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SIGMOD
2007
ACM
170views Database» more  SIGMOD 2007»
14 years 10 months ago
Cardinality estimation using sample views with quality assurance
Accurate cardinality estimation is critically important to high-quality query optimization. It is well known that conventional cardinality estimation based on histograms or simila...
Per-Åke Larson, Wolfgang Lehner, Jingren Zho...
POPL
2000
ACM
14 years 1 months ago
Verifying Secrets and Relative Secrecy
Systems that authenticate a user based on a shared secret (such as a password or PIN) normally allow anyone to query whether the secret is a given value. For example, an ATM machi...
Dennis M. Volpano, Geoffrey Smith
MUE
2007
IEEE
124views Multimedia» more  MUE 2007»
14 years 4 months ago
Music Information Retrieval Using a GA-based Relevance Feedback
Recently, there has been an increased interest in the query reformulation using relevance feedback with evolutionary techniques such as genetic algorithm for multimedia informatio...
Seungmin Rho, Eenjun Hwang, Minkoo Kim
SEBD
2003
159views Database» more  SEBD 2003»
13 years 11 months ago
Spatial Tree Logics to reason about Semistructured Data
The Ambient Logic is a modal logic proposed to describe the structural and computational properties of distributed and mobile computations. The static part of the Ambient Logic is,...
Giovanni Conforti, Giorgio Ghelli
SIGMOD
2009
ACM
111views Database» more  SIGMOD 2009»
14 years 10 months ago
Language-model-based ranking in entity-relation graphs
We propose a language-model-based ranking approach for SPARQLlike queries on entity-relationship graphs. Our ranking model supports exact matching, approximate structure matching,...
Shady Elbassuoni, Maya Ramanath, Gerhard Weikum