Hi On Thu, Mar 19, 2009 at 4:44 PM, Andrzej Bialecki <a...@getopt.org> wrote:
> Grant Ingersoll wrote: > >> First off, I would start by using Lucene's explain functionality to see >> why one result appears before the other. The explain method will tell you >> all the factors that go into scoring each of your results, as it goes beyond >> just term frequency. >> >> Finally, you might find >> http://www.lucidimagination.com/Community/Hear-from-the-Experts/Articles/Debugging-Relevance-Issues-Searchhelpful. >> One of the things I often tell people is that if you know a >> certain result needs to be in a certain place for a certain query, just put >> it there. Otherwise, don't sweat relative position too much unless you have >> a result that you think is good buried (i.e. page 5) deep down in your >> results. >> > > To elaborate on what Grant hinted at ... If the top-N results are good > enough, but you are concerned about their ordering, a trick that I often > find useful is to simply implement an arbitrary re-sorting of top-N results, > according to your rules of preference (business rules, or heuristics). This > way you can avoid the overfitting or doing endless tweaking, and still get > the ranking that makes sense to your users. > > > -- > Best regards, > Andrzej Bialecki <>< > ___. ___ ___ ___ _ _ __________________________________ > [__ || __|__/|__||\/| Information Retrieval, Semantic Web > ___|||__|| \| || | Embedded Unix, System Integration > http://www.sigram.com Contact: info at sigram dot com > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > >
