Re: Different score for the same documents

2009-11-02 Thread Erick Erickson
That's exactly the question. If all 16 documents have exactly the same score, then the internal tie-breaking is your answer. They would also all have strictly increasing doc IDs. But I'd check to see the scores before accepting this explanation because I find it unlikely that all 16 docs have iden

Re: Different score for the same documents

2009-11-02 Thread kenji tsuruoka
Thank you Erick. What you mentioned is right. The two same documents were shown at the 3rd and 18th. So do you mean documents between the 3rd and the 18th (at least) in the Lucene results have the same score? Cheers, K On Nov 2, 2009, at 9:59 PM, Erick Erickson wrote: What were their scor

Re: Different score for the same documents

2009-11-02 Thread Erick Erickson
What were their scores? I'm assuming that by "rank" you mean the order in which the documents were returned, not the raw Lucene score. Lucene uses the insertion order to break ties. That is, two documents with the same score will the appear in the order of their (internal) Lucene doc ID. So is it