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电梯直达

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发表于 2009-2-5 13:44 |只看该作者 |倒序浏览

|招呼Ta 关注Ta

您好。对于这个问题，我想没有一定的规矩，就是“到什么时候为止最好做完什么事情。”和任何比赛一样，时间的把握完全是因人和因事情而定的。从这一点上，美赛和国赛也是很不同的。事实上，美赛对于中国学生来说，英语的翻译写作和资料的查阅会占很多时间。与国内赛明显不同的是，美赛题目更加开放，需要学习很多知识。它应该至少被安排一天的时间。之后要及时的开始自己unique的工作，否则学习得再充分也会被认为是没有价值的。由于题目的开放性，队员可以自由选择适合自己的角度和方法，所以学习的内容和任务量完全是可以控制的。另外，摘要的写作仍然十分重要。建议用最后的12个小时进行摘要和文章的修改。其他的细节应该因情况而定。由于没有人的工作会真正相同，所以完全可以有自信，不用完全依照别人的经验。自己采取的时间安排就是最恰当的安排。我可以推荐您一个特等奖的time table。比较经典，可以参考：（请注意，这是以美国时间为参照的：） Thursday evening -- Spend five or ten minutes reading the problems carefully. If everyone agrees which problem to do right off the bat -- go with it! The more fun and interesting the problem is to you, the easier it will be to work like hell on it. One of the hardest choices is if you have one problem which looks totally cool and one which is less interesting but you think you could do a better job on it. Given my own experience and that of people I know, I say go with what is most interesting -- you'll be more motivated, and you may surprise yourself. Remember, this contest is not about what you know at the beginning, but what you have taught yourself by the end. Spend about twenty minutes or so brainstorming. This means 1. Set a loose time limit. 2. Appoint one person to write down all ideas on a blackboard. If each person writes down their own ideas then they become personal property. Instead every idea should be public. 3. Get every idea you can think of on the board. 4. Try to build on the thoughts of your team mates. 5. No criticism or negative comments allowed! That's for later. After brainstorming, go back over things in a more organized manner Break each problem into the three main parts: What are you modeling? What ideas for algorithms do you have? How will you compare the algorithms? Every problem has these three components, and you MUST be able to see exactly what they are. Without breaking down the problem, you can never get a foothold on it. Also, breaking down the problem into these standard pieces keeps you from neglecting a potentially important area. Spend some time discussing all three sections, and make sure you all agree on precisely what the three parts involve. Look for other, less generic ways to break down the problem. You want to chunk out the problem into managable pieces that can be attacked one at a time. Can you break the problem up using a timetable -- a certain sequence of events? What about different classes of strategies? Identify whether the problem is well focused or very diffuse. If the problem is very big and broad then you have a lot of choice in what problem to do, and how to formulate this in mathematical terms. Later when you read papers from other teams, you'll be amazed that the teams weren't really doing the same problem! Remember this throughout the contest -- You are not only solving a problem, but creating the problem as well. When I did the submarine problem (the grand-daddy of all diffuse problems!) we formulated things in one way, then found that we couldn't solve it, and spent the rest of the contest banging around that blind alley. If it's very diffuse, there may be hundreds of possible problems that you can chose to solve -- chose the one that you can solve in the best and most interesting way. That being said, some MCM problems are well focused and you don't have a lot of options -- there really weren't too many ways to approach the MRI problem. Right from the beginning, try to recognized how focused the problem is and what choices you have. At this point you should make a tentative decision about which problem to do. If you focus on one problem the whole time then you will avoid wasting resources. The next step after deciding on the problem is research. Hit the library and find as much information as you can about all aspects of the problem. Get the resources and find out what is there and what needs to be read. Each time I participated, I held the record for most consecutive hours without sleep. (I don't remember exactly how many I managed -- things got kind of fuzzy near the end.) But you know your own limits. This contest is about pushing yourself to the limits, but don't go beyond them. This isn't about making yourself sick! You want to focus every lucid moment of the day on the problem, but you also need to maximize the number of lucid moments you have!