Re: What is omitNorms
thanks for the link, i got lot information from this document. Can u please tell me how can i verify omitNorms effect in my document indexing or searching. - Romi -- View this message in context: http://lucene.472066.n3.nabble.com/What-is-omitNorms-tp2987547p2987649.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: What is omitNorms
When you say omitnorms=true for any fields it means SOLR will not store norms . AFAIK , if you do not store these norms then your index size would be smaller and will take less memory . You could safely omit these norms for smaller fields . i.e your indexing time is more. So if you do not store norms you save the memory Norms are used to boosts and field length normalization during indexing time so that short document has higher score Turning the norms on/off may depend on your indexing size and implementations I hope this helps .. thanks On Thu, May 26, 2011 at 11:48 AM, Romi romijain3...@gmail.com wrote: thanks for the link, i got lot information from this document. Can u please tell me how can i verify omitNorms effect in my document indexing or searching. - Romi -- View this message in context: http://lucene.472066.n3.nabble.com/What-is-omitNorms-tp2987547p2987649.html Sent from the Solr - User mailing list archive at Nabble.com. -- Chandan Tamrakar * *
Re: What is omitNorms
Norms are used to boosts and field length normalization during indexing time so that short document has higher score How it is that if i set omitnorms=false for a field then short documents have higher score. i could not get this point , might be because i could not find any running example for this.would you please explain. - Romi -- View this message in context: http://lucene.472066.n3.nabble.com/What-is-omitNorms-tp2987547p2987799.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: What is omitNorms
omitNorms=true on a field will have following effect: 1. length normalization will not work on the specific field-- Which means matching documents with shorter length will not be preferred/boost over matching documents with greater length for the specific field, at search time. 2. Index time boosting will not be available on the field. If, both the above cases are not required by you, then, you can set omitNorms=true for the specific fields. This has an added advantage, it will save you some(or a lot of) RAM also, since, with omitNorms=false on total N fields in the index will require RAM of size: Total docs in index * 1 byte * N -- View this message in context: http://lucene.472066.n3.nabble.com/What-is-omitNorms-tp2987547p2988124.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: What is omitNorms
What would be the default value for omitNorms? --- Default value is false Is general advise to ignore this and set the value explicitly? --- Depends on your requirement. Do this on field-per-field basis. Set to false on fields where you want the norms, or, set to true on fields where you want to omit the norms -- View this message in context: http://lucene.472066.n3.nabble.com/What-is-omitNorms-tp2987547p2988714.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: What is omitNorms
Hi pravesh, Thanks for the quick reply. --Dmitry On Thu, May 26, 2011 at 4:27 PM, pravesh suyalprav...@yahoo.com wrote: What would be the default value for omitNorms? --- Default value is false Is general advise to ignore this and set the value explicitly? --- Depends on your requirement. Do this on field-per-field basis. Set to false on fields where you want the norms, or, set to true on fields where you want to omit the norms -- View this message in context: http://lucene.472066.n3.nabble.com/What-is-omitNorms-tp2987547p2988714.html Sent from the Solr - User mailing list archive at Nabble.com. -- Regards, Dmitry Kan
Re: What is omitNorms
and i also wanted to know what is difference if i set omitNorms in fieldType or if i set it in field. - Romi -- View this message in context: http://lucene.472066.n3.nabble.com/What-is-omitNorms-tp2987547p2987562.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: What is omitNorms
This is an advance option. pls see the details on following link http://www.lucidimagination.com/Community/Hear-from-the-Experts/Articles/Scaling-Lucene-and-Solr#d0e71 On Thu, May 26, 2011 at 11:12 AM, Romi romijain3...@gmail.com wrote: and i also wanted to know what is difference if i set omitNorms in fieldType or if i set it in field. - Romi -- View this message in context: http://lucene.472066.n3.nabble.com/What-is-omitNorms-tp2987547p2987562.html Sent from the Solr - User mailing list archive at Nabble.com. -- Chandan Tamrakar * *
