We focus on mixtures of factor analyzers from the perspective of a method for model-based density estimation from high-dimensional data, and hence for the clustering of such data. This approach enables a normal mixture model to be fitted to a sample of n data points of dimension p, where p is...

The success of role-based access control both within the research community and industry is undeniable. One of the main reasons for RBAC's adoption is its ability to reduce administration costs, help eliminate errors, and improve the security of a system. Before these advantages can be observed,...

In this information age, data and knowledge extracted by data mining techniques represent a key asset driving research, innovation, and policy-making activities. Many agencies and organizations have recognized the need of accelerating such trends and are therefore willing to release the data...