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发表于 2004-9-7 16:54:46
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< 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman">以上的运输的题Lingo</FONT>表示:</FONT></P>< 0cm 0cm 0pt"><p><FONT face="Times New Roman" size=3> </FONT></p></P>< 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>MODEL:</FONT></P><P 0cm 0cm 0pt"><p><FONT face="Times New Roman" size=3> </FONT></p></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>MIN = @SUM( LINKS( I, J): COST( I, J) * VOLUME( I, J));</FONT></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>@FOR( VENDORS( J): @SUM( WAREHOUSES( I): VOLUME( I, J)) = DEMAND( J));</FONT></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>@FOR( WAREHOUSES( I): @SUM( VENDORS( J): VOLUME( I, J)) <= CAPACITY( I));</FONT></P><P 0cm 0cm 0pt"><p><FONT face="Times New Roman" size=3> </FONT></p></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>END</FONT></P><P 0cm 0cm 0pt"><p><FONT face="Times New Roman" size=3> </FONT></p></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>Defining the Sets</FONT></P><P 0cm 0cm 0pt"><p><FONT face="Times New Roman" size=3> </FONT></p></P><P 0cm 0cm 0pt"><FONT size=3>以关键词<FONT face="Times New Roman">SETS:</FONT>开始,<FONT face="Times New Roman">ENDSETS</FONT>结束</FONT></P><P 0cm 0cm 0pt"><FONT size=3>上例中,我们定义三个集合:</FONT></P><P 0cm 0cm 0pt"><p><FONT face="Times New Roman" size=3> </FONT></p></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>SETS:</FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> WAREHOUSES / WH1 WH2 WH3 WH4 WH5 WH6/: CAPACITY;</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> VENDORS / V1 V2 V3 V4 V5 V6 V7 V8/: DEMAND;</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> LINKS( WAREHOUSES, VENDORS): COST, VOLUME;</FONT></FONT></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>ENDSETS</FONT></P><P 0cm 0cm 0pt"><p><FONT face="Times New Roman" size=3> </FONT></p></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>Inputting the Data</FONT></P><P 0cm 0cm 0pt"><p><FONT face="Times New Roman" size=3> </FONT></p></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>DATA:</FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> CAPACITY = 60 55 51 43 41 52;</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> DEMAND = 35 37 22 32 41 32 43 38;</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> COST = 6 2 6 7 4 2 5 9</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> 4 9 5 3 8 5 8 2</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> 5 2 1 9 7 4 3 3</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> 7 6 7 3 9 2 7 1</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> 2 3 9 5 7 2 6 5</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> 5 5 2 2 8 1 4 3;</FONT></FONT></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>ENDDATA</FONT></P><P 0cm 0cm 0pt"><p><FONT face="Times New Roman" size=3> </FONT></p></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>MODEL:</FONT></P><P 0cm 0cm 0pt"><p><FONT face="Times New Roman" size=3> </FONT></p></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>!A 6 Warehouse 8 Vendor Transportation Problem;</FONT></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>SETS:</FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> WAREHOUSES/ WH1 WH2 WH3 WH4 WH5 WH6/: CAPACITY;</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> VENDORS/ V1 V2 V3 V4 V5 V6 V7 V8/: DEMAND;</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> LINKS (Warehouses, Vendors): COST, VOLUME;</FONT></FONT></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>ENDSETS</FONT></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>!The objective;</FONT></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>MIN = @SUM( LINKS( I, J): </FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> COST( I, J) * VOLUME( I, J));</FONT></FONT></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>!The demand constraints;</FONT></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>@FOR( VENDORS( J): </FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> @SUM( WAREHOUSES( I): VOLUME( I, J)) = </FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> DEMAND( J));</FONT></FONT></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>!The capacity constraints;</FONT></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>@FOR( WAREHOUSES( I): </FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> @SUM( VENDORS( J): VOLUME( I, J)) <= </FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> CAPACITY( I));</FONT></FONT></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>!Here is the data;</FONT></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>DATA:</FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> CAPACITY = 60 55 51 43 41 52;</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> DEMAND = 35 37 22 32 41 32 43 38;</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> COST = 6 2 6 7 4 2 5 9 </FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> 4 9 5 3 8 5 8 2</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> 5 2 1 9 7 4 3 3</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> 7 6 7 3 9 2 7 1</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> 2 3 9 5 7 2 6 5</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman"> 5 5 2 2 8 1 4 3</FONT></FONT></P><P 0cm 0cm 0pt"><FONT size=3><FONT face="Times New Roman">ENDDATA </FONT></FONT></P><P 0cm 0cm 0pt"><p><FONT face="Times New Roman" size=3> </FONT></p></P><P 0cm 0cm 0pt"><FONT face="Times New Roman" size=3>END</FONT></P> |
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