On Wed, Nov 19, 2014 at 10:22 AM, Peter Geoghegan <p...@heroku.com> wrote: > Those are all very terse strings. What you're overlooking is what is > broken by using straight Levenshtein distance, which includes things > in the regression test that are reasonable and helpful. As I mentioned > before, requiring a greater than 50% of total string size distance > breaks this, just within the regression tests:
Maybe you'd prefer if there was a more gradual ramp-up to requiring a distance of no greater than 50% of the string size (normalized to take account of my non-default costings). Right now it's a step function of the number of characters in the string - there is no "absolute quality" requirement for strings of 6 or fewer requirements. Otherwise, there is the 50% distance absolute quality test (the test that you want to be applied generally). I think that would be better, without being much more complicated. -- Peter Geoghegan -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
