Thanks for your responses. Best, Modassar
On Wed, Jan 6, 2016 at 9:27 PM, Jack Krupansky <jack.krupan...@gmail.com> wrote: > The motivation for the constant-score rewrite is simply performance. As per > the Javadoc: > > "*This method is faster than the BooleanQuery rewrite methods when the > number of matched terms or matched documents is non-trivial. Also, it will > never hit an errant BooleanQuery.TooManyClauses exception.*" > > So that's a second reason - to avoid the max clause count limitation of > Boolean Query. > > See: > > https://lucene.apache.org/core/5_4_0/core/org/apache/lucene/search/MultiTermQuery.html#CONSTANT_SCORE_REWRITE > > https://lucene.apache.org/core/5_4_0/core/org/apache/lucene/search/WildcardQuery.html > > > -- Jack Krupansky > > On Wed, Jan 6, 2016 at 6:07 AM, Modassar Ather <modather1...@gmail.com> > wrote: > > > Please help me understand why queries like wildcard, prefix and few > others > > are re-written into constant score query? > > Why the scoring factors are not taken into consideration in such queries? > > > > Please correct me if I am wrong that this behavior is per the query type > > irrespective of the parser used. > > > > Thanks, > > Modassar > > > > On Wed, Jan 6, 2016 at 12:56 PM, Modassar Ather <modather1...@gmail.com> > > wrote: > > > > > Thanks for your response Ahmet. > > > > > > Best, > > > Modassar > > > > > > On Mon, Jan 4, 2016 at 5:07 PM, Ahmet Arslan <iori...@yahoo.com.invalid > > > > > wrote: > > > > > >> Hi, > > >> > > >> I think wildcard queries fl:networ* are re-written into Constant Score > > >> Query. > > >> fl=*,score should returns same score for all documents that are > > retrieved. > > >> > > >> Ahmet > > >> > > >> > > >> > > >> On Monday, January 4, 2016 12:22 PM, Modassar Ather < > > >> modather1...@gmail.com> wrote: > > >> Hi, > > >> > > >> Kindly help me understand how will relevance ranking differ int > > following > > >> searches. > > >> > > >> query : fl:network > > >> query : fl:networ* > > >> > > >> What I am observing that the results returned are different in both of > > >> them > > >> in a way that the top documents returned for q=fl:network is not > present > > >> in > > >> the top results of q=fl:networ*. > > >> For example for q=fl:network I am getting top documents having around > 20 > > >> occurrence of network whereas the top result of q=fl:networ* has only > > >> couple of occurrence of network. > > >> I am aware of the underlying normalization process participation in > > >> relevance ranking of documents but not able to understand such a > > >> difference > > >> in the ranking of result for the queries. > > >> > > >> Thanks, > > >> Modassar > > >> > > > > > > > > >
