change simple concept search to use simple_query_string matches against individual fields so that hit score is comptued as aggregate of field match scores, rather than using the field match's score. This change is necessary since score explanation does not make sense when using a disjunctive max scoring.
change simple concept search to use simple_query_string matches against individual fields so that hit score is comptued as aggregate of field match scores, rather than using the field match's score. This change is necessary since score explanation does not make sense when using a disjunctive max scoring.