwen said that whether the paper is signed depends on the actual workload of the students. If students do not participate in the main work and only complete part of the calculation, they can also express their gratitude without signing.
Peng Yucheng believes that it is difficult to standardize the issue of signature, because many teachers in colleges and universities muddle along, but evaluating professional titles requires articles. Traditionally, students' school grades and papers can only be carried out with the consent of teachers. If teachers need results and they don't, they can only grasp the students' grades. The students are cowardly and have to bow their heads.