According to the statistics and evaluation of various data 28 hours after the start of the competition on each platform (see the note for the method), the number of candidates for the 2023 Shuwei Cup is finally obtained, which is roughly
A:B:C=260：281：40
| Question number | number of candidates |
| A | 260 |
| B | 281 |
| C | 40 |
Analysis of the statistical results of the topic selection: AB is the topic selection for graduate and undergraduate students, and BC is the topic selection for junior college students. Therefore, it is reasonable that the number of candidates for question B is the highest.
At the same time, through a day's modeling of actual problems, it was found that there was a deviation in the difficulty estimate proposed on the 12th. For this competition, the difficulty should be B>A>C
Question B is not only related to differential equations, simulations are also related to optimization. The difficulty of this competition is basically ceiling difficulty for novices in modeling. Comparing all competitions in 2023, the Shuwei Cup should be the most difficult overall. Therefore, there is a lot of pressure on everyone. The competition questions are the same, and everyone is difficult. For this competition, we can only bite the bullet and do it. For question A, continue to optimize the equation and increase the visualization of the result process. Question 1 of question B is easy to do, but the difficulty of question 2 has increased sharply. If you have no idea now, you can consider choosing a topic.
In short, A differential equation
B differential equation + multi-objective optimization
According to my many experience in digital model review and the established digital model discussion group, if you want to win the prize for questions A and B in this competition, you must do one or two questions well and increase the visualization of the results to secure the prize. Remember, do one or two questions well, don't write if you don't know anything else, write more or less. The difficulty of this competition, running in the middle, and many people abandoning the race, can persist until the end, and they are basically one step away from winning the prize. Remember, don't give up.
I wish you all the best! ! ! ! !
Note: The source of the number of topic candidates: a comprehensive evaluation model is established from indicators such as reading volume of relevant topics on various platforms, number of votes for topic selection, comparison of difficulty coefficients of competition questions, and attention to works. Various data were analyzed to establish a multiple regression analysis model, and the weight coefficients of each index were calculated.
Use the weight coefficient to bring in index data such as the number of readings of relevant topics on each platform, the number of votes for topic selection, the comparison of difficulty coefficients of competition questions, and the number of attention of works to evaluate the number of topic candidates. The results are for reference only. According to the previous estimated results and the real situation announced after the game, the accuracy is better.