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ranking function for XML document streams


Recently I've interested in quering XML document streams. They can be
queried in keyword- based manner (non-structural queries), as the
authors of the article "Semantic Search over XML Document
Streams" [1]
have shown.

Do you know any ranking function to ranking triples returned during
search ? I'm not a specialist in this field, but this would require
ranking function based on local context of a result, as a stream have
different natured then indexed documents. For example for indexed XML
documents authors of XRank system proposed a function based on
number of all elements in the document).

What do you think about this ?


1. Semantic Search over XML Document Streams, Z. Vagena, M M. Moro,
DataX. 2008
2 L. Guo, F. Shao, C. Botev, and J. Shanmugasundaram. XRANK: Ranked
keyword search over XML documents. In ACM SIGMOD, 2003.

Jun 27 '08 #1
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