I am doing this very differently. We are on solr 1.4.0 and I accomplish the collapsing in my wrapper layer. I have written a layer of code around SOLR, an indexer on one end and a search service wrapping solrs on the other end. I manually collapse the field in my code. I keep both a collapsed and uncollapsed version of the phrase in my index, the uncollapsed is the only one stored for retrieval btw. I do this on both ends so I have complete control here... works well! Different than a patch of course tho.
-----Original Message----- From: kai.schl...@googlemail.com [mailto:kai.schl...@googlemail.com] On Behalf Of Kai Schlamp Sent: Monday, March 14, 2011 2:12 PM To: solr-user@lucene.apache.org Subject: Re: Different options for autocomplete/autosuggestion Robert, thanks for your answer. What Solr version do you use? 4.0? As mentioned in my other post here I tried to patch 1.4 for using field collapsing, but couldn't get it to work (compiled fine, but collapsed parameters seems to be completely ignored). 2011/3/14 Robert Petersen <rober...@buy.com>: > I like field collapsing because that way my suggestions gives phrase > results (ie the suggestion starts with what the user has typed so far) > and thus I limit suggestions to be in the order of the words typed. I > think that looks better for our retail oriented site. I populate the > index with previous user queries. I just put wildcards on the end of > the collapsed version what the user has typed so far. It is very fast. > I make suggestions for every keystroke as a user types in his query on > our site. Hope that helps. > > > -----Original Message----- > From: Kai Schlamp [mailto:kai.schl...@googlemail.com] > Sent: Sunday, March 13, 2011 11:14 PM > To: solr-user@lucene.apache.org > Subject: Different options for autocomplete/autosuggestion > > 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
