Keyword Search in Databases- P18 doc
Keyword Search in Databases- P24 doc
... ={k 1 ,k 2 , , k l }, a Join Keyword Tree (JKT ) is a tree that satisfies the following conditions. • Each node in the tree contains at least one keyword. • The tree contains all the keywords (total), ... w 1 , w 2 , , w 5 . For edge (w 1 ,w 5 ), the two keywords are contained in a certain tuple in database D, so we add weight 0. There also exists a joining sequence of length 2 that...
Ngày tải lên: 06/07/2014, 00:20
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