The most important component w.r.t. the FV
quality is the query expansion component (Step 3).
The parent entities are the most important
neighbouring entities both for query expansion
(Step 3) and when identifying the most prominent
candidate cluster (Step 7). Further, the
neighbouring entities used to expand the query
yields better FV quality than usage of scope
keywords. A high number of search results
minimises the difference between the search
engines and probably the change in ranking they
provide over time.