# Facet query sorted by tf\*idf **URL:** \ **Category:** Elasticsearch\ **Created:** [October 25, 2012, 5:48am UTC](https://discuss.elastic.co/t/facet-query-sorted-by-tf-idf/9466 "2012-10-25T05:48:55Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Chris\_Rode1](https://avatars.discourse-cdn.com/v4/letter/c/65b543/32.png) [@Chris\_Rode1](https://discuss.elastic.co/u/Chris_Rode1)\ **Post date:** [October 25, 2012, 5:48am UTC](https://discuss.elastic.co/t/facet-query-sorted-by-tf-idf/9466/1 "2012-10-25T05:48:55Z")
Hi All We need a way to get all terms in a document set sorted by tf\*idf. I have been looking at ways of getting this data in the most efficient way possible and I thought I would simply post here to see if elasticsearch allows you to do something like that Essentially it would be a facet search sorted by tf\*idf descending, so I could get the highest scoring terms first Else is there a way to get the idf score for a term from ElasticSearch so that I can calculate the tf\*idf score myself? Perhaps using [http://www.elasticsearch.org/guide/reference/api/explain.html](http://www.elasticsearch.org/guide/reference/api/explain.html)? Cheers for your help Chris -- ---
**Author:** ![Ferdy\_Galema](https://avatars.discourse-cdn.com/v4/letter/f/278dde/32.png) [@Ferdy\_Galema](https://discuss.elastic.co/u/Ferdy_Galema)\ **Post date:** [November 15, 2012, 7:03am UTC](https://discuss.elastic.co/t/facet-query-sorted-by-tf-idf/9466/2 "2012-11-15T07:03:52Z")
Hi Chris, Did you by any chance have any progress on this? This is exactly what I need too. Cheers. On Thursday, October 25, 2012 7:48:55 AM UTC+2, Chris Rode wrote: > Hi All > > We need a way to get all terms in a document set sorted by tf\*idf. I have > been looking at ways of getting this data in the most efficient way > possible and I thought I would simply post here to see if elasticsearch > allows you to do something like that > > Essentially it would be a facet search sorted by tf\*idf descending, so I > could get the highest scoring terms first > > Else is there a way to get the idf score for a term from Elasticsearch so > that I can calculate the tf\*idf score myself? Perhaps using > [Elasticsearch Platform — Find real-time answers at scale | Elastic](http://www.elasticsearch.org/guide/reference/api/explain.html)? > > Cheers for your help > > Chris -- ---
**Author:** ![Chris\_Male](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/chris_male/32/2607_2.png) [@Chris\_Male](https://discuss.elastic.co/u/Chris_Male)\ **Post date:** [November 15, 2012, 9:28pm UTC](https://discuss.elastic.co/t/facet-query-sorted-by-tf-idf/9466/3 "2012-11-15T21:28:52Z")
I'm not the original Chris but I do have some thoughts on the issue, The original need sounds like it's more related to term vectors than to facets, but Elasticsearch does not expose term vectors out-of-box. If you felt comfortable writing some Java code you could write your own plugin which accessed them and returned them. Alternatively if you want to pursue the facet approach, you'll still need to write a plugin (but a less complex one) which introduces a custom FacetCollector and computes the information for each term. Both approaches require using the Lucene API a little but are very doable. On Thursday, November 15, 2012 8:03:52 PM UTC+13, Ferdy Galema wrote: > Hi Chris, > > Did you by any chance have any progress on this? This is exactly what I > need too. > > Cheers. > > On Thursday, October 25, 2012 7:48:55 AM UTC+2, Chris Rode wrote: > > > Hi All > > > > We need a way to get all terms in a document set sorted by tf\*idf. I have > > been looking at ways of getting this data in the most efficient way > > possible and I thought I would simply post here to see if elasticsearch > > allows you to do something like that > > > > Essentially it would be a facet search sorted by tf\*idf descending, so I > > could get the highest scoring terms first > > > > Else is there a way to get the idf score for a term from Elasticsearch so > > that I can calculate the tf\*idf score myself? Perhaps using > > [Elasticsearch Platform — Find real-time answers at scale | Elastic](http://www.elasticsearch.org/guide/reference/api/explain.html)? > > > > Cheers for your help > > > > Chris -- ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 3:04am UTC](https://discuss.elastic.co/t/facet-query-sorted-by-tf-idf/9466/4 "2017-07-06T03:04:04Z")