compged function doesn't return correct score when with cutoff value

[Lisa-SAS]

data aa;
prty = 'TSACLLC';
nm = 'ST';
match_score1 = compged(nm,prty,200);
match_score2 = compged(nm,prty);
run;

match_score1 returns value 200, and match_score2 is 70. I can't understand why match_score1 doesn't return the correct value of 70. Please help. Thanks!

[Reeza]

Do the results you get match with the documentation results?

https://documentation.sas.com/doc/en/pgmsascdc/9.4_3.2/lefunctionsref/p1r4l9jwgatggtn1ko81fyjys4s7.h...

If you modify that code slightly to use the cutoff does it work as expected? 

data test;
   infile datalines missover;
   input String1 $char8. +1 String2 $char8. +1 Operation $40.;
   GED=compged(string1, string2);
   datalines;
baboon   baboon   match
baXboon  baboon   insert
baoon    baboon   delete
baXoon   baboon   replace
baboonX  baboon   append
baboo    baboon   truncate
babboon  baboon   double
babon    baboon   single
baobon   baboon   swap
bab oon  baboon   blank
bab,oon  baboon   punctuation
bXaoon   baboon   insert+delete
bXaYoon  baboon   insert+replace
bXoon    baboon   delete+replace
Xbaboon  baboon   finsert
aboon    baboon   trick question: swap+delete
Xaboon   baboon   freplace
axoon    baboon   fdelete+replace
axoo     baboon   fdelete+replace+truncate
axon     baboon   fdelete+replace+single
baby     baboon   replace+truncate*2
balloon  baboon   replace+insert
;

proc print data=test label;
   label GED='Generalized Edit Distance';
   var String1 String2 GED Operation;
run;

[Lisa-SAS]

Thank for your reply. I had read the document. But can't solve my questions. The true score should be 70. However if put cutoff be 200, the function returns 200 and doesn't return correct score. I found if put cutoff >=270 or remove cutoff, then the function returns correct value. Why?

data aa;
prty = 'TSACLLC';
nm = 'ST';
match_score1 = compged(nm,prty,270);
match_score2 = compged(nm,prty,200);
match_score3 = compged(nm,prty);
run;

prty	nm	match_score1	match_score2	match_score3
TSACLLC	ST	70	200	70

[ballardw]

Interesting. If you increment a cutoff value such as with this:

data aa;
   prty = 'TSACLLC';
   nm = 'ST';
   do cutoff = 80 to 210;
      match_score1 = compged(nm,prty,cutoff);
      output;
   end;
run;

we get the Cutoff value for the score until cutoff=201, then it returns 70.

This is very likely subject to the exact values used though. I might try using a slightly larger cutoff as a work around.

[Reeza]

It does seem to depend on the values - seems like this one should get reported to Tech Support @Lisa-SAS probably worth opening up a support ticket.

[Lisa-SAS]

Thank you @ballardw. When I added cutoff (used 110 in my program) in the function, I wanted to see if the code can run faster. And it did, from hours to 30 mins, due to large data sets. If use a larger cutoff value, first the issue might still exist, second will decrease the efficiency.