Thanks for your replies. I can't apply index-time boost because I don't know the term frequencies in advance. Additionally, new documents come in every few minutes which make maintaining term frequencies outside Solr a difficult task.
Facet prefix would probably help in this case. I thought there would be a better way to achieve my goal without having to do a facet search. @Andrew: still at Westfield? Thanks, Cuong On Fri, Jan 20, 2012 at 6:43 PM, Andrew Harvey <and...@mootpointer.com>wrote: > With Solr 4.0 you could use relevance functions to give a query time boost > if you don't have the information at index time. > > Alternatively you could do term facet based autocomplete which would mean > you could sort by count rather than any other input. > > Andrew > > Sent on the run. > > On 20/01/2012, at 15:45, Otis Gospodnetic <otis_gospodne...@yahoo.com> > wrote: > > > Cuong, > > > > If when you are indexing your AC suggestions you know "Java Developer" > appears twice in the index, why not give it appropriate index-time boost? > Wouldn't that work for you? > > > > > > Otis > > > > ---- > > Performance Monitoring SaaS for Solr - > http://sematext.com/spm/solr-performance-monitoring/index.html > > > > > > > > ----- Original Message ----- > >> From: Cuong Hoang <climbingr...@gmail.com> > >> To: solr-user@lucene.apache.org > >> Cc: > >> Sent: Thursday, January 19, 2012 12:01 AM > >> Subject: Ngram autocompleter and term frequency boosting > >> > >> Hi guys, > >> > >> I'm trying to build a Ngram-based autocompleter that takes term > frequency > >> into account. > >> > >> Let's say I have the following documents: > >> > >> D1: title => "Java Developer" > >> D2: title => "Java Programmer" > >> D3: title => "Java Developer" > >> > >> When the user types in "Java", I want to display > >> > >> 1. "Java Developer" > >> 2. "Java Programmer" > >> > >> Basically "Java Developer" ranks first because it appears twice in the > >> index while "Java Programmer" only appears once. Is it possible? > >> > >> I'm using the following config for "title" field: > >> > >> <fieldType name="text_pre" class="solr.TextField" > >> omitNorms="false"> > >> <analyzer type="index"> > >> <tokenizer class="solr.KeywordTokenizerFactory"/> > >> <filter class="solr.LowerCaseFilterFactory"/> > >> <filter class="solr.EdgeNGramFilterFactory" > >> minGramSize="1" > >> maxGramSize="25" side="front"/> > >> </analyzer> > >> <analyzer type="query"> > >> <tokenizer class="solr.KeywordTokenizerFactory"/> > >> <filter class="solr.LowerCaseFilterFactory"/> > >> </analyzer> > >> </fieldType> > >> > >> Thanks > >> >
