I don't think this field collapsing can simply solve my problem after second
thought.
As I mentioned, user only type in a search phrase, and click on search.
Underlying that, the application logic is going to compose search query
against multiple fields (title_name, actors, directors, ...) by the search
phrase/term.
Therefore, search result can match search term with any of the fields above.
However, for all results due to actor name match, i want to make a group
which only list the first two actors. for that group, i want to put it to
the right spot of the result based on the relevancy score of the best actor
match.
For example, if i search a keyword "Tom" (term match as well fuzzy match).
there are matching result based on video title name as well as actor name
result 1: <-- title match
score: 1.0
title_name: tom's story
actor: jamie lee
result 2: <-- title match
score: 0.95
title_name: tom green's store
actor: joanne anderson
result 3: <-- actor match
actor 2: tommy jackson -- score: 0.5
actor 1: tim robin -- score: 0.4
See all actors match "Tom"
result 4: <-- title match
score: 0.333
title_name: atom theory
actor: kevin sheen
in this case, field collapsing can only achieve this: out of search result,
It will list out all actors as long as there is title or actor match. For
example:
Assume only show top 2 result in each group
group value: Anglelina Jolie
numFound:13
id:1,
title_name:tom's story
id:2,
title_name:tom green's store
group value: tommy jackson
numFound:1
id: 201,
title_name: ...
group value: kevin sheen
numFound:1
id: 30,
title_name: atom theory
<-- even if Angelina Jolie not in the result because of actor name match.
but because her movie title matching "tom" with highest relevance. she
will still be number 1 group. This is different than what i expected.
--
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