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    PAKDD
    2010
    ACM
    179views Data Mining» more  PAKDD 2010»
    Answer Diversification for Complex Question Answering on the Web
    14 years 11 months ago
    Answer Diversification for Complex Question Answering on the Web
    Download  www.ischool.drexel.edu
    We present a novel graph ranking model to extract a diverse set of answers for complex questions via random walks over a negative-edge graph. We assign a negative sign to edge weig...
    Palakorn Achananuparp, Xiaohua Hu, Tingting He, Ch...
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    ICDT
    2003
    ACM
    125views Database» more  ICDT 2003»
    XPath Containment in the Presence of Disjunction, DTDs, and Variables
    14 years 11 months ago
    XPath Containment in the Presence of Disjunction, DTDs, and Variables
    Download  xml.coverpages.org
    XPath is a simple language for navigating an XML tree and returning a set of answer nodes. The focus in this paper is on the complexity of the containment problem for various fragm...
    Frank Neven, Thomas Schwentick
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