自昨天以来，我一直在努力解决这个问题，并且已经在stackoverflow上完成了大量的材料和一些答案。 我还创建了一个我在下面粘贴的基本代码。
背景
我们有药物的单位数据，可以组合成一个组合，称为方案。例如，药物1 +药物2将是方案1，药物1 +药物2 +药物3将是方案2并且药物1 +药物2 +药物4将是方案3。 我们的最终目标是找出治疗方案中的患者数量。这只能通过找到每种方案对市场的％贡献（称为患者份额）来实现（由于跨方案的多种用途，我们无法直接从单位计算）。
基本上
units = patientshare * dosing * compliance * duration of therapy * total patients
我们知道治疗的单位，剂量和持续时间 总患者，依从性和患者份额将是有限变量。
我的问题是变量和约束处于不同的水平。
单位处于药物水平（和月份）;
给药处于药物水平;
合规是药物水平;
治疗持续时间处于治疗水平;
患者分享处于治疗水平
这是我的代码，如果有人能告诉我哪里出错了（我怀疑在阵列中），我将不胜感激。
PROC OPTMODEL;
SET <STRING> DRUG;
SET <STRING> REGIMEN;
SET <STRING> MONTH;
NUMBER DOSING{DRUG};
READ DATA DRUG_DATA INTO DRUG=[DRUG] DOSING;
/*PRINT DOSING;*/
NUMBER COMPLIANCE{DRUG};
READ DATA DRUG_DATA INTO DRUG=[DRUG] COMPLIANCE;
/*PRINT COMPLIANCE;*/
NUMBER DOT{drug, regimen};
READ DATA REGIMEN INTO drug=[drug]
{R in regimen}< DOT [drug, R]=col(R)>;
PRINT DOT;
NUMBER UNITS{MONTH, DRUG};
READ DATA DATASET INTO MONTH=[MONTH]
{D IN DRUG}< UNITS[MONTH, D]=COL(D)>;
/*PRINT UNITS;*/
NUMBER RATIO{MONTH};
READ DATA RATIO_1 INTO MONTH=[MONTH] RATIO;
/*PRINT RATIO;*/
/*DEFINE THE PARAMETERS*/
var ps {MONTH,DRUG} init 0.1 >=0 <=1,
annualpatients init 7000 <=7700 >=6300,
compliance init 0.1 >=0.3 <=0.8,
DOSING[RIB] INIT 5 >=6 <=4;
/*SET THE OBJECTIVE*/
min sse = sum{M IN MONTH}( (units[M,D in drug]-(ps[M,R IN REGIMEN]*annualpatients*ratio[M]*dosing[D]*compliance[D]*dot[R]*7 ))**2 );
/*SET THE CONSTRAINTS*/
constraint MONTHLY_patient_share {M IN MONTH}: sum{r is regimen}(ps[R IN REGIMEN])=1;
constraint total_patients sum{M in months, r in regimen} : ps[m,r in regimen]*annualpatients*ratio[m]=annual_patients;
expand;
solve with nlpc;
quit;
这是日志：
2824 PROC OPTMODEL;
2825
2826 /*DEFINE THE DATA LEVELS (SETS) OF DRUGS, MONTH AND REGIMEN*/
2827
2828 SET <STRING> DRUG;
2829 SET <STRING> REGIMEN;
2830 SET <STRING> MONTH;
2831
2832 NUMBER DOSING{DRUG};
2833 READ DATA DRUG_DATA INTO DRUG=[DRUG] DOSING;
NOTE: There were 4 observations read from the data set WORK.DRUG_DATA.
2834 /*PRINT DOSING;*/
2835
2836 /*NUMBER COMPLIANCE{DRUG};*/
2837 /*READ DATA DRUG_DATA INTO DRUG=[DRUG] COMPLIANCE;*/
2838 /*PRINT COMPLIANCE;*/
2839
2840 NUMBER DOT{drug, regimen};
2841 READ DATA REGIMEN INTO drug=[drug]
2842 {R in regimen}< DOT [drug, R]=col(R)>;
ERROR: The symbol 'REGIMEN' has no value at line 2842 column 7.
2843 PRINT DOT;
ERROR: The symbol 'REGIMEN' has no value at line 2840 column 18.
2844
2845 NUMBER UNITS{MONTH, DRUG};
2846 READ DATA DATASET INTO MONTH=[MONTH]
2847 {D IN DRUG}< UNITS[MONTH, D]=COL(D)>;
NOTE: There were 12 observations read from the data set WORK.DATASET.
2848 /*PRINT UNITS;*/
2849
2850 NUMBER RATIO{MONTH};
2851 READ DATA RATIO_1 INTO MONTH=[MONTH] RATIO;
NOTE: There were 12 observations read from the data set WORK.RATIO_1.
2852 /*PRINT RATIO;*/
2853
2854 /*DEFINE THE PARAMETERS*/
2855
2856 var ps {MONTH,DRUG} init 0.1 >=0 <=1,
2857 annualpatients init 7000 <=7700 >=6300,
2858 compliance init 0.1 >=0.3 <=0.8,
2859 DOSING[RIB] INIT 5 >=6 <=4;
-
22
200
------
528
ERROR 22-322: Syntax error, expecting one of the following: ;, ',', <=, >=, BINARY, INIT,
INTEGER, {.
ERROR 200-322: The symbol is not recognized and will be ignored.
ERROR 528-782: The name 'DOSING' is already declared.
2860
2861 /*SET THE OBJECTIVE*/
2862 min sse = sum{M IN MONTH}( (units[M,D in drug]-(ps[M,R IN
- - -- -
-
-
-
537 651 631 651
537
537
648
ERROR 537-782: The symbol 'D' is unknown.
ERROR 651-782: Subscript 2 must be a string, found a number.
ERROR 648-782: The subscript count does not match array 'DOT', 1 NE 2.
--
-
631
647
ERROR 631-782: The operand types for 'IN' are mismatched, found a number and a set<string>.
ERROR 647-782: The name 'compliance' must be an array.
2862! min sse = sum{M IN MONTH}( (units[M,D in drug]-(ps[M,R IN
-
-
-
537
651
537
2862! REGIMEN]*annualpatients*ratio[M]*dosing[D]*compliance[D]*dot[R]*7 ))**2 );
ERROR 537-782: The symbol 'R' is unknown.
ERROR 651-782: Subscript 1 must be a string, found a number.
2863
2864
2865 /*SET THE CONSTRAINTS*/
2866 constraint MONTHLY_patient_share {M IN MONTH}: sum{r in regimen}(ps[R IN REGIMEN])=1;
-
648
ERROR 648-782: The subscript count does not match array 'ps', 1 NE 2.
2867 constraint total_patients sum{M in months, r in regimen} : ps[m,r in
---
22
76
2867! regimen]*annualpatients*ratio[m]=annual_patients;
ERROR 22-322: Syntax error, expecting one of the following: !!, (, *, **, +, -, .., /, :, <=, <>,
=, ><, >=, BY, CROSS, DIFF, ELSE, INTER, SYMDIFF, TO, UNION, [, ^, {, ||.
ERROR 76-322: Syntax error, statement will be ignored.
2868
2869 expand;
NOTE: Previous errors might cause the problem to be resolved incorrectly.
ERROR: The constraint 'MONTHLY_patient_share' has an incomplete declaration.
NOTE: The problem has 50 variables (0 free, 0 fixed).
NOTE: The problem has 0 linear constraints (0 LE, 0 EQ, 0 GE, 0 range).
NOTE: The problem has 0 nonlinear constraints (0 LE, 0 EQ, 0 GE, 0 range).
NOTE: Unable to create problem instance due to previous errors.
2870 solve with nlpc;
ERROR: No objective has been specified at line 2870 column 6.
2871 quit;
NOTE: The SAS System stopped processing this step because of errors.
NOTE: PROCEDURE OPTMODEL used (Total process time):
real time 0.07 seconds
cpu time 0.07 seconds
答案 0 :(得分：0)
发生第一个错误（在日志行2842上），因为OPTMODEL在您引用它时没有设置REGIMEN的数据。
我无法看到您的数据集，但似乎您有DRUG - by - REGIMEN矩阵。
因此，在使用它来读取列之前，您需要告诉OPTMODEL REGIMEN的列表。以下是将列名称读入OPTMODEL的两种有效方法：
/* a simple example matrix with numbers and their squares */
data m_by_n (drop=i);
do i = 1 to 3;
n = i;
n_square = i * i;
output;
end;
run;
/* get the variable names in the `name` column, plus other information */
proc contents data=m_by_n out=contents_of_m_by_n; quit;
proc optmodel;
set ROWS;
set<str> COLS;
num val{ROWS,COLS};
/* use the output from PROC CONTENTS */
read data contents_of_m_by_n into COLS=[name];
read data m_by_n into ROWS=[_N_]
{ j in COLS }< val[_N_,j] = col( j ) >;
put val[*]=;
/* Or, all within OPTMODEL */
num dsid init open('m_by_n');
set COLS2 = setof{i in 1 .. attrn(dsid,'nvars')} varname(dsid,i);
read data m_by_n into ROWS=[_N_]
{ j in COLS2 }< val[_N_,j] = col( j ) >;
put val[*]=;
quit;