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DASFAA
2010
IEEE
176views Database» more  DASFAA 2010»
13 years 6 months ago
Efficient Database-Driven Evaluation of Security Clearance for Federated Access Control of Dynamic XML Documents
Achieving data security over cooperating web services is becoming a reality, but existing XML access control architectures do not consider this federated service computing. In this...
Erwin Leonardi, Sourav S. Bhowmick, Mizuho Iwaihar...
SIGMOD
2007
ACM
176views Database» more  SIGMOD 2007»
14 years 6 months ago
URank: formulation and efficient evaluation of top-k queries in uncertain databases
Top-k processing in uncertain databases is semantically and computationally different from traditional top-k processing. The interplay between query scores and data uncertainty ma...
Mohamed A. Soliman, Ihab F. Ilyas, Kevin Chen-Chua...
ICDE
2002
IEEE
104views Database» more  ICDE 2002»
14 years 7 months ago
Efficient Evaluation of Queries with Mining Predicates
Modern relational database systems are beginning to support ad hoc queries on mining models. In this paper, we explore novel techniques for optimizing queries that apply mining mo...
Surajit Chaudhuri, Vivek R. Narasayya, Sunita Sara...
PVLDB
2008
81views more  PVLDB 2008»
13 years 5 months ago
On efficiently searching trajectories and archival data for historical similarities
We study the problem of efficiently evaluating similarity queries on histories, where a history is a d-dimensional time
Reza Sherkat, Davood Rafiei
DASFAA
2007
IEEE
141views Database» more  DASFAA 2007»
13 years 10 months ago
An Efficient Index Lattice for XML Query Evaluation
Abstract. We have defined an XML structural index called the Structure Index Tree (SIT), which eliminates duplicate structures arising from the equivalent subtrees in an XML docume...
Wilfred Ng, James Cheng