My requirement is, I want to display the Top Terms with their count for every
field. I am having 10 fields and in Each field Top 3 terms with their count
should be displayed. When User selects any term then the search will be
performed to filter the results.
I could use term vector and enumurate the term freqeuncy and sort it but it may
be time consuming task.
Field_1 Field_2 Field_N
Term_1_1(100) Term_2_1(389) Term_N_1(216)
Term_1_2(78) Term_2_2(134) Term_N_2(156)
Term_1_3(56) Term_2_3(78) Term_N_3(89)
Sample:
-------------
Top users Country PageAccessed
UserA (100) India (1000) /Articles/abc (200)
UserB (100) US(500) /Articles/xyz (200)
UserC (100) Russia(200) /Articles/aaa (100)
When click on particular user, the results should be grouped for that User.
Top users Country PageAccessed
UserA (100) India (100) /Articles/abc (55)
US(50) /Articles/xyz (25)
/Articles/aaa (10)
Regards
Ganesh
----- Original Message -----
From: "Chris Hostetter" <hossman_luc...@fucit.org>
To: "Lucene Users" <java-user@lucene.apache.org>
Sent: Thursday, February 24, 2011 7:29 AM
Subject: [Bulk] Re: Facet search
>
> : This is another indicator that we should really try to extract Solr's
> : capabilities like Faceting into modules! Solr should not be required
> : if you want to use the facteing stuff we already have.
>
> the most basic logic of (field) faceting used by solr is simple TermEnum
> iteration and document set intersection. Any Lucene application can do
> that w/o really refactoring any code out of Solr. it's very straight
> forward.
>
> The real value adds that solr provides are:
>
> * DocSet caching and cache warming which solr can do for you because it
> knows when index changes (because it manages all the writes and reader
> reopening).
> * select alternate facet algorithms based on schema knowledge -- looking
> at field types and value cardinality to determine when FieldCache or
> UnInvertedField would be more efficient then TermEnumeration and DocSets
> * acurate counts when doing distributed searching
>
> This aren't things that seem like they could really be extracted in a very
> reusable manner -- the pre-requisets and scaffolding you'd need to
> setup and use these pieces in a meaningful way outside of solr would
> probably wind up being just like solr.
>
> There are however lots of pieces that oculd be extracted and reused -- but
> those things have allready been started/discussed (DocSets, hooks for
> generic caches that are notified when IndexReaders are reopened, or
> segments are changed, multivalue support in FieldCache, etc...)
>
> : >> I am using Lucene for my project and we have new requirement to present
> : >> data in the form of Analytics. Facet could be used for that but for this
>
> thats kind of a vague requirement -- if you can elaborate a bit on what
> types of info you actaully want to compute/return, there may be a very
> straightforward way to do it.
>
> like i said: the basics of faceting over all terms in a field is *really*
> trivial ... the original implementation in Solr was about 40 lines of
> code...
>
> http://svn.apache.org/viewvc/incubator/solr/trunk/src/java/org/apache/solr/request/SimpleFacets.java?view=markup&pathrev=441175#l163
>
>
> -Hoss
>
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