【AT Shared】Mack方法的一个示例
分类:Actuary & Assurance | 时间:2010-05-18 12:48 | 阅读:324人/次 | 标签:
The attached .xls file is on Mack loss reserving method. It is prepared particularly for the guys of the Actuarial Tribe (AT) China.
"Mack法-准备金评估与边际选择(标准算法与改进算法).xls" 下载点击下载附件
这个excel有打开权限密码,密码的设置来源于一个网络email传播的matrix,能够解开这个matrix的同仁可以使用密码打开excel查看文件,matrix还是很有难度的,需要想象力和predictive modeling,考验你是否是一个能够理解Mack法的精算师,如果连这个matrix都解不开的话,很有可能也就没法理解Mack方法了,呵呵。这个matrix如下:
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Join us to be listed in the spreadsheet of the Most Intelligent Chinese Actuaries ( MICA ) !
來吧,加入我們的MICA(最具智慧的中國精算從業人)名單!
If you're good at math or logical problems, solve this challenge and the answer is the password to open the spreadsheet to which you can add your name to the hall of fame. !
你若擅長數學或邏輯性的問題,解開這道挑戰題,並以答案為密碼,打開附件,將你的名字加在名人堂裡面。
What is the missing number in this logical series?
問題如下:空格中的數字為?
35, 253, 1031, 2957, 6835,
The answer is the password to open the spreadsheet that is attached to this email... If you figure it out, open the spreadsheet, type your name in, save it and resend it to your friends.
答案就是密碼,可以打開附件檔案。你若能順利解題,請將你的名字加上,存檔後再寄給你的朋友。
Good luck
祝好運
祝好運
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用MATLAB 进行多项式一拟合,很简单的
x=[1 2 3 4 5]
y=[35 253 1031 2957 6835]
polyfit(x,y,4)
ans=9 8 7 6 5
所以可以用y=9x^4+8x^3+7x^2+6X+5拟合,则y(6)=13685,所以密码是13685。