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DKE
2008
103views more  DKE 2008»
15 years 6 months ago
The XML Tree Model - toward an XML conceptual schema reversed from XML Schema Definition
XML Schema Definition (XSD) is the logical schemas of an XML model, but there is no standard format for the conceptual schema of an XML model. Therefore, we propose an XML Tree Mo...
Joseph Fong, San Kuen Cheung, Herbert Shiu
IJNSEC
2007
131views more  IJNSEC 2007»
15 years 6 months ago
An Asymmetric Cryptographic Key Assignment Scheme for Access Control in Tree Structural Hierarchies
In a hierarchical structure, a user in a security class has access to information items of another class if and only if the former class is a predecessor of latter. Based upon cry...
Debasis Giri, Parmeshwary Dayal Srivastava
TCS
2008
15 years 6 months ago
A simple transitive signature scheme for directed trees
Transitive signatures allow a signer to authenticate edges in a graph in such a way that anyone, given the public key and two signatures on adjacent edges (i, j) and (j, k), can c...
Gregory Neven
JMLR
2000
134views more  JMLR 2000»
15 years 6 months ago
Learning with Mixtures of Trees
This paper describes the mixtures-of-trees model, a probabilistic model for discrete multidimensional domains. Mixtures-of-trees generalize the probabilistic trees of Chow and Liu...
Marina Meila, Michael I. Jordan
IPL
2010
71views more  IPL 2010»
15 years 5 months ago
New common ancestor problems in trees and directed acyclic graphs
We derive a new generalization of lowest common ancestors (LCAs) in dags, called the lowest single common ancestor (LSCA). We show how to preprocess a static dag in linear time su...
Johannes Fischer, Daniel H. Huson