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» Deriving Information Requirements from Responsibility Models
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CCS
2007
ACM
15 years 10 months ago
A simple and expressive semantic framework for policy composition in access control
In defining large, complex access control policies, one would like to compose sub-policies, perhaps authored by different organizations, into a single global policy. Existing po...
Glenn Bruns, Daniel S. Dantas, Michael Huth
CIVR
2007
Springer
195views Image Analysis» more  CIVR 2007»
15 years 10 months ago
Towards optimal bag-of-features for object categorization and semantic video retrieval
Bag-of-features (BoF) deriving from local keypoints has recently appeared promising for object and scene classification. Whether BoF can naturally survive the challenges such as ...
Yu-Gang Jiang, Chong-Wah Ngo, Jun Yang 0003
IJCNN
2006
IEEE
15 years 10 months ago
An optimization approach to achieve unsupervised segmentation and binding in a dynamical network
— We present a novel network of oscillatory units, whose behavior is described by the amplitude and phase of oscillations. While building on previous work, the system presented i...
A. Ravishankar Rao, Guillermo A. Cecchi, Charles C...
ISMIR
2001
Springer
208views Music» more  ISMIR 2001»
15 years 9 months ago
The JRing System for Computer-Assisted Musicological Analysis
Among other factors, high complexity and mandatory expert computer knowledge make many music IR and music analysis systems unsuitable for the majority of largely computer-illitera...
Andreas Kornstädt
VLDB
1997
ACM
97views Database» more  VLDB 1997»
15 years 8 months ago
The Complexity of Transformation-Based Join Enumeration
Query optimizers that explore a search space exhaustively using transformation rules usually apply all possible rules on each alternative, and stop when no new information is prod...
Arjan Pellenkoft, César A. Galindo-Legaria,...