【文件属性】：
文件名称：Relevance Ranking
文件大小：442KB
文件格式：PDF
更新时间：2014-06-15 17:24:24
XML ；搜索
Inspired by the great success of information retrieval
(IR) style keyword search on the web, keyword search on
XML has emerged recently. The difference between text database
and XML database results in three new challenges: (1) Identify
the user search intention, i.e. identify the XML node types that
user wants to search for and search via. (2) Resolve keyword
ambiguity problems: a keyword can appear as both a tag name
and a text value of some node; a keyword can appear as the text
values of different XML node types and carry different meanings.
(3) As the search results are sub-trees of the XML document,
new scoring function is needed to estimate its relevance to a given
query. However, existing methods cannot resolve these challenges,
thus return low result quality in term of query relevance.