Hi, I actually don't follow how field collapsing helps with autocompletion...?
Over at http://search-lucene.com we eat our own autocomplete dog food: http://sematext.com/products/autocomplete/index.html . Tasty stuff. Otis ---- Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch Lucene ecosystem search :: http://search-lucene.com/ ----- Original Message ---- > From: Kai Schlamp <schl...@gmx.de> > To: solr-user@lucene.apache.org > Sent: Mon, March 14, 2011 11:52:48 PM > Subject: Re: Different options for autocomplete/autosuggestion > > @Robert: That sounds interesting and very flexible, but also like a > lot of work. This approach also doesn't seem to allow querying Solr > directly by using Ajax ... one of the big benefits in my opinion when > using Solr. > @Bill: There are some things I don't like about the Suggester > component. It doesn't seem to allow infix searches (at least it is not > mentioned in the Wiki or elsewhere). It also uses a separate index > that has to be rebuild independently of the main index. And it doesn't > support any filter queries. > > The Lucid Imagination blog also describes a further autosuggest > approach >(http://www.lucidimagination.com/blog/2009/09/08/auto-suggest-from-popular-queries-using-edgengrams/). > > The disadvantage here is that the source documents must have distinct > fields (resp. the dih selects must provide distinct data). Otherwise > duplications would come up in the Solr query result, cause of the > document nature of Solr. > > In my opinion field collapsing seems to be most promising for a full > featured autosuggestion solution. Unfortunately it is not available > for Solr 1.4.x or 3.x (I tried patching those branches several times > without success). > > 2011/3/15 Bill Bell <billnb...@gmail.com>: > > http://lucidworks.lucidimagination.com/display/LWEUG/Spell+Checking+and+Aut > > omatic+Completion+of+User+Queries > > > > For Auto-Complete, find the following section in the solrconfig.xml file > > for the collection: > > <!-- Auto-Complete component --> > > <searchComponent name="autocomplete" class="solr.SpellCheckComponent"> > > <lst name="spellchecker"> > > <str name="name">autocomplete</str> > > <str > > name="classname">org.apache.solr.spelling.suggest.Suggester</str> > > <str > > name="lookupImpl">org.apache.solr.spelling.suggest.jaspell.JaspellLookup</s > > tr> > > <str name="field">autocomplete</str> > > <str name="buildOnCommit">true</str> > > <!-- > > <str name="sourceLocation">american-english</str> > > --> > > </lst> > > > > > > > > > > On 3/14/11 8:16 PM, "Andy" <angelf...@yahoo.com> wrote: > > > >>Can you provide more details? Or a link? > >> > >>--- On Mon, 3/14/11, Bill Bell <billnb...@gmail.com> wrote: > >> > >>> See how Lucid Enterprise does it... A > >>> bit differently. > >>> > >>> On 3/14/11 12:14 AM, "Kai Schlamp" <kai.schl...@googlemail.com> > >>> wrote: > >>> > >>> >Hi. > >>> > > >>> >There seems to be several options for implementing an > >>> >autocomplete/autosuggestions feature with Solr. I am > >>> trying to > >>> >summarize those possibilities together with their > >>> advantages and > >>> >disadvantages. It would be really nice to read some of > >>> your opinions. > >>> > > >>> >* Using N-Gram filter + text field query > >>> >+ available in stable 1.4.x > >>> >+ results can be boosted > >>> >+ sorted by best matches > >>> >- may return duplicate results > >>> > > >>> >* Facets > >>> >+ available in stable 1.4.x > >>> >+ no duplicate entries > >>> >- sorted by count > >>> >- may need an extra N-Gram field for infix queries > >>> > > >>> >* Terms > >>> >+ available in stable 1.4.x > >>> >+ infix query by using regex in 3.x > >>> >- only prefix query in 1.4.x > >>> >- regexp may be slow (just a guess) > >>> > > >>> >* Suggestions > >>> >? Did not try that yet. Does it allow infix queries? > >>> > > >>> >* Field Collapsing > >>> >+ no duplications > >>> >- only available in 4.x branch > >>> >? Does it work together with highlighting? That would > >>> be a big plus. > >>> > > >>> >What are your experiences regarding > >>> autocomplete/autosuggestion with > >>> >Solr? Any additions, suggestions or corrections? What > >>> do you prefer? > >>> > > >>> >Kai > >>> > >>> > >>> > >> > >> > >> > > > > > > > > > > -- > Dr. med. Kai Schlamp > Am Fort Elisabeth 17 > 55131 Mainz > Germany > Phone +49-177-7402778 > Email: schl...@gmx.de >
