This article proposes a new technique for Privacy Preserving Collaborative Filtering (PPCF) based on microaggregation, which provides accurate recommendations estimated from perturbed data whilst guaranteeing user k-anonymity. ...

Pervasive computing represents a vision of networked computers being distributed throughout our everyday environment in order to transparently provide services to people. The use of sensors enables the deployment of so-called ...

Java is increasingly used to develop large server applications. In order to provide powerful platforms for such applications a number of projects have proposed Java Virtual Machines (JVMs) that are based on network ...

South Africa has one of the most serious human immunodeficiency virus (HIV) / and tuberculosis (TB) epidemics in the world, with high incidence, prevalence and co-infection rates. Information is at the heart of managing ...

Many Internet security mechanisms depend on the use of cryptographic algorithms for various forms of authentication and confidentiality. Even when well-known and standardized cryptographic algorithms are used in well-known ...

The complexity of current computing networks and the required fluidity of their operation requires autonomy to be central to the design and implementation of a managed overlay network. This paper presents a system in which ...

Case-Based Reasoning (CBR) has emerged from research in cognitive psychology as a model of human memory and remembering. It has been embraced by researchers of AI applications as a methodology that avoids some of the ...

A major advantage in using a case-based approach to developing knowledge-based systems is that it can be applied to problems where a strong domain theory may be difficult to determine. However the development of case-based ...

Users of the web are increasingly interested in tracking the appearance of new postings rather than locating existing knowledge. Coupled with this is the emergence of the Web 2.0 movement (where everyone effectively ...