C題 養(yǎng)老金制度的改革 第一問的程序

1、20111數(shù)學(xué)建建模競(jìng)賽賽c題程程序x=5566 6322 7445 7755 7699 7889 9985 11110 113133 14428 17882 119200 21150 22992 226011 31149 43338 551455 58809 62441 668544 76656 87772 1100007 1113774 1125667 1143332 1166114 1192228 2228444 2264004 2296888 3320774 ; yy=diiff(x); pplott(y) aa=lppc(yy,3)a = 1.000000 -1.23337 00.2

2、3302 0.110888 eestxx=fiilteer(0-aa(2:endd),1,yy); ee=y-esttx; ssubpplott(1222); pplott(laags,acss)20111數(shù)學(xué)建建模競(jìng)賽賽c題數(shù)據(jù)初步步處理：對(duì)一般般的時(shí)間間序列而而言為得得到較為為平穩(wěn)的的序列都都會(huì)對(duì)原原來的序序列進(jìn)行行取對(duì)和和差分處處理并對(duì)對(duì)新的數(shù)數(shù)列進(jìn)行行白噪聲聲檢驗(yàn)cdatta=5666,6332,7745,7555,7669,7789,9855,11110,13113,114288,17782,19220,221500,22292,26001,331499,43338,51445,55

3、8099,62241,68554,776566,87772,100007,113374,125567,143332,166614,192228,228844,264404,296688,320074; xx=loog(ccdatta); pplott(x) xx1=ddifff(x); ssubpplott(2221) pplott(x) ssubpplott(2222) pplott(x11)a=arr(x22,2)Disccrette-ttimee IDDPOLLY mmodeel: A(qq)y(t) = ee(t) A(q) = 1 - 0.20334 qq-11 - 0.002066

4、5 qq-22 y2(11)=-0.001599; yy2(22)=00.03383; ffor i=33:322 y2(i)=0.220344*y22(i-1)+0.0020665*yy2(ii-2);end pplott(x22(1:32) hholdd onn pplott(y22)真實(shí)值與與可能值值比較、程序如下下程序如下下x=5666,6332,7745,7555,7669,7789,9855,11110,13113,114288,17782,19220,221500,22292,26001,331499,43338,51445,558099,62241,68554,776566,87772,100007,113374,125567,143332,166614,192228,228844,264404,296688,320074; yy=loog(xx);x1=ddifff(y);a = 1.000000 -0.92660 00.03344 0.001577 eestxx=fiilteer(0-aa(2:endd),1,xx1);e=x11-esstx; acss,laags=