§8.1 简洁信息输出命令TERS(Terse)
1.命令功能:使屏幕上显示的运算结果简化。
2.命令格式:
:TERS<CR>
3.命令使用:在GO命令之前施行TERS命令,屏幕上显示出的解答将只有目标函数值。例如:
:LOOK ALL
MAX2X1+8X2+6X3 SUBJECTTO 2)8X1+3X2+2X3<=250 3)2X1+X2<=50 4)4X1+3X3<=150 END
:TERS
:GO
LPOPTIMUM FOUND AT STEP 2 OBJVALUE=700.000000
:QUIT
对于0-1规划问题,如果用了TERS命令后在用命令GO,则分支定界过程中的一些中间信息就不在屏幕输出中出现,使输出内容比较简洁。请看下例并与第六章中求解0-1规划的例子比较:
:LOOK ALL
MAX3X1+4X2+5X3+3X4+2X5 SUBJECTTO 2)2X1+3X2+4X3+5X4+X5<=11 3)3X1+4X2+2X3+X4+3X5<=16 4)7X1+2X2+5X3+4X4+2X5<=19 END
INTE 3
:TERS
:GO
LPOPTIMUM FOUND AT STEP 6 NEWINTEGER SOLUTION AT BRANCH 3 PIVOT 10
OBJECTIV EFUNCTION VALUE
1)16.0000000
VARIABLE VALUE REDUCEDCOST X1 1.000000 -1.000000 X2 1.000000 -2.000000 X3 1.000000 -3.000000 X4 .000000 7.000000 X5 2.000000 .000000
ROW SLACK DUALPRICES 2) .000000 2.000000 3) 1.000000 .000000 4) 1.000000 .000000
NO.ITERATIONS = 10 BRANCHES=3DETERM.=1.000E0 BESTREMAINING SOLUTION NO BETTER THAN 16.00000 ENUMERATIONCOMPLETE. BRANCHES=3 PIVOTS = 10
LASTINTEGER SOLUTION IS THE BEST FOUND
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