On Wed, Feb 15, 2012 at 11:46 AM, Uwe Schindler <u...@thetaphi.de> wrote: > Scores are only compatible if the query is the same, which is not the case > for you. > So you cannot merge hits from different queries.
So I guess in the case where the different query parsers happen to generate the same query, it's safe to do then. This is actually much better than I was expecting. :) Which leaves the (hopefully rarer) case of them generating actually-different queries. I assume the cause for the incompatibility is something like this: User's query: "cats" Suppose query parser 1 converts to "text:cats" Suppose query parser 2 converts to "text:cat" Because query parser 2 is converting "cat" -> "cat" as well as "cats" -> "cat", this affects the doc frequency of "cat", which as a result affects the score. But of course we want all the results in one list at the end, so we have to merge it *somehow*. So I was wondering that if the score by itself is not enough, maybe there is some way to weight it so that it can be merged again. TX --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
