Solr 4.0 Functions in FL: performance?
Hello, when I put a function in the Field List, when are field values calculated and on wich docs? Are values calculated over the whole set of docs? Only over the resulting set of doc? Or, better, over the docs actually serialized in results. i.e. I have 1000 docs in the index, 100 docs matching my query, 10 docs in my result response because i put &rows=10 in my query. I put fl=sum(fieldA,fieldB) in my query. How many times is the sum of fieldA+fieldB executed? thx, c.
Re: Solr 4.0 Functions in FL: performance?
Whoa that's cool! It can simplify mani front-end calculations. - obviously I don't want to use it to make a simple sum :) Thanks! c. 2013/8/30 Andrea Gazzarini > Hi, > not actually sure I got the point but > > > Are values calculated over the whole set of docs? Only over the resulting >> > set of doc? Or, better, over the docs actually serialized in results. > > The third: a function is like a "virtual" field computed in real-time > associated with each (returned) doc. > > > i.e. I have 1000 docs in the index, 100 docs matching my query, 10 docs in >> > my result response because i put &rows=10 in my query. > I put fl=sum(fieldA,fieldB) in my query. > How many times is the sum of fieldA+fieldB executed? > > 10 > > Best, > Andrea > > > On 08/30/2013 09:59 AM, Cristian Cascetta wrote: > >> Hello, >> >> when I put a function in the Field List, when are field values calculated >> and on wich docs? >> >> Are values calculated over the whole set of docs? Only over the resulting >> set of doc? Or, better, over the docs actually serialized in results. >> >> i.e. I have 1000 docs in the index, 100 docs matching my query, 10 docs in >> my result response because i put &rows=10 in my query. >> >> I put fl=sum(fieldA,fieldB) in my query. >> >> How many times is the sum of fieldA+fieldB executed? >> >> thx, >> c. >> >> >
Re: Solr french search optimisation
Hello, I think you're confusing three different things: 1) schema and fields definition is for precision/recall: treating differently a field means different search results and results ranking 2) the "pomppe a chaler" problem is more a spellchecking problem http://wiki.apache.org/solr/SpellCheckComponent 3) "solère" and "solaire" is a phonetic search problem http://wiki.apache.org/solr/AnalyzersTokenizersTokenFilters#solr.PhoneticFilterFactory Hope this helps a little, cristian 2013/5/23 It-forum > Hello again, > > Is any one could help me, plase > > David > > Le 22/05/2013 18:09, It-forum a écrit : > > Hello to all, >> >> I'm trying to setup solr 4.2 to index and search into french content. >> >> I defined a special fieldtype for french content : >> >> > positionIncrementGap="100"> >> >> > mapping="mapping-**ISOLatin1Accent.txt"/> >> >> > generateWordParts="1" generateNumberParts="1" catenateWords="1" >> catenateNumbers="1" catenateAll="0" splitOnCaseChange="1"/> >> >> > language="French" protected="protwords.txt"/> >> >> >> >> > mapping="mapping-**ISOLatin1Accent.txt"/> >> >> > generateWordParts="1" generateNumberParts="1" catenateWords="0" >> catenateNumbers="0" catenateAll="0" splitOnCaseChange="1"/> >> >> > language="French" protected="protwords.txt"/> >> >> >> >> >> unfortunately, this field does not behave as I wish. >> >> I'd like to be able to get results from unwell spelled word. >> >> IE : I wish to get the same result typing "Pompe à chaleur" than typing >> "pomppe a chaler" or with "solère" and "solaire" >> >> I'm do not find the right way to create a fieldtype to reach this aim. >> >> thanks in advance for your help, do not hesitate for more information if >> need. >> >> Regards >> >> David >> >> >> >
Re: Solr french search optimisation
> Could you clarify few more thinks : > > - SpellchekComponent and Phonetic, should be use while indexing or only > while querying ? > SpellCheck: you can define a specific field for spellchecking (in this sense it's a query/schema time) or you can create a specific vocabulary for spell-checking. I strongly suggest to go through documentation http://wiki.apache.org/solr/SpellCheckComponent for this component, every time I used it I've had the need to customize and adapt configuration. > > - Does spellcheck component return only the right spelling, or is it used > to search into result? > I'm not sure, please check the documentation, but I remeber that you can configure it to directly re-execute the spell-corrected query AND show some alternatives/suggestions to the user (obviously this is a display/frontend choice) > > - If i want to solve Spelling, Phonetic, stemming problem in french > language. Can I use only one field or should I use several with different > filters ? > I don't think it's possible to use only one field, in my experience I can suggest you to use multiple fields for multiple scopes, if you're scared by the index-size remember that fields that are indexed and NOT stored don't grow your index so much. Set as stored only fields you need to display to end-user.
