Watson retrieve and rank: document relevance score

Question

How do I call Solr to return relevance scores in the result? I want to have a Solr document that includes the confidence that Solr uses internally for ranking, but I don't want to have to make a separate call to the ranker?

I tried to add the "confidence" field to the list of fields to return, but it doesn't have any data.

query.set("fl","id,title,fileName,contentHtml,searchText,sourceDocId,confidence");
query.set("debugQuery" ,true);

Answer 1

Use score in fl, which adds relevancy score value calculated for each document in the resultset.

query.set("fl","id,score,title,fileName,contentHtml,searchText,sourceDocId,confidence");