Thanks again.
>
>
>
>
> - Original Message -
> From: Erick Erickson
> To: java-user@lucene.apache.org; sol myr
> Cc:
> Sent: Sunday, October 23, 2011 7:18 PM
> Subject: Re: performance question - number of documents
>
> "Why would it matter...top 5 mat
Thanks again.
- Original Message -
From: Erick Erickson
To: java-user@lucene.apache.org; sol myr
Cc:
Sent: Sunday, October 23, 2011 7:18 PM
Subject: Re: performance question - number of documents
"Why would it matter...top 5 matches" Because Lucene has to calculate
the
This may not be directly relevant to Lucene, but I wanted to learn:
How does a web search engine do something like this.
Do they also "score every matching document on every query" OR
do they pick a subset first based on some static/offlline ranking criteria
then do what Lucene does OR
do they sea
"Why would it matter...top 5 matches" Because Lucene has to calculate
the score of all documents in order to insure that it returns those 5 documents.
What if the very last document scored was the most relevant?
Best
Erick
On Sun, Oct 23, 2011 at 3:06 PM, sol myr wrote:
> Hi,
>
> We've noticed s
Hi,
We've noticed some Lucene performance phenomenon, and would appreciate an
explanation from anyone familiar with Lucene internals
(I know Lucene as a user, but haven't looked under its hood).
We have a Lucene index of about 30 million records.
We ran 2 queries: "AND" and "OR" ("+john +doe" v
