Sciweavers

2169 search results - page 329 / 434
» Inferencing in Database Semantics
Sort
View
GIS
2008
ACM
16 years 3 months ago
A location aware role and attribute based access control system
In this paper, we follow the role-based access control (RBAC) approach and extend it to provide for the dynamic association of roles with users. In our framework, privileges assoc...
Isabel F. Cruz, Rigel Gjomemo, Benjamin Lin, Mirko...
WWW
2001
ACM
16 years 2 months ago
A unified constraint model for XML
Integrity constraints are an essential part of a modern schema definition language. They are useful for semantic specification, update consistency control, query optimization, inf...
Gabriel M. Kuper, Jérôme Siméo...
MMM
2009
Springer
93views Multimedia» more  MMM 2009»
15 years 11 months ago
SenseCam Image Localisation Using Hierarchical SURF Trees
The SenseCam is a wearable camera that automatically takes photos of the wearer’s activities, generating thousands of images per day. Automatically organising these images for eď...
Ciarán O. Conaire, Michael Blighe, Noel E. ...
ICASSP
2009
IEEE
15 years 8 months ago
Annotating images by harnessing worldwide user-tagged photos
Automatic image tagging is important yet challenging due to the semantic gap and the lack of learning examples to model a tag’s visual diversity. Meanwhile, social user tagging ...
Xirong Li, Cees G. M. Snoek, Marcel Worring
CIKM
2009
Springer
15 years 8 months ago
Text segmentation via topic modeling: an analytical study
In this paper, the task of text segmentation is approached from a topic modeling perspective. We investigate the use of latent Dirichlet allocation (LDA) topic model to segment a ...
Hemant Misra, François Yvon, Joemon M. Jose...