Christoph Büscher ebe13100df Add hits section to response for each ranking evaluation query
This change adds a `hits` section to the response part for each ranking
evaluation query, containing a list of documents (index/type/id) and ratings (if
the document was rated in the request). This section can be used to better
understand the calculation of the ranking quality of this particular query, but
it can also be used to identify the "unknown" (that is unrated) documents that
were part of the seach hits, for example because a UI later wants to present
those documents to the user to get a rating for them.

If the user specifies a set of field names using a parameter called
`summary_fields` in the request, those fields are also included as part of the
response in addition to "_index", "_type", "_id".
2016-10-14 17:14:05 +02:00
..
2016-08-24 17:26:28 -04:00
2016-09-21 14:45:28 +02:00