Experience of mathematical modeling in 18 year research competition

It's today 11 month 10 Japan , I just learned the result of our research competition , Country two . How to put it? , This is a predictable surprise , Because I knew at that time that our team was doing well , At least three countries , Now it seems that at that time, the difficulty of national two was considered too high .

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Two months have passed , The busyness at that time is still fresh in my mind , Four days and four nights are as long as a month , The afternoon after modeling, I couldn't help falling asleep when I received a call from the teacher .

The cooperation with senior students and elder sisters is surprisingly satisfactory , This is a chemical reaction , Thank you for letting me know them , They are all very good people , May they graduate successfully , Good future .

Next, I'll write some experience I think .

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1. The first is to find two reliable teammates , This is directly related to your subsequent results .

Looking for teammates can refer to many aspects , There are also many combinations , The most common is , Two people are responsible for programming problem solving , One person is responsible for writing papers , Our team also follows this model , Our senior student is a big writer , As a sophomore just now, I'm really unsustainable in this regard , A good writer can definitely raise the result of the game to a higher level , I think the reason for our second country , The merit of senior students is indispensable . In addition, programming problem solving groups , It's the foundation of everything , It's no use doing nothing , So keep in touch with at least two people , Often exchange meaning , Because modeling and research are a bit like , There is a process of trial and error , But in fact, the division of labor of programming problem solving groups can also be slightly distinguished , for instance , I basically undertake the task of programming , And Xuejie's English is very good , On the first day, I consulted a lot of English Literature , I can't do this myself , In the process of solving problems, I am often responsible for making decisions and determining the direction , The elder sister is responsible for verifying my conclusion and then correcting it . The effect is very good . In short, it's much more reassuring to have good teammates , Of course, what is a good teammate , I don't know , I met my senior and senior sister at the digital modeling Club , At that time, I was admitted by a foreign school , be a stranger in a strange place , The students of the elder and elder sisters are busy with academic studies and lack interest in the competition , By chance, we completed this cross professional, cross grade and cross gender combination .

By the way , A traitor , Large household accounts , And grumpy people don't have a good heart Or really great God, it's best not to fly at will .

 

2. Choose a suitable topic
There's a classic joke about modeling , Change the topic from , Because this is so common in the modeling process , It's too difficult to find the right topic in a short time ,ABCDEF One by one, the whole morning is over , There are often students who do it all day and feel no idea on the first night or the next day , I decided to change the question , It's normal that you can't think of it , The topics of the research competition are not easy to do ！ It is absolutely not advisable to do it with the mentality of Solving Mathematical Olympiad problems , Many problems do not have accurate solutions , At this time, be sure to check a lot of information or go out for a meal to wake up . So about the topic , According to our team , The programming ability of elder students is too weak , To tell you the truth, I'm just a non Institute amateur, and I'm definitely not a great God , In this case, we set a goal , Too many problems involving algorithms don't touch , In addition, considering the tripod who has taught himself for two months lingo level , We set another limit , Linear programming with large amount of data does not touch , Another point is that other people's majors don't touch, such as XX aircraft , It seems that there is no problem to do so , As a result, I really saw a mechanical modeling problem , That is to say 2018 Year of A, By the way, we are a combination of Civil Engineering College and safety College , Not to mention mechanics , Structural dynamics , Elasticity has at least some foundations , Look at the attached Literature ,‘ Um. ？ It's like Euler's rotation ’ Although I still can't understand , But I always know what it is , You let the three computers in the next group don't even know the moment of inertia , Obviously, I won't choose this question , So it was decided A topic , Start checking a lot of data and papers. One check is one day , Not much until the evening , Because the mechanics of our engineers is still too poor , But thanks to my strong English ability , Finally, I got some results the next day , Greatly inspired confidence , Continue to do it strongly . This year we A The problem is done 2 Group , It's not pure mechanics , One 2 etc. , One 3 etc. ,F The question is done 10 Multiple groups , It seems that the whole army has been destroyed .. therefore , What we do more is not necessarily a good question , It's probably a cemetery ......

 

3. Pre accumulation skill package

This is what everyone who prepares for the game must prepare , Equivalent to a gun brought to the battlefield , Include Problem solving ideas and Programming packages and Essential software ,

I recommend Jiang Qiyuan to practice problem solving ？ The book of 《 mathematical modeling 》, And Zhao Jing's 《 Mathematical modeling and experiment 》 It's all the stuff that everyone pushed , But this is also necessary for getting started , Then read more papers , Try to imitate .

Programming aspect , Personally, I am python+matlab,lingo Learn a half tone , As soon as we fight, we will catch the blind , Sister can code point formula, but never use function , The senior is completely 0, Now think about it. It's really lucky , Because we are a weak programming team , I won't say much about this , It can only be said that everyone must be better than us , But even if we , Before the game, various algorithms including neural network are also included Anneal The ant colony rolled over , It's stored in the disk and ready for use , Although these optimization algorithms are useless .

Essential software , This is very important , Now many integrated software can well replace and assist programming , There are the following ,* It's a push  

*original, Classic chart software , Draw more than matlab Look at a Mount Everest , It also has the function of fitting and interpolation .

 smartdraw Software for drawing schematic diagrams , There are many alternatives to ,word It seems OK , But schematics are important , One should be reserved for this category .

*SPSS Statistical software must leave one I personally recommend spss, Simple to fit , Analyze diversity , Friendly interface , One click plot .

*excel Powerful alternatives

 

4. Make good use of school resources , More running in at the early stage .

Say use , There's nothing to take advantage of , Because the school is poor ( laugh ), But the experienced team leader must be the best signpost on the way to winning the prize , If school is really useless , At least they'll give free coffee . If you can , Let's do a simulation problem together , You can know the level of yourself and the people around you , Remember that modeling is not achievement, it's proportion , As long as they are worse than you , You are the winner ....

 

5. You can get information from the digital analog Forum , Annual practice , The official teachers are more and more arrogant and charming .

 

6. Add fewer groups during the game  

The days of the game , Each big post bar You know qq It's like a blast The first sentence is

'' brother ,X Do you have any ideas ？ ''

But as far as I'm concerned from qq The probability of obtaining available information in Basically equal to edg Into the 4 strong , Maybe asking 4396 After that, there will be a reliable answer .

And the major X The question group is full of all kinds of swindlers to collect IQ tax ,

hold 1/5 After the liar ignored , In a discussion group of hundreds of people , The rest is just bragging and bullshit .

 

 

So let's settle down and do the problem , Wish you all 2019 Achieved good results in , I can't build it anymore ！