The "score_mode" setting determines how the scores of the various child docs are attributed to the parent doc which is the final scored element. See http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/query-dsl-nested-query.html#query-dsl-nested-query
You can for example choose to take the average, max or sum of all the child documents that match your nested query and reward the parent doc with that value On Tuesday, October 21, 2014 9:56:51 AM UTC+1, [email protected] wrote: > > Hello, > I am having a problem understanding how scoring of nested documents works. > I have found other people with similar questions which have remained > unanswered: > > > http://stackoverflow.com/questions/25619632/elasticsearch-how-is-the-score-for-nested-queries-computed > > > http://stackoverflow.com/questions/26263562/elasticsearch-boost-score-with-nested-query > > The relevant section of my current mapping (with nested parts) is: > mappings: { > > person: { > properties: { > city: { > type: nested > properties: { > visityear: { > type: integer > } > name: { > type: string > } > } > } > } > } > > } > > If I have three people who have visited different numbers of cities and I > search for a common city they have all visited I get different score > values. The person who visited the greatest number of cities is ranked > first, with the person who visited only one city getting a score of 1 > (currently ranked lowest). The output of the explanation is that hthe score > is based on 'child doc range from 0 to x'. My question is how do TF, IDF > and Field Norm work for nested documents when the score is being > calculated? > > Many thanks, > Barry > -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/071b29f4-2684-4239-bbae-5395d6bbc13c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
