Hi, Chris, Thanks. Does this page provides the right equation for span query based similarity? http://xtf.sourceforge.net/docs/underHood.html#Scoring
Jianhan -----Original Message----- From: Chris Hostetter [mailto:[EMAIL PROTECTED] Sent: 08 January 2007 08:20 To: java-user@lucene.apache.org Subject: Re: Similarity for Span and Boolean query : The equation for similarity is given on this web page: : http://lucene.apache.org/java/docs/api/org/apache/lucene/search/Similari : ty.html : : I would like to know what are the equations for similarity if the query : is a span or boolean query. That equation does cover BooleanQueries -- the "coord" factor is a BooleanQuery concept -- strictly speaking that equation describes the basics of a boolean query containing multiple term queries. beyond that, the calculations can get a little hard to discribe in generic equations -- the best way to understand the score calculations for any of the other query types (including the Span queries) is to look at the "Explanation.toString()" output for a query on a matching document -- and consult the code for the corisponding Scorer class to see if there are any special cases you might not be noticing becuase of the particular query/doc explanation you are looking at (ie: query boosts, the coord factor on a boolean query, etc...) -Hoss --------------------------------------------------------------------- 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]
