ampl - 我如何更改我的 AMPL mod/data 文件的容量，以免出现语法错误

Question

我来自 NEOS 服务器的问题是：

amplin，第 16 行（偏移量 239）：语法错误上下文：param Capacity{i in >>> 1...m <<< }; %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

数据为：

param m := 4;
param n := 30;

param Facilitycost:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 :=
1   2   7   7   6
2   8   3   1   5
3   2   5   6   6
4   7   5   2   3
5   5   3   6   8
6   9   8   5   1
7   4   4   6   7
8   8   4   8   11
9   10  5   2   5
10  1   8   9   9
11  7   1   5   8
12  1   7   8   8
13  1   7   8   8
14  7   1   3   6
15  3   5   8   8
16  8   1   4   8
17  7   1   3   6
18  7   3   2   4
19  10  3   3   7
20  4   4   7   9
21  4   5   5   4
22  6   6   4   2
23  9   6   2   3
24  6   4   8   10
25  6   6   4   2
26  4   7   6   4
27  8   1   3   7
28  1   8   9   8
29  6   2   6   9
30  9   6   2   3;



param Capacity:= 1 5000 2 5000 3 5000 4 5000;


param Demand:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 :=
1   220
2   374
3   351
4   432
5   161
6   300
7   300
8   219
9   339
10  312
11  653
12  440
13  207
14  492
15  91
16  190
17  351
18  323
19  23
20  157
21  281
22  233
23  409
24  215
25  7
26  680
27  215
28  395
29  165
30  333;

我的模型是：

param m; #number of facilites
param n; #number of customers needed to be served

param Facilitycost{j in 1..n, i in 1..m};

param Capacity{i in 1...m};

param Demand{j in 1..n};

#THE DECISION VARIABLES

var AllocatedFacility{j in 1..n, i in 1..m} binary;

#OBJECTIVE FUNCTION
minimize Total_AllocationCost: sum {j in 1..n, i in 1..m}:
Facilitycost[j,i] * AllocatedFacility[j,i];

#THE CONSTRAINTS
s.t. CapacityConstraints {i in 1..m}:
Demand[j] * AllocatedFacility[j,i] <= Capacity[i];

s.t. AllocatedFacilityContraints {j in 1..n}:
sum {i in 1..m} AllocatedFacility[j,i] = 1;

我怎样才能改变容量，以便满足第 i 列所需的条件？模型中的数据有问题吗？

标签： ampl

Answer 1

这一行的语法错误是因为你有1...m你应该有的地方1..m。