positionIncrementGap - what is its value meaning?
Hi all, While I changing the default schema.xml, I found this attribute where defined the analyzer...seems it will add some space when multiple fields appear in document, but what is its effect appear in query and what is the values mean here? Thank you, Vinci -- View this message in context: http://www.nabble.com/positionIncrementGap---what-is-its-value-meaning--tp16296677p16296677.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: positionIncrementGap - what is its value meaning?
On Mar 26, 2008, at 3:11 AM, Vinci wrote: While I changing the default schema.xml, I found this attribute where defined the analyzer...seems it will add some space when multiple fields appear in document, but what is its effect appear in query and what is the values mean here? Suppose you add two tokenized authors for a document: author: Billy Bob author: Thorton Gospodnetic Without a position gap, the phrase query of Bob Thorton would match! However, with a position increment gap defined you can avoid that match. The value you set that gap to depends on whether you'll be using sloppy phrase queries, and how sloppy they'll be and whether you desire matching across field instances. Under the covers, remember, that a tokenized field is just a string of terms, even with multiple field instances. Erik
Re: positionIncrementGap - what is its value meaning?
Hi Erik, Thank you for your help. This is useful. Some follow up questions, Erik Hatcher wrote: ..The value you set that gap to depends on whether you'll be using sloppy phrase queries, and how sloppy they'll be and whether you desire matching across field instances. 1. If I doesn't care the sloppy queries, I just set a number larger than 0 and then it will work? 2. If the sloppy queries use a range larger than the gap, what will happen? Thank you, Vinci -- View this message in context: http://www.nabble.com/positionIncrementGap---what-is-its-value-meaning--tp16296677p16320265.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: positionIncrementGap - what is its value meaning?
On Mar 26, 2008, at 10:15 PM, Vinci wrote: Erik Hatcher wrote: ..The value you set that gap to depends on whether you'll be using sloppy phrase queries, and how sloppy they'll be and whether you desire matching across field instances. 1. If I doesn't care the sloppy queries, I just set a number larger than 0 and then it will work? Yes. 2. If the sloppy queries use a range larger than the gap, what will happen? Then you can match across field instance boundaries. Erik
