Michael,
I assume you were trying his out in the SolrAdmin Query tab? With the
debug=true flag set? What do you see in the debug output about scoring?
You might end up using a Boost Function to get the desired ranking.
Google "solr multiple boost functions".
cheers -- Rick
On 2017-05-29 03:43 AM, Moritz Michael wrote:
Hello,
I'm new to this list and having a question regarding nested documents with
scoring through eDisMax.
We do have an index of e-books that contains the metadata of the e-book and
each page as a single document:
- Book 1
- Page 1
- Page 2
- Page 3
- ...
- Page n
The parent document contain a field is_parent:true, an id and doc_id. For
parent documents, the id is the same as doc_id, for the child documents the
id is {doc_id}_{page_number}. The doc_id is always the same for the parent
and it's children (that's how we know which child belongs to which parent).
So now the challenge is to offer a fulltext search that uses eDisMax to
find the best result for a searchterm from the parents metadata and the
childrens content and combines them to a score value.
The current query looks like this:
'fl' =>
'id,doc_id,main_type,title,subtitle,publishing_date,page_number,author,score',
'defType' => 'edismax',
'stopwords' => 'true',
'mm' => '1',
'qf' => 'id^10.0 title^50.0 subtitle^40.0 author^20.0',
'q' => 'TEST _query_:"{!parent which=is_parent:true
score=Max}{!dismax qf='content' v='TEST'}"^20',
'sort' => 'score DESC'
But it seems the score of the _query_ is not added to the score of the main
query. But, if I do this without the "TEST" term in the beginning: 'q'
=> '_query_:"{!parent
which=is_parent:true score=Max}{!dismax qf='content' v='TEST'}"^20', I get
a score value - so somehow it seems the score is there but I'm not sure how
to use it properly.
Is there another option to do a nested search with combined scores?
Before the questions comes up why we did not use the nested documents
feature of SOLR: we created this index years ago using SOLR 4.6 and this
feature didn't exist at this time. We now used the IndexUpdater Tools of
SOLR 5 and SOLR 6 to update our index to SOLR 6.
We weren't able to create our fulltext search in the past, because SOLR
BlockJoin feature did not support score calculation at all, but that seemed
to be changed in SOLR 5 so we want to give it another try. Every hint in
the right direction would be helpfull.
Thank you!
Moritz
