Answering the need behind the query
: Context
Context determination
-
spatial (user location/target location)
-
query stream (previous queries)
-
personal (user profile)
-
explicit (user choice of a vertical search, )
-
implicit (use Google from France, use google.fr)
Context use
-
Result restriction
-
Eliminate inappropriate results
-
Ranking modulation
-
Use a
rough
generic ranking, but personalise later