An XML Keyword Query Algorithm Based On Node Semantic Relevance
BO Jing-yi · Computer Knowledge and Technology · 2009
In general,the existing XML keyword query algorithms only consider the structural relationships among XML nodes and return the subtrees including keyword matching nodes as the query results.The semantic relevance is not fully used,which is the main reason that leads to the semantic irrelevance of the query result.In the paper,the context semantics of query keywords and semantic relevance among XML nodes are defined firstly.Based on the definitions,a new keyword query algorithm which finds the semantically relevant units as query results is proposed.Using the algorithm,the query results do not include semantically irrelevant information and really match user's query intention.The accuracy and efficiency of our algorithm are confirmed by extensive experiments.