论坛 › 全国大学生数学建模竞赛(CUMCM) › 对数学有兴趣者进

szj_007 发表于 2005-7-27 04:06

对数学有兴趣者进

<P  align=center><B><FONT face="Times New Roman"> </FONT></B><B>货运公司的收益问题</B><B><p></p></B></P>
<P  align=center><p><FONT face="Times New Roman"> </FONT></p></P>
<P ><FONT face="Times New Roman">    </FONT>某货运公司拥有<FONT face="Times New Roman">3</FONT>辆卡车，每辆载重量均为<FONT face="Times New Roman">8000kg</FONT>，可载体积为<FONT face="Times New Roman">9.084m<SUP>3</SUP></FONT>，该公司为客户从甲地托运货物到乙地，收取一定费用。托运货物可分为四类：<FONT face="Times New Roman">A</FONT>、鲜活类<FONT face="Times New Roman">, B</FONT>、禽菌类<FONT face="Times New Roman">, C</FONT>、服装类<FONT face="Times New Roman">, D</FONT>、其他类，公司有技术实现四类货物任意混装。平均每类每<FONT face="Times New Roman">kg</FONT>所占体积和相应托运单价如下表：</P>
<P>
<TABLE  cellSpacing=0 cellPadding=0 width="100%" border=1>

<TR >
<TD  vAlign=top width="33%">
<P >类别</P></TD>
<TD  vAlign=top width="16%">
<P >鲜活类</P></TD>
<TD  vAlign=top width="16%">
<P >禽菌类</P></TD>
<TD  vAlign=top width="16%">
<P >服装类</P></TD>
<TD  vAlign=top width="16%">
<P >其他类</P></TD></TR>
<TR >
<TD  vAlign=top width="33%">
<P >体积<FONT face="Times New Roman">(m<SUP>3</SUP>/kg)</FONT></P></TD>
<TD  vAlign=top width="16%">
<P ><FONT face="Times New Roman">0.0012</FONT></P></TD>
<TD  vAlign=top width="16%">
<P ><FONT face="Times New Roman">0.0015</FONT></P></TD>
<TD  vAlign=top width="16%">
<P ><FONT face="Times New Roman">0.003</FONT></P></TD>
<TD  vAlign=top width="16%">
<P ><FONT face="Times New Roman">0.0008</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="33%">
<P >托运单价<FONT face="Times New Roman">(</FONT>元<FONT face="Times New Roman">/kg)</FONT></P></TD>
<TD  vAlign=top width="16%">
<P ><FONT face="Times New Roman">1.7</FONT></P></TD>
<TD  vAlign=top width="16%">
<P ><FONT face="Times New Roman">2.25</FONT></P></TD>
<TD  vAlign=top width="16%">
<P ><FONT face="Times New Roman">4.5</FONT></P></TD>
<TD  vAlign=top width="16%">
<P ><FONT face="Times New Roman">1.12</FONT></P></TD></TR></TABLE></P>
<P ><p><FONT face="Times New Roman"> </FONT></p></P>
<P ><FONT face="Times New Roman">    </FONT>托运手续是客户首先向公司提出托运申请，公司给予批复，客户根据批复量交货给公司托运。申请量与批复量均以<FONT face="Times New Roman">kg</FONT>为单位，例如客户申请量为<FONT face="Times New Roman">1000kg</FONT>，批复量可以为<FONT face="Times New Roman">0</FONT>～<FONT face="Times New Roman">1000kg</FONT>内的任意整数，若取<FONT face="Times New Roman">0</FONT>则表示拒绝客户的申请。</P>
<P ><FONT face="Times New Roman">    </FONT>问题<FONT face="Times New Roman"> 1</FONT>、如果某大客户申请量为：<FONT face="Times New Roman">  A</FONT>类<FONT face="Times New Roman">  6500kg</FONT>，<FONT face="Times New Roman">  B</FONT>类<FONT face="Times New Roman">  5000kg</FONT>，<FONT face="Times New Roman">  C</FONT>类<FONT face="Times New Roman"> 4000kg</FONT>，<FONT face="Times New Roman">  D</FONT>类<FONT face="Times New Roman"> 3000kg</FONT>，如果要求<FONT face="Times New Roman">C</FONT>类货物占用的体积不能超过<FONT face="Times New Roman">B</FONT>、<FONT face="Times New Roman">D</FONT>两类体积之和的三倍（注意：仅在问题<FONT face="Times New Roman">1</FONT>中作此要求）。问公司应如何批复，才能使得公司获利最大？</P>
<P ><FONT face="Times New Roman">    </FONT>问题<FONT face="Times New Roman">2</FONT>、每天各类货物的申请总量是随机量，为了获取更大收益，需要对将来的申请总量进行预测。现有一个月的数据（见附件一），请预测其后<FONT face="Times New Roman">7</FONT>天内，每天各类货物申请量大约是多少？</P>
<P ><FONT face="Times New Roman">    </FONT>问题<FONT face="Times New Roman">3</FONT>、一般，客户的申请是在一周前随机出现的，各类申请单立即批复，批复后即不能更改，并且不能将拒绝量（即申请量减批复量）累计到以后的申请量。请根据你对下周<FONT face="Times New Roman">7</FONT>天中各类货物申请量的预测，估算这<FONT face="Times New Roman">7</FONT>天的收益各为多少？</P>
<P  align=center>附件一<FONT face="Times New Roman">  </FONT>某月申请量数据表<FONT face="Times New Roman">(</FONT>单位：<FONT face="Times New Roman">kg</FONT>）</P>
<P>
<TABLE  cellSpacing=0 cellPadding=0 width="100%" border=0>

<TR >
<TD  vAlign=top width="16%">
<P  align=center>日期</P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">A</FONT>类</P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">B</FONT>类</P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">C</FONT>类</P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">D</FONT>类</P></TD>
<TD  vAlign=top width="16%">
<P  align=center>总计</P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1601</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2845</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4926</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2239</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">11611</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">5421</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2833</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2871</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">243</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">11368</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1890</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4488</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4447</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2750</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">13575</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4439</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4554</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2996</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1484</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">13473</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">5</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1703</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2928</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">5088</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4378</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">14097</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">6</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3232</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3497</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2829</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3593</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">13151</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">7</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">376</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2261</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3893</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2117</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">8647</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">8</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1167</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">6921</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">6706</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1873</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">16667</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">9</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1897</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1391</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">8064</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1750</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">13102</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">10</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3737</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3580</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3386</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">5938</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">16641</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">11</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1807</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4451</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">5317</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1459</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">13034</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">12</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1628</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2636</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3112</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">7757</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">15133</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">13</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1723</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3471</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4226</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2441</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">11861</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">14</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2584</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3854</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4520</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1373</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">12331</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">15</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1551</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3556</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3494</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2365</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">10966</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">16</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2479</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2659</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2918</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2660</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">10716</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">17</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1199</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4335</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2860</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3078</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">11472</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">18</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4148</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2882</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">5514</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3636</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">16180</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">19</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2449</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4084</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2008</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3081</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">11622</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">20</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2026</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1999</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">5822</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3204</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">13051</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">21</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1690</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2889</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2840</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1318</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">8737</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">22</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3374</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2157</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2893</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4083</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">12507</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">23</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2015</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2510</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1121</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3833</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">9479</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">24</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2480</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3409</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1663</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1773</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">9325</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">25</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">850</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3729</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2736</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2519</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">9834</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">26</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2249</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3489</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4552</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">6050</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">16340</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">27</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1674</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3172</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">8794</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4710</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">18350</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">28</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3666</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4568</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">5552</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1179</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">14965</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">29</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2029</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">4015</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">11953</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2393</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">20390</FONT></P></TD></TR>
<TR >
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">30</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">1238</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">3666</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">9552</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">2579</FONT></P></TD>
<TD  vAlign=top width="16%">
<P  align=center><FONT face="Times New Roman">17035</FONT></P></TD></TR></TABLE></P>

<P><FONT color=#e6421a>请问用什么方法能建立第二问的模型????</FONT></P>

bigboss 发表于 2005-7-27 16:57

<P>曲线拟合+整数规划，完了，很简单</P>

CoCoYin 发表于 2005-7-31 22:18

<P>同问，第二问的数据拟合应该怎么做？用什么依据？</P>

ilikenba 发表于 2005-8-1 22:18

可以先算一算方差和均值，在看看是否符合一些常规的分布，比如说T分布，使用假设检验的方法验证一下正确性！如果还不行，可以使用多项式拟合的方法做，因为有定理可以保证任何光滑的函数都可以用多项式函数作任意程度的近似！所以总可以找到一个合适的多项式函数符合要求，通常只用5次以下的多项式函数！

bigboss 发表于 2005-8-2 17:54

<P>在0.95的置信水平下，找出异常点，然后讨论异常点和这个异常点前面那个点的变化关系，如果变化过大，那么异常点舍去，否则考虑保留异常点。然后去除掉异常点后，用插值或者曲线拟和都可以了。</P>

chongshengxuli 发表于 2013-3-20 11:41

回复的好专业，貌似不是很懂！看来还是要好好学习数学啊。

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