Ranking Query Results

PageRank gives a page's “importance”
PR(A) = (1-d) + d (PR(T1)/C(T1)+...+ PR(Tn)/C(Tn))
- d: damping factor
- T1 through Tn are the citations for this page
- C(A): number of outgoing links from page A
To prioritize search results also use IR score
- type-weights: title, anchor, URL, big font, etc.
- count-weights: how many hits of each type
- type-proxy-weights: distance between words

PageRank gives a page's “importance”