For more than a decade, the authors have studied the best, worst, and emerging information technology sourcing practices in 543 large and small organizations world-wide. From an initial focus on cost reduction in the early 1990s, the authors found that customers now expect many business...

A 78 organization study in USA, Europe and Australasia throughout 1999-2001 finds a variety of practices in sourcing the development and running of technology and e-businesses in value networks. The paper points to trade-offs in e-sourcing decisions, not least between speed to the net, cost, and...

There have been many claims that the Internet will revolutionise the way organisations do business. Though the Internet is increasingly encroaching on every facet of business life, the evidence for its transformative powers is still weak. However, there is one business sector where it does...

At the beginning of the new century, Information Technologies had become basic and indispensable constituents of the production and preparation processes for all kinds of goods and services and with that are largely influencing both the working and private life of nearly every citizen. This...

The development of real-time traffic models is of paramount importance for the purposes of optimising traffic flow. Inspired by the compositional model (CM) [1] and the METANET model [2], [3], this paper proposes an interval approach for macroscopic traffic modeling. We develop an interval...

We introduce and create a framework for deriving probabilistic models of Information Retrieval. The models are nonparametric models of IR obtained in the language model approach. We derive term-weighting models by measuring the divergence of the actual term distribution from that obtained under...

Simulation is a vital tool in research methods for investigating lifecycle issues in critical application areas, such as scenarios involving trust. Our trust model is premised on the belief that the ability to form and evolve explicit values for trust in other principals in an interaction allows...

An enormous amount of information has been produced about the IT outsourcing phenomenon over the last 20 years, but one has to look to the academic literature for consistent, objective, and reliable research approaches and analyses. Our review finds that, in practice, the academic literature on...

Publishing transaction data containing individuals? activities may risk privacy breaches, so the need for anonymizing such data before their release is increasingly recognized by organizations. Several approaches have been proposed recently to deal with this issue, but they are still inadequate...

In this paper we study a new restriction of the PAC learning framework, in which each label class is handled by an unsupervised learner that aims to fit an appropriate probability distribution to its own data. A hypothesis is derived by choosing, for any unlabeled instance, the label whose...