Weighting database fields
Hi, What is the best way to get Lucene to assign weightings to certain fields from a database? For example, the 'name' field should be weighted higher than the 'description' field. Thanks, John. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Weighting database fields
On Jul 21, 2004, at 10:09 AM, Anson Lau wrote: Apply boost factor to fields when you do a lucene search. Or... set the boost on the Field during indexing. Erik Anson -Original Message- From: John Patterson [mailto:[EMAIL PROTECTED] Sent: Thursday, July 22, 2004 12:07 AM To: [EMAIL PROTECTED] Subject: Weighting database fields Hi, What is the best way to get Lucene to assign weightings to certain fields from a database? For example, the 'name' field should be weighted higher than the 'description' field. Thanks, John. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Weighting database fields
Thanks, that was what I was after! - Original Message - From: Erik Hatcher [EMAIL PROTECTED] To: Lucene Users List [EMAIL PROTECTED] Sent: Wednesday, July 21, 2004 9:52 PM Subject: Re: Weighting database fields On Jul 21, 2004, at 10:09 AM, Anson Lau wrote: Apply boost factor to fields when you do a lucene search. Or... set the boost on the Field during indexing. Erik Anson -Original Message- From: John Patterson [mailto:[EMAIL PROTECTED] Sent: Thursday, July 22, 2004 12:07 AM To: [EMAIL PROTECTED] Subject: Weighting database fields Hi, What is the best way to get Lucene to assign weightings to certain fields from a database? For example, the 'name' field should be weighted higher than the 'description' field. Thanks, John. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Weighting database fields
Erik, Is there any benefit to set the boost during indexing rather than set it during query? I usually set it when doing a query because you can change that boost values easily without having to re-index. Thanks, ANson -Original Message- From: Erik Hatcher [mailto:[EMAIL PROTECTED] Sent: Thursday, July 22, 2004 12:52 AM To: Lucene Users List Subject: Re: Weighting database fields On Jul 21, 2004, at 10:09 AM, Anson Lau wrote: Apply boost factor to fields when you do a lucene search. Or... set the boost on the Field during indexing. Erik Anson -Original Message- From: John Patterson [mailto:[EMAIL PROTECTED] Sent: Thursday, July 22, 2004 12:07 AM To: [EMAIL PROTECTED] Subject: Weighting database fields Hi, What is the best way to get Lucene to assign weightings to certain fields from a database? For example, the 'name' field should be weighted higher than the 'description' field. Thanks, John. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Weighting database fields
On Jul 21, 2004, at 11:40 AM, Anson Lau wrote: Is there any benefit to set the boost during indexing rather than set it during query? It allows setting each document differently. For example, TheServerSide is using field-level boosts at index time to control ordering by date, such that newer articles come up first. This could not be done at query time since each document gets a different field boost. Erik - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Weighting database fields
Hi Erik On Jul 21, 2004, at 11:40 AM, Anson Lau wrote: Is there any benefit to set the boost during indexing rather than set it during query? It allows setting each document differently. For example, TheServerSide is using field-level boosts at index time to control ordering by date, such that newer articles come up first. This could not be done at query time since each document gets a different field boost. If some field have set a boots value in index time, and when in search time the query have another boost value for this field, what happens? which value is used for boost? Bye, Ernesto. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.725 / Virus Database: 480 - Release Date: 19/07/2004 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Weighting database fields
Ernesto De Santis wrote: If some field have set a boots value in index time, and when in search time the query have another boost value for this field, what happens? which value is used for boost? The two boosts are both multiplied into the score. Doug - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
