How the Query Match Score is calculated?

[Former Member]

For the Query Match Score, returned by the CONTAINS clause/predicate of UDA, the UDA documentation (page 54) only gives general information about the parameters that affect the score value returned, but not the formula used to calculate the returned score value.

How is the score value calculated? 

What is the (mathematical) formula used?

[Former Member · Accepted solution]

Hi Uvernes,

There are some further details in the SQL Anywhere manuals regarding scores for full text search.

=> See : SQL Anywhere 12.0.1 > Scores for full text search results

I am not aware of the algorithms used here, I suspect they are internal & confidential.

Hope this helps

Andrew

[Former Member · Accepted solution]

Hi Uvernes,

Let us know if you need anything else on this one.

Best regards,

Andrew

[Former Member · Accepted solution]

Thanks a lot Andrew, I was looking for a more technical way to predict the outcome of the Query Match Score.  The idea is to educate the users to identify relevance of the results based in the absolute value of the score.