GetSimilar only returns some terms, what about the others?

Hello! 

We use iKnow's GetSimilar for decision making. Right now we have a domain with both good and bad documents and using GetSimilar we want to see if a document is more similar to the good ones or the bad ones. To do this we simply compare the weighted average of the score from the good ones and the bad ones that GetSimilar returns.  

The problem is that GetSimilar doesn't always return the score to all other documents. Assuming we have 50 documents I would expect the following result:

DO ##class(%iKnow.Queries.SourceAPI).GetSimilar(.sim,domId,id,1,200,"",$$$SIMSRCSIMPLE, $LB("ent"))

:FILE:c:\file1.txt
sim(1)=$lb(1,":FILE:c:\file2.txt", 0.4239, 0.8615, 184, 78, 563, 0.4239)
sim(2)=$lb(2,":FILE:c:\file3.txt", 0.3967, 0.7704, 184, 73, 318, 0.3967)
...
sim(49)=$lb(49,":FILE:c:\file49.txt", 0.3967, 0.7704, 184, 73, 318, 0.3967)

But for some documents the result is less then 49 lines. Does that mean score is 0? 

Are there any ways to force  it to print the score even if the score is "too low"?

Thanks!