Being a teacher, I have detected a student(s) massively outsourcing his(their) homework to several Stack Exchange sites.
The Yandex School of Data Analysis is spread over five Russian cities, having hundreds of students. The educational program lasts for two years and consists of several courses, including "Algorithms and Data Structures" (AD) and "Discrete Mathematics and Probability Theory" (DP) courses as well as some others. My name is Stepan Gatilov, I am the teacher of AD course in the Novosibirsk department.
In order to get semester grade, any student has to solve a list of home assignments (aka "homeworks") for each course. These homeworks must be solved without outside help. For obvious reasons, it is very undesirable to have the problem statements publicly available in the internet. Having problems with solutions available in public is even worse =) That's why we want several questions to be deleted completely.
We have noticed a user (or users) who asks people on stack exchange sites to solve the problems from his homework for him. After some time we have found two more users doing the same. Right now we are confident that at least two of these users are actually owned by a single person. Here is the list of users detected:
Since we have deadlines imposed on the homeworks, the student has to push his questions to community's attention to have them solved faster. As a result, he does some nasty things which are not welcome in the community. You can see some list just below. Note that most likely it is not full.
- Trivial question edits:
- Simultaneous cross-posting over different sites:
- Math overflow users complain that's exercise, not "research-level" math:
- See comments to question.
- Editing question to a completely different problem instead of asking a new one:
So, we want to ask for the help of moderators on the following matter: Could you please delete all the problematic questions? Deleting the whole user accounts is probably also OK, since they have posted only a little of content not related to the school.
The full list of problematic questions is given below. They have format "course homework-problem: (user/site)", the part in parentheses links to the question.
- AD 3-1: (g-h/SO).
- AD 2-3: (g-h/SO), was reformulated incorrectly BTW.
- DP/LinAlg 1-4: (g-h/SO).
- DP 3-15: (g-h/math).
- DP 2-12: (g-h/math).
- DP 2-6: (g-h/math).
- DP 3-12 and 3-13: (g-h/math).
- AD 3-2: (g-h/math).
- DP 2-1 and 2-2: (g-h/math).
- DP 4-12: (g-h/math).
- DP 3-9 and 3-14: (g-h/math).
- DP 3-4: (g-h/math).
- DP 4-13: (g-h/math).
- DP 3-15: (g-h/MO).
- DP 2-12: (g-h/MO).
- AD 3-1: (g-h/cstheory).
- DP 4-7: (user44255/math).
- DP 2-9: (user44255/math).
- AD 2-2: (user44255/SO).
- DP 4-2: (susua-kionio/math).
- DP 3-11: (susua-kionio/math).
- DP 3-10: (susua-kionio/math).
- DP 3-3: (susua-kionio/math).
Note that I cannot publicly post the original problem statements to prove my words, but I can provide them privately to any moderator.