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120
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WWW
2003
ACM
16 years 4 months ago
2003
ACM
This paper focuses on the optimization of the navigation through voluminous subsumption hierarchies of topics employed by Portal Catalogs like Netscape Open Directory (ODP). We ad...
134
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AAAI
1998
15 years 5 months ago
1998
We present an approach for optimizing the performance of information agents by materializing useful information . A critical problem with information agents, particularly those ga...
212
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CSFW
2011
IEEE
14 years 3 months ago
2011
IEEE
—This paper explores the idea of knowledge-based security policies, which are used to decide whether to answer queries over secret data based on an estimation of the querier’s ...
120
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ERCIMDL
2009
Springer
15 years 10 months ago
2009
Springer
This paper presents a structure we call XML Wavelet Tree (XWT) to represent any XML document in a compressed and self-indexed form. Therefore, any query or procedure that could be ...
130
Voted
ICALP
1990
Springer
15 years 8 months ago
1990
Springer
We show how (now familiar) hierarchical representations of (convex) polyhedra can be used to answer various separation queries efficiently (in a number of cases, optimally). Our e...