Filtering Clicks Click deviation CD(d, p) for a result d in position p CD(d,p)=O(d, p)-E(p o(d,p: observed click frequency for a document in a rank position p over all instances of a given query Elp expected click frequency at rank p averaged across a∥ queries 17/NFiltering Clicks • Click deviation CD(d, p) for a result d in position p: O(d,p): observed click frequency for a document in a rank position p over all instances of a given query E(p): expected click frequency at rank p averaged across all queries 17/N