I am interested in "Creating Synthetic Data with SAS/OR", it was posted at SAS support community:
https://blogs.sas.com/content/operations/2017/05/17/creating-synthetic-data-sasor/
The method involved in a macro including 3 inner macros, when ran the macro to create synthetic data, a error message came up from the macro for IP step portion, here is the log:
229 *IP Step; 230 %macro IPSTEP(OUTPUTDATA, MOMENTORDER, NUMOBS, MINNUMIPCANDS, MILPMAXTIME, 231 RELOBJGAP); 232 num numSynthObs init &NUMOBS; 233 if (numSynthObs = 0) then numSynthObs = nObs; 234 num momRange {mi in MOM_IDX_SET} = momUb[mi] - momLb[mi]; 235 var Assigned {IPCANDS[1]} binary; 236 var ScaledEta {MOM_IDX_SET} >= 0; 237 var MaxError >= 0; 238 minimize IpObj = MaxError; 239 con MaxCon {mi in MOM_IDX_SET}: 240 MaxError >= ScaledEta[mi]; 241 con UpperIP {mi in MOM_IDX_SET}: 242 (1/numSynthObs) * 243 sum {ob in IPCANDS[1]} ipObMoms[1,ob,mi]*Assigned[ob] - 244 momRange[mi]*ScaledEta[mi] <= momUb[mi]; 245 con LowerIP {mi in MOM_IDX_SET}: 246 (1/numSynthObs) * 247 sum {ob in IPCANDS[1]} ipObMoms[1,ob,mi]*Assigned[ob] + 248 momRange[mi]*ScaledEta[mi] >= momLb[mi]; 249 con NumAssigned: 250 sum {ob in IPCANDS[1]} Assigned[ob] = numSynthObs; 251 /* Set an initial solution, then solve */ 252 for {i in 1..numSynthObs} Assigned[i] = 1; 253 for {mi in MOM_IDX_SET} ScaledEta[mi] = if momRange[mi] <= 0 then 0 254 else max(((1/numSynthObs) * 255 sum {ob in IPCANDS[1]} ipObMoms[1,ob,mi]*Assigned[ob] 256 - momUb[mi]) / momRange[mi], momLb[mi] - (1/numSynthObs) * 257 sum {ob in IPCANDS[1]} ipObMoms[1,ob,mi]*Assigned[ob])/momRange[mi],0); /**/ 258 MaxError = max {mi in MOM_IDX_SET: momRange[mi] > 0} ScaledEta[mi]; 259 solve with MILP / maxtime=&MILPMAXTIME relobjgap=&RELOBJGAP 260 heuristics=3 primalin; 261 /* Save selected observations to data set */ 262 set FINALOBS = 1..numSynthObs; 263 num finalObsVal {FINALOBS,VARS}; 264 num obIdx init 0; 265 for {ob in IPCANDS[1]: Assigned[ob] > 0.5} do; 266 obIdx = obIdx + 1; 267 for {v in VARS} 268 finalObsVal[obIdx,v] = ipObVal[1,ob,varName2varIdx[v]]; 269 end; 270 create data &OUTPUTDATA(drop=tmpvar) from [tmpvar]=FINALOBS 271 {j in VARS} <col(j)=finalObsVal[tmpvar,j]>; 272 %mend IPSTEP; 273 %GENDATA(INPUTDATA=OriginalData, METADATA=Metadata, NUMOBS=100, 274 MOMENTORDER=2, MILPMAXTIME=60, RANDSEED=100); NOTE: Writing HTML Body file: sashtml.htm NOTE: There were 9 observations read from the data set WORK.METADATA. NOTE: There were 5039 observations read from the data set WORK.ORIGINALDATA. Number of IP step candidate observations: 209 NOTE: Line generated by the invoked macro "IPSTEP". 6 ,mi]*Assigned[ob])/momRange[mi],0); - 22 200 ERROR 22-322: Syntax error, expecting one of the following: ;, !, !!, &, *, **, +, -, .., /, <, <=, <>, =, >, ><, >=, AND, BY, CROSS, DIFF, ELSE, IN, INTER, NOT, OR, SYMDIFF, TO, UNION, WITHIN, ^, ^=, |, ||, ~, ~=. ERROR 200-322: The symbol is not recognized and will be ignored. NOTE: Problem generation will use 4 threads.
I have posted this question to "Programming", here is the link for your reference:
https://communities.sas.com/t5/SAS-Programming/Synthetic-data/m-p/717429#M221871
I would appreciate it very much if anyone can help fix the issue. Thank you!
Hi @Jerrynetwork,
I think you (and the SASGF paper) have an unbalanced parenthesis in the second argument of the MAX function where the error occurs (highlighted in red below):
max(((1/numSynthObs) * sum {ob in IPCANDS[1]} ipObMoms[1,ob,mi]*Assigned[ob] - momUb[mi]) / momRange[mi], (momLb[mi] - (1/numSynthObs) * sum {ob in IPCANDS[1]} ipObMoms[1,ob,mi]*Assigned[ob])/momRange[mi],0)
I guess that the missing opening parenthesis should be where I inserted the green one above. But I can't test it because SAS/OR (sadly) isn't included in my SAS license. Can you try to reproduce the results of the example using sashelp.heart in the paper after inserting that parenthesis?
I am reading "Creating Synthetic Data with SAS/OR" from SAS support here:
https://blogs.sas.com/content/operations/2017/05/17/creating-synthetic-data-sasor/
A paper including more detail can be found here:
https://support.sas.com/resources/papers/proceedings17/1224-2017.pdf
There are 4 macros for the entire process (including 3 inner macros).
When I run the macro to create synthetic data, a error message came up for the IP step portion, it says:
ERROR 22-322: Syntax error, expecting one of the following: ;, !, !!, &, *, **, +, -, .., /, <, <=,
<>, =, >, ><, >=, AND, BY, CROSS, DIFF, ELSE, IN, INTER, NOT, OR, SYMDIFF, TO, UNION,
WITHIN, ^, ^=, |, ||, ~, ~=.
ERROR 200-322: The symbol is not recognized and will be ignored.
Here is the portion where error message came from (syntax issue at the last row):
for {i in 1..numSynthObs} Assigned[i] = 1;
for {mi in MOM_IDX_SET} ScaledEta[mi] = if momRange[mi] <= 0 then 0
else max(((1/numSynthObs) *
sum {ob in IPCANDS[1]} ipObMoms[1,ob,mi]*Assigned[ob]
- momUb[mi]) / momRange[mi], momLb[mi] - (1/numSynthObs) *
sum {ob in IPCANDS[1]} ipObMoms[1,ob,mi]*Assigned[ob])/momRange[mi],0);
macro for IP step was attached.
Is anyone familiar with synthetic data generation and can help fix the issue? Thank you.
Many of us (including me) will not download Microsoft Office (or any other) attachments, as they can be a security threat.
Please do not show us portions of the log detached from the actual code used.
Please include the SAS log in the reply. Please show us the log of the relevant section of the log, with nothing chopped out. That relevant section of the log should show the code, the NOTEs WARNINGs and ERRORs, in the sequence that it appears in the log. Please post the log by clicking on the </> icon and pasting the log as text into the window that appears, this will preserve the formatting of the log and make it easier for everyone to read and understand. If you don't preserve the format of the LOG in this way, I usually don't bother reading the log, and ask again for the proper format.
Here is the log with error message, thank you!
272 %mend IPSTEP; 273 %GENDATA(INPUTDATA=OriginalData, METADATA=Metadata, NUMOBS=100, 274 MOMENTORDER=2, MILPMAXTIME=60, RANDSEED=100); NOTE: Writing HTML Body file: sashtml.htm NOTE: There were 9 observations read from the data set WORK.METADATA. NOTE: There were 5039 observations read from the data set WORK.ORIGINALDATA. Number of IP step candidate observations: 209 NOTE: Line generated by the invoked macro "IPSTEP". 6 ,mi]*Assigned[ob])/momRange[mi],0); - 22 200 ERROR 22-322: Syntax error, expecting one of the following: ;, !, !!, &, *, **, +, -, .., /, <, <=, <>, =, >, ><, >=, AND, BY, CROSS, DIFF, ELSE, IN, INTER, NOT, OR, SYMDIFF, TO, UNION, WITHIN, ^, ^=, |, ||, ~, ~=. ERROR 200-322: The symbol is not recognized and will be ignored. NOTE: Problem generation will use 4 threads.
This is the equivalent of a "clerical error".
Take a look at the GENDATA macro declaration, especially its parameterization:
%macro GENDATA(INPUTDATA, METADATA, OUTPUTDATA=SyntheticData,MOMENTORDER=3, NUMOBS=0
, MINNUMIPCANDS=0, LPBATCHSIZE=10, LPGAP=1E-3,NUMCOFORTHREADS=1, MILPMAXTIME=600, RELOBJGAP=1E-4
, ALPHA=0.95,RANDSEED=0 );
The first two arguments are positional. They must be specified in the order declared, and they must be specified as values only. All the other parameters are of the "name=value" category, which can be specified in any order, and must be specified as "name=value" pairs.
But your call to %GENDATA is
%GENDATA(INPUTDATA=OriginalData, METADATA=Metadata, NUMOBS=100,MOMENTORDER=2, MILPMAXTIME=60, RANDSEED=100);
while it should be
%GENDATA(OriginalData,Metadata, NUMOBS=100,MOMENTORDER=2, MILPMAXTIME=60, RANDSEED=100);
So one or both of the symbols INPUTDATA or METADATA were not passed to the macro - causing the message your reported.
Thank you for your response! but change the first two arguments to position value, the error message still there.
Thank you!
Hello, @Jerrynetwork , next time, as I requested, could you just provide "the relevant section" of the log and not hundreds of lines before and after the error. This will result in you getting better and faster answers. Thanks.
ok, it is edited. Thank you.
Hi @Jerrynetwork,
I think you (and the SASGF paper) have an unbalanced parenthesis in the second argument of the MAX function where the error occurs (highlighted in red below):
max(((1/numSynthObs) * sum {ob in IPCANDS[1]} ipObMoms[1,ob,mi]*Assigned[ob] - momUb[mi]) / momRange[mi], (momLb[mi] - (1/numSynthObs) * sum {ob in IPCANDS[1]} ipObMoms[1,ob,mi]*Assigned[ob])/momRange[mi],0)
I guess that the missing opening parenthesis should be where I inserted the green one above. But I can't test it because SAS/OR (sadly) isn't included in my SAS license. Can you try to reproduce the results of the example using sashelp.heart in the paper after inserting that parenthesis?
Yes, there is a unbalanced parenthesis, added a parenthesis, error disappeared and it works. but I don't quite understand the calculation, hope the modification meet owner's original design. Thank you!
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