I'm still unclear what you want the statistics *for*. "statistics" are pretty meaningless as far as I understand. The whole point of scoring is to use various "statistics" to *rank* documents *for a specific query*. You cannot, for instance, compare scores between different queries in any meaningful way.
If you're saying that you want the documents for your query to be ranked *relative to each other*, but restricted to only the documents you care about, then I think you need a HitCollector because a Filter (last I knew) doesn't score documents therefore won't order them. But asking if the statistics reflect the whole index just isn't making any sense to me. If you're asking that question I suspect that there's something about your problem space I don't understand and you're not explaining simply enough for me to grasp <G>. So forget a Filter because you'll get the documents back in (probably, but my memory is weak some days) document ID order. Implement a HitCollector whose collect method only sets bits for docs in your list. See: http://lucene.apache.org/java/2_2_0/api/org/apache/lucene/search/HitCollector.html#collect(int,%20float) Best Erick On Sun, May 17, 2009 at 3:57 AM, liat oren <oren.l...@gmail.com> wrote: > Yes, this is what I need - I don't need to get the scores for the documents > that were filtered. > The statistics I ment are idf(t) for example. > I want these to include the whole index of course. > It will include this info of all the index, right? > > if I have a list of ids that the query should look at, which Filter should > I > use? > > Thanks a lot, > Liat > > 2009/5/14 Erick Erickson <erickerick...@gmail.com> > > > Hmmm, come to think of it, if you pass the Filter to the search I*think* > > you > > don't get scores for that clause, but you may want to > > check it out... > > > > So I think you should think about implementing a HitCollector > > and collect only the documents you care about. > > > > This is really very little extra work since all the documents have > > to be evaluated anyway. > > > > I'm not sure what you mean by statistics for the whole index. I suspect > > you're wondering if the scores reflect all the documents. But you don't > > care because scores are not relevant between different queries, and > > if they are calculated only within the query you're running, all the > > documents returned have scores that rank them relative to each other. > > > > Best > > Erick > > > > On Thu, May 14, 2009 at 9:16 AM, liat oren <oren.l...@gmail.com> wrote: > > > > > Yes, I have a pre-defined list of documents that I care about. > > > Then I can do the search on these, but it will take the statictics of > the > > > whole index, right? > > > > > > > > > > > > > > > 2009/5/14 Erick Erickson <erickerick...@gmail.com> > > > > > > > I don't know if I'm understanding what you want, but if you havea > > > > pre-defined list of documents, couldn't you form a Filter? Then > > > > your results would only be the documents you care about. > > > > > > > > If this is irrelevant, perhaps you could explain a bit more about > > > > the problem you're trying to solve. > > > > > > > > Best > > > > Erick > > > > > > > > On Thu, May 14, 2009 at 5:03 AM, liat oren <oren.l...@gmail.com> > > wrote: > > > > > > > > > Hi, > > > > > > > > > > I have a big index and I want to get for a specific search only the > > > > grades > > > > > of a list of documents. > > > > > Is there a better way to get this score than looping on all the > > > reasults > > > > > set? > > > > > > > > > > Thanks, > > > > > Liat > > > > > > > > > > > > > > >
