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ICDAR
2009
IEEE
15 years 4 months ago
Unsupervised Selection and Discriminative Estimation of Orthogonal Gaussian Mixture Models for Handwritten Digit Recognition
The problem of determining the appropriate number of components is important in finite mixture modeling for pattern classification. This paper considers the application of an unsu...
Xuefeng Chen, Xiabi Liu, Yunde Jia
SACMAT
2009
ACM
15 years 4 months ago
An algebra for fine-grained integration of XACML policies
Collaborative and distributed applications, such as dynamic coalitions and virtualized grid computing, often require integrating access control policies of collaborating parties. ...
Prathima Rao, Dan Lin, Elisa Bertino, Ninghui Li, ...
KDD
2004
ACM
137views Data Mining» more  KDD 2004»
15 years 3 months ago
Mining scale-free networks using geodesic clustering
Many real-world graphs have been shown to be scale-free— vertex degrees follow power law distributions, vertices tend to cluster, and the average length of all shortest paths is...
Andrew Y. Wu, Michael Garland, Jiawei Han
GROUP
2003
ACM
15 years 3 months ago
Communities of action: a cognitive and social approach to the design of CSCW systems
Most current theories about collective cognitive activities in limited groups apply to structurally closed co-operative situations Here we propose to work in the framework of inte...
Manuel Zacklad
VLDB
2002
ACM
165views Database» more  VLDB 2002»
14 years 9 months ago
RTMonitor: Real-Time Data Monitoring Using Mobile Agent Technologies
RTMonitor is a real-time data management system for traffic navigation applications. In our system, mobile vehicles initiate time-constrained navigation requests and RTMonitor cal...
Kam-yiu Lam, Alan Kwan, Krithi Ramamritham