Re: using BoostingTermQuery
I'm no QueryParser expert, but I would probably start w/ the default query parser in Solr (LuceneQParser), and then progress a bit to the DisMax one. I'd ask specific questions based on what you see there. If you get far enough along, you may consider asking for help on the java-user list as well. Thanks - I think I've got it working now. I ended up subclassing QueryParser and overriding newTermQuery() to create a BoostingTermQuery instead of a plain ol' TermQuery. Seems to work. Kindly let me know where and how to configure the overridden query parser in solr -Ayyanar -- View this message in context: http://www.nabble.com/using-BoostingTermQuery-tp19637123p21011626.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: using BoostingTermQuery
In the solrconfig.xml (scroll all the way to the bottom, and I believe the example has some commented out) On Dec 15, 2008, at 5:45 AM, ayyanar wrote: I'm no QueryParser expert, but I would probably start w/ the default query parser in Solr (LuceneQParser), and then progress a bit to the DisMax one. I'd ask specific questions based on what you see there. If you get far enough along, you may consider asking for help on the java-user list as well. Thanks - I think I've got it working now. I ended up subclassing QueryParser and overriding newTermQuery() to create a BoostingTermQuery instead of a plain ol' TermQuery. Seems to work. Kindly let me know where and how to configure the overridden query parser in solr -Ayyanar -- View this message in context: http://www.nabble.com/using-BoostingTermQuery-tp19637123p21011626.html Sent from the Solr - User mailing list archive at Nabble.com. -- Grant Ingersoll Lucene Helpful Hints: http://wiki.apache.org/lucene-java/BasicsOfPerformance http://wiki.apache.org/lucene-java/LuceneFAQ
RE: using BoostingTermQuery
I'm no QueryParser expert, but I would probably start w/ the default
query parser in Solr (LuceneQParser), and then progress a bit to the
DisMax one. I'd ask specific questions based on what you see there.
If you get far enough along, you may consider asking for help on the
java-user list as well.
Thanks - I think I've got it working now. I ended up subclassing QueryParser
and overriding newTermQuery() to create a BoostingTermQuery instead of a plain
ol' TermQuery. Seems to work.
Yup - I'm pretty sure I have that side figured out. My input
contains terms marked up with a score (ie 'software?7') I just
needed to create a TokenFilter that parses out the suffix and sets
the Payload on the token.
Cool. Patch?
Not sure how valuable it is - all I did was create a new subclass of
TokenFilter. Here's the code fwiw:
public class ScorePayloadFilter extends TokenFilter {
protected ScorePayloadFilter(TokenStream input) {
super(input);
}
public Token next(Token in) throws IOException {
Token nextToken = input.next(in);
if ( nextToken != null )
{
char[] buf = nextToken.termBuffer();
int termLen = nextToken.termLength();
int posn = -1;
for ( int i=0; i termLen; i++ )
if ( buf[i] == '?' )
posn = i;
if ( posn 0 )
{
int scorepos = posn + 1;
String score = new String(buf, scorepos,
termLen - scorepos);
Integer scoreInt = new Integer(score);
Payload payload = new Payload();
byte[] payloadBytes = new byte[4];
payload.setData(PayloadHelper.encodeInt(scoreInt, payloadBytes, 0));
nextToken.setPayload(payload);
nextToken.setTermLength(posn);
}
}
return nextToken;
}
}
Thanks again for the help!
-Ken
Re: using BoostingTermQuery
At this point, it's roll your own. I'd love to see the BTQ in Solr (and Spans!), but I wonder if it makes sense w/o better indexing side support. I assume you are rolling your own Analyzer, right? Spans and payloads are this huge untapped area for better search! On Sep 23, 2008, at 5:12 PM, Ensdorf Ken wrote: Hi- I'm new to Solr, and I'm trying to figure out the best way to configure it to use BoostingTermQuery in the scoring mechanism. Do I need to create a custom query parser? All I want is the default parser behavior except to get the custom term boost from the Payload data. Thanks! -Ken -- Grant Ingersoll http://www.lucidimagination.com Lucene Helpful Hints: http://wiki.apache.org/lucene-java/BasicsOfPerformance http://wiki.apache.org/lucene-java/LuceneFAQ
Re: using BoostingTermQuery
It may be too early to say this but I'll say it anyway :) There should be a juicy case study that includes payloads, BTQ, and Spans in the upcoming Lucene in Action 2. I can't wait to see it, personally. Otis -- Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch - Original Message From: Grant Ingersoll [EMAIL PROTECTED] To: solr-user@lucene.apache.org Sent: Tuesday, September 23, 2008 5:29:05 PM Subject: Re: using BoostingTermQuery At this point, it's roll your own. I'd love to see the BTQ in Solr (and Spans!), but I wonder if it makes sense w/o better indexing side support. I assume you are rolling your own Analyzer, right? Spans and payloads are this huge untapped area for better search! On Sep 23, 2008, at 5:12 PM, Ensdorf Ken wrote: Hi- I'm new to Solr, and I'm trying to figure out the best way to configure it to use BoostingTermQuery in the scoring mechanism. Do I need to create a custom query parser? All I want is the default parser behavior except to get the custom term boost from the Payload data. Thanks! -Ken -- Grant Ingersoll http://www.lucidimagination.com Lucene Helpful Hints: http://wiki.apache.org/lucene-java/BasicsOfPerformance http://wiki.apache.org/lucene-java/LuceneFAQ
RE: using BoostingTermQuery
At this point, it's roll your own. That's where I'm getting bogged down - I'm confused by the various queryparser classes in lucene and solr and I'm not sure exactly what I need to override. Do you know of an example of something similar to what I'm doing that I could use as a reference? I'd love to see the BTQ in Solr (and Spans!), but I wonder if it makes sense w/o better indexing side support. I assume you are rolling your own Analyzer, right? Yup - I'm pretty sure I have that side figured out. My input contains terms marked up with a score (ie 'software?7') I just needed to create a TokenFilter that parses out the suffix and sets the Payload on the token. Spans and payloads are this huge untapped area for better search! Completely agree - we do a lot with keyword searching, and we use this type of thing in our existing search implementation. Thanks for the quick response! On Sep 23, 2008, at 5:12 PM, Ensdorf Ken wrote: Hi- I'm new to Solr, and I'm trying to figure out the best way to configure it to use BoostingTermQuery in the scoring mechanism. Do I need to create a custom query parser? All I want is the default parser behavior except to get the custom term boost from the Payload data. Thanks! -Ken -- Grant Ingersoll http://www.lucidimagination.com Lucene Helpful Hints: http://wiki.apache.org/lucene-java/BasicsOfPerformance http://wiki.apache.org/lucene-java/LuceneFAQ
Re: using BoostingTermQuery
On Sep 23, 2008, at 5:39 PM, Ensdorf Ken wrote: At this point, it's roll your own. That's where I'm getting bogged down - I'm confused by the various queryparser classes in lucene and solr and I'm not sure exactly what I need to override. Do you know of an example of something similar to what I'm doing that I could use as a reference? I'm no QueryParser expert, but I would probably start w/ the default query parser in Solr (LuceneQParser), and then progress a bit to the DisMax one. I'd ask specific questions based on what you see there. If you get far enough along, you may consider asking for help on the java-user list as well. I'd love to see the BTQ in Solr (and Spans!), but I wonder if it makes sense w/o better indexing side support. I assume you are rolling your own Analyzer, right? Yup - I'm pretty sure I have that side figured out. My input contains terms marked up with a score (ie 'software?7') I just needed to create a TokenFilter that parses out the suffix and sets the Payload on the token. Cool. Patch? Spans and payloads are this huge untapped area for better search! Completely agree - we do a lot with keyword searching, and we use this type of thing in our existing search implementation. Thanks for the quick response! On Sep 23, 2008, at 5:12 PM, Ensdorf Ken wrote: Hi- I'm new to Solr, and I'm trying to figure out the best way to configure it to use BoostingTermQuery in the scoring mechanism. Do I need to create a custom query parser? All I want is the default parser behavior except to get the custom term boost from the Payload data. Thanks! -Ken -- Grant Ingersoll http://www.lucidimagination.com Lucene Helpful Hints: http://wiki.apache.org/lucene-java/BasicsOfPerformance http://wiki.apache.org/lucene-java/LuceneFAQ -- Grant Ingersoll http://www.lucidimagination.com Lucene Helpful Hints: http://wiki.apache.org/lucene-java/BasicsOfPerformance http://wiki.apache.org/lucene-java/LuceneFAQ
