Recall that the Average FV Quality Score (AFvQS) is an aggregated score of the Average FV Similarity
(AFvS), Average FV Neighbourhood Similarity (AFvNS), and the Average FV NGD (AFvNGD) scores.
AFvS, AFvNS, and AFvNGD can be tuned using the α, β, and γ weights. However, because of the way
the different scores are aggregated, i.e., being linear, AFvQS cannot be tuned to fit the observations done
in this experiment. Consequently, AFvQS needs to be revised to better reflect FVs used in search.