26. Computing the Expert Score(1/2) S 0 :包含 k 個 ( 所有 )keywords 的 Key Phrase 的總值 S 1 :包含 k-1 個 keywords 的 Key Phrase 的總值 S 2 :包含 k-2 個 keywords 的 Key Phrase 的總值 S i = SUM (key phrases p with k-i query terms) LevelScore(p) * FullnessFactor(p,q) LevelScore : 16 of title, 6 of heading, 1 of anchor m is the number of terms in p which are not in q If m <= 2, FullnessFactor(p,q) = 1 If m > 2, FullnessFactor(p,q) = 1 – (m-2) / plen Query: A B S 0 = 16*1 S 1 = 16*1 + 6*1 + 16*1 S 2 = 0 Title: A B C H1: A
27. Computing the Expert Score(2/2) S 0 :包含 k 個 ( 所有 )keywords 的 Key Phrase 的總值 S 1 :包含 k-1 個 keywords 的 Key Phrase 的總值 S 2 :包含 k-2 個 keywords 的 Key Phrase 的總值 Expert_Score = ( 2 32 * S 0 ) + ( 2 16 * S 1 ) + S 2
28.
29. Computing the Target Score(1/2) occ(w,T) is the number of distinct key phrases in E that contain w and qualify the edge(E,T) If occ(w,T) is 0 for any query keyword then the Edge_Score(E,T) = 0 Otherwise, Edge_Score(E,T) = Expert_Score(E) * SUM (query keywords w) occ(w,T) T E edge
30. Computing the Target Score(2/2) Target_Score = SUM ( non-affiliated E) Edge_Score(E,T) T E 1 E 2 E 3 E2 and E3 are affiliated, and ES(E 2 ,T) > ES(E 3 ,T)