Question

我希望这对某人来说是显而易见的。我只使用了GLPK / MathProg。我无法弄清楚GNU MathProg（在GLPK中）的语法来执行以下操作，例如：

set PartsOfWeek;
set WeekDays;

data;
set PartsOfWeek := WorkWeek WeekEnd;

set WorkWeek := Mon Tue Wed Thu Fri;
set WeekEnd := Sat Sun;

set WeekDays := setof{d in (WorkWeek union WeekEnd)}(d);

问题在于MathProg拒绝了这一点。

一般来说，我只希望能够： - 声明一个Partition（这里是PartsOfWeek）和一个set（这里是Weekdays） - 从数据构建分区 - 使用分区中集合的元素填充集合。

更好的例子可能是季节和月份。

Answer 1

@ ALi的文献参考帮助：

set seasons;
set months;
set monthsOfseason {seasons} within months;

data;
set seasons := winter spring summer fall;
set months := jan feb mar apr may jun jul aug sep oct nov dec;
set monthsOfseason[winter] := dec jan feb;
set monthsOfseason[spring] := mar apr may;
set monthsOfseason[summer] := jun jul aug;
set monthsOfseason[fall]   := sep oct nov;

GLPK MathProg设置和组

1 个答案: