The Number of Matches Requested
TIBCO Patterns allows you to specify a definite “number of matches requested”. If you don’t specify this number explicitly, a default value of 25 matches is used. For the best performance, this number must be large enough to capture the highest number of results expected to be “of interest,” but no larger. Arbitrarily raising this number to a large value (in the hundreds or the thousands) can have a heavy impact on performance. Most applications do not require more than 50 to 100 matches to be returned. For many applications, a lesser value is more than sufficient.