yes david you must use the "omitNorms=true" for great performance
Thanks Aman Tandon On Tue, Apr 8, 2014 at 5:36 PM, Ahmet Arslan <iori...@yahoo.com> wrote: > Hi David, > > omitNorms="true" will cause additional performance gains too. > https://wiki.apache.org/solr/SolrPerformanceFactors#indexed_fields > > To globally disable length norm, one can create a custom similarity and > register it as a default similarity though. > > > > On Tuesday, April 8, 2014 2:59 PM, David Santamauro < > david.santama...@gmail.com> wrote: > > Is there any general setting that removes this "punishment" or must > omitNorms=false be part of every field definition? > > > > On 4/8/2014 7:04 AM, Ahmet Arslan wrote: > > Hi, > > > > length normal is computed for every document at index time. I think it > is 1/sqrt(number of terms). Please see section 6. norm(t,d) at > > > > > https://lucene.apache.org/core/4_7_0/core/org/apache/lucene/search/similarities/TFIDFSimilarity.html > > > > > > If you don't care about length normalisation, you can set omitNorms=true > in field declarations. > http://wiki.apache.org/solr/SchemaXml#Common_field_options > > > > > > > > On Tuesday, April 8, 2014 1:57 PM, John Nielsen <j...@mcb.dk> wrote: > > Hi, > > > > I couldn't find any occurrence of SpanFirstQuery in either the schema.xml > > or solrconfig.xml files. > > > > This is the query i used with debug=results. > > http://pastebin.com/bWzUkjKz > > > > And here is the answer. > > http://pastebin.com/nCXFcuky > > > > I am not sure what I am supposed to be looking for. > > > > > > > > On Tue, Apr 8, 2014 at 11:34 AM, Markus Jelsma > > <markus.jel...@openindex.io>wrote: > > > >> Hi - the thing you describe is possible when your set up uses > >> SpanFirstQuery. But to be sure what's going on you should post the debug > >> output. > >> > >> -----Original message----- > >>> From:John Nielsen <j...@mcb.dk> > >>> Sent: Tuesday 8th April 2014 11:03 > >>> To: solr-user@lucene.apache.org > >>> Subject: Strange relevance scoring > >>> > >>> Hi, > >>> > >>> We are seeing a strange phenomenon with our Solr setup which I have > been > >>> unable to answer. > >>> > >>> My Google-fu is clearly not up to the task, so I am trying here. > >>> > >>> It appears that if i do a freetext search for a single word, say > >> "modellering" > >>> on a text field, the scoring is massively boosted if the first word of > >> the > >>> text field is a hit. > >>> > >>> For instance if there is only one occurrence of the word "modellering" > in > >>> the text field and that occurrence is the first word of the text, then > >> that > >>> document gets a higher relevancy than if the word "modelling" occurs 5 > >>> times in the text and the first word of the text is any other word. > >>> > >>> Is this normal behavior? Is special attention paid to the first word > in a > >>> text field? I would think that the latter case would get the highest > >> score. > >>> > >>> > >>> -- > >>> Med venlig hilsen / Best regards > >>> > >>> *John Nielsen* > >>> Programmer > >>> > >>> > >>> > >>> *MCB A/S* > >>> Enghaven 15 > >>> DK-7500 Holstebro > >>> > >>> Kundeservice: +45 9610 2824 > >>> p...@mcb.dk > >>> www.mcb.dk > > > >>> > >> > > > > > > > >
