Fourth and most importantly, for most combinations of parameter settings and on both query sets, the runs that take advantage of query logs (R p , R s , R u ) produce the highest scores.
when I-per-Q is set to 10 and C-per-I to 20, run R u identifies the original query as an exact match among the top three to four class labels returned (score 0.278); and as a partial match among the top one to two class labels returned (score 0.636), as an average over the Q e set.